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-
- Inventor(s):
- Gaetano Francis D'Alelio
- Patent Number:
- US 3890274 B2
- Description:
Phthalonitrile-terminated aromatic polyimides and polyimide-phthalocyanines are provided. The phthalonitrile-terminated polyimides are prepared by reacting an anhydride end-capped, aromatic polyimide with at least two moles of a dicyano aromatic monoamine to give a polyimide of the structural formula: ##SPC1## Wherein Ar is a divalent aromatic organic radical, Ar’ is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each …
- Date Issued:
- 1975-06-17
- Record Visibility:
- Public
- Title
- Phthalonitrile-terminated aromatic polyimides
- Description
- Phthalonitrile-terminated aromatic polyimides and polyimide-phthalocyanines are provided. The phthalonitrile-terminated polyimides are prepared by reacting an anhydride end-capped, aromatic polyimide with at least two moles of a dicyano aromatic monoamine to give a polyimide of the structural formula: ##SPC1## Wherein Ar is a divalent aromatic organic radical, Ar' is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar' radical, R' is an aromatic organic radical, the two cyano groups being ortho in the aromatic radical and n is a positive integer of at least 1. The phthalonitrile-terminated polyimides may be chain-extended to higher molecular weight, infusible, insoluble polymers by heating at about 180.degree.C. to about 300.degree.C., or by reaction with polyvalent metals, such as copper, iron, magnesium, etc. or salts of such metals to yield the polyimidemetallo phthalocyanines. The materials described herein are useful as high temperature resistant coatings, molded articles and laminated structures.
- Creator
- Gaetano Francis D'Alelio
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Steven Ruggiero, Carol Tanner
- Patent Number:
- US 8456635 B2
- Description:
Example methods and apparatus for obtaining suspended particle information are disclosed. A disclosed example method includes emitting light from a light source, dividing the light source into a first path and a second path, and directing the first path to a first container comprising a plurality of particles in a suspension material. The example method also includes directing the second path to a second container containing a suspension material devoid of particles, retrieving a first transm…
- Date Issued:
- 2013-06-04
- Record Visibility:
- Public
- Title
- Methods and apparatus to obtain suspended particle information
- Description
- Example methods and apparatus for obtaining suspended particle information are disclosed. A disclosed example method includes emitting light from a light source, dividing the light source into a first path and a second path, and directing the first path to a first container comprising a plurality of particles in a suspension material. The example method also includes directing the second path to a second container containing a suspension material devoid of particles, retrieving a first transmission value of the first path through the first container, and retrieving a second transmission value of the second path through the second container. The example method further includes directing the first and second paths to the second and first containers, respectively, retrieving a third transmission value of the first path through the second container, retrieving a fourth transmission value of the second path through the first container, and calculating a ratio of the first and second transmission values to the third and fourth transmission values to determine an indication of transmissivity for a given wavelength.
- Creator
- Steven Ruggiero, Carol Tanner
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Gaetano Francis D'Alelio
- Patent Number:
- US 4026904 B2
- Description:
Aromatic epoxy-terminated aromatic polyimides and processes for their preparation are provided. The epoxidized polyimides are prepared by epoxidizing an olefinically unsaturated aromatic imide of the formula: ##STR1## WHEREIN Ar is a divalent aromatic organic radical, Ar’ is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar’ radical, R’…
- Date Issued:
- 1977-05-31
- Record Visibility:
- Public
- Title
- Aromatic epoxy-terminated polyimides
- Description
- Aromatic epoxy-terminated aromatic polyimides and processes for their preparation are provided. The epoxidized polyimides are prepared by epoxidizing an olefinically unsaturated aromatic imide of the formula: ##STR1## WHEREIN Ar is a divalent aromatic organic radical, Ar' is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar' radical, R' is a divalent aromatic hydrocarbon radical, and n is a positive integer of at least 1. Preferably, the starting aromatic imide is a styrene-terminated aromatic imide wherein n is at least 4 which is epoxidized with a per-acid.
- Creator
- Gaetano Francis D'Alelio
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Marvin J. Miller, Matthew A. Williams
- Patent Number:
- US 5106968 B2
- Description:
1-Carbapenam-2-one-3-carboxylic acid and 1-carba-3-hydroxy-3-cephem-4-carboxylic acid and esters thereof are provided by a process comprising a rhodium C.sub.2 -C.sub.10 carboxylate catalyzed cyclization of an ester of a 4-(1-alkoxy- or 1-substituted alkoxy)-2-oxo-4-azetidinyl)-.beta.-ketobutyric acid and an ester of a 5-(1-alkoxy- or 1-substituted alkoxy-2-oxo-4-azetidinyl)-.alpha.-diazo-.beta.-ketovaleric acid respectively. The process is carried out in an inert organic solvent at a tempera…
- Date Issued:
- 1992-04-21
- Record Visibility:
- Public
- Title
- Process for bicyclic .beta.-lactams diazo-.beta.-keto-butyrate-intermediates for bicyclic .beta.-lactams
- Description
- 1-Carbapenam-2-one-3-carboxylic acid and 1-carba-3-hydroxy-3-cephem-4-carboxylic acid and esters thereof are provided by a process comprising a rhodium C.sub.2 -C.sub.10 carboxylate catalyzed cyclization of an ester of a 4-(1-alkoxy- or 1-substituted alkoxy)-2-oxo-4-azetidinyl)-.beta.-ketobutyric acid and an ester of a 5-(1-alkoxy- or 1-substituted alkoxy-2-oxo-4-azetidinyl)-.alpha.-diazo-.beta.-ketovaleric acid respectively. The process is carried out in an inert organic solvent at a temperature between about 15.degree. C. and about 85.degree. C. The 1-carba bicyclic .beta.-lactams are intermediates for preparing antibiotics.
- Creator
- Marvin J. Miller, Matthew A. Williams
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Marvin J. Miller, Garrett C. Moraski
- Patent Number:
- US 8362268 B2
- Description:
Embodiments herein provide compounds and methods of making and using such compounds for prevention and treatment of multidrug resistant bacteria. In particular, embodiments are directed to anti-bacterial agents from benzo[d]heterocyclic scaffolds for prevention and treatment of multidrug resistant bacteria.
- Date Issued:
- 2013-01-29
- Record Visibility:
- Public
- Title
- Anti-bacterial agents from benzo[d]heterocyclic scaffolds for prevention and treatment of multidrug resistant bacteria
- Description
- Embodiments herein provide compounds and methods of making and using such compounds for prevention and treatment of multidrug resistant bacteria. In particular, embodiments are directed to anti-bacterial agents from benzo[d]heterocyclic scaffolds for prevention and treatment of multidrug resistant bacteria.
- Creator
- Marvin J. Miller, Garrett C. Moraski
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Philip C. Trexler
- Patent Number:
- US 3051163 B2
- Description:
This invention relates to improvements in isolating devices, and more particularly to a device providing an enclosure for use to confine contamination while experiments and tests involving contamination of test specimens are being made, or to exclude contamination from a space within which tests and experiments are conducted. Contamination, as herein mentioned, may be biological or radiological or chemical.
- Date Issued:
- 1962-08-28
- Record Visibility:
- Public
- Title
- Isolating device
- Description
- This invention relates to improvements in isolating devices, and more particularly to a device providing an enclosure for use to confine contamination while experiments and tests involving contamination of test specimens are being made, or to exclude contamination from a space within which tests and experiments are conducted. Contamination, as herein mentioned, may be biological or radiological or chemical.
- Creator
- Philip C. Trexler
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Philip C. Trexler
- Patent Number:
- US 2786464 B2
- Description:
This invention relates to improvements in biological apparatus, and more particularly to apparatus of the character illustrated in my Patent No. 2,705,489, dated April 5, 1955.
- Date Issued:
- 1957-03-26
- Record Visibility:
- Public
- Title
- Biological apparatus
- Description
- This invention relates to improvements in biological apparatus, and more particularly to apparatus of the character illustrated in my Patent No. 2,705,489, dated April 5, 1955.
- Creator
- Philip C. Trexler
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Gaetano Francis D'Alelio
- Patent Number:
- US 3562218 B2
- Description:
The copolymers disclosed herein are of acetylenic acrylates and methacrylates having the formula CH2=C®C)) -Z CECH wherein R represents hydrogen or methyl and Z represents a divalent hydrocarbon radical of at least 2 carbon atoms. Polymerization of the acetylenic acrylates and methacrylates in free radical polymerizations generally result in crosslinked or gelled products since the free radicals will activate polymerization through the acetylenic as well as through the acrylic unsaturation….
- Date Issued:
- 1971-02-09
- Record Visibility:
- Public
- Title
- Copolymers of Acetylenic Acrylates and Methacrylates
- Description
- The copolymers disclosed herein are of acetylenic acrylates and methacrylates having the formula CH2=C(R)C)) -Z CECH wherein R represents hydrogen or methyl and Z represents a divalent hydrocarbon radical of at least 2 carbon atoms. Polymerization of the acetylenic acrylates and methacrylates in free radical polymerizations generally result in crosslinked or gelled products since the free radicals will activate polymerization through the acetylenic as well as through the acrylic unsaturation. Therefore the copolymers are advantage ously prepared by anionic polymerization. The comonomers are those which are copolymerizable with acrylates and methacrylates in anionic polymerizations. Typical comonomers are styrene, its homologs and derivatives, monounsaturated acrylates and methacrylates, acrylonitrile, vinyl esters, vinyl chloride, vinylidene chloride, monoalphaole?ns, etc. The copolymers are particularly valuable for post-treatment and postreactions, such as bromination, decaboronation, thermal and radical cross linking, Mannich reaction with an aldehyde and ammonia or a mono- or di-substituted amine1 or reactions with niltrile oxides, aldehydes, ketones, epoxides, sodamide, etc. The copolymers can be tailored to give ultimate proper ties according to the type and the proportion of comonomers and the proportion of acetylenic groups as well as the type of postreactant or post-treatment.
- Creator
- Gaetano Francis D'Alelio
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Marvin J. Miller
- Patent Number:
- US 4992544 B2
- Description:
Monocyclic .beta.-lactam compounds represented by the formula ##STR1## wherein R.sub.1 is H, NH.sub.2, acylamino, C.sub.1 -C.sub.4 alkyl, etc.; R.sub.2 is e.g. C.sub.1 -C.sub.4 alkyl, hydroxyalkyl, aminoalkyl, carboxy, esterified carboxy, esterified carboxyalkyl, or carboxyalkyl; and R.sub.3 is hydrogen, benzyl, substituted benzyl, pivaloyl, –SO.sub.3 M, or –P(C.dbd.O)(OM’)2; are obtained by the cyclization of an O-substituted hydroxamate of a .beta.-substituted alkylcarboxylic acid. Fo…
- Date Issued:
- 1991-02-12
- Record Visibility:
- Public
- Title
- Monocyclic beta-lactams and process for the preparation thereof
- Description
- Monocyclic .beta.-lactam compounds represented by the formula ##STR1## wherein R.sub.1 is H, NH.sub.2, acylamino, C.sub.1 -C.sub.4 alkyl, etc.; R.sub.2 is e.g. C.sub.1 -C.sub.4 alkyl, hydroxyalkyl, aminoalkyl, carboxy, esterified carboxy, esterified carboxyalkyl, or carboxyalkyl; and R.sub.3 is hydrogen, benzyl, substituted benzyl, pivaloyl, --SO.sub.3 M, or --P(C.dbd.O)(OM')2; are obtained by the cyclization of an O-substituted hydroxamate of a .beta.-substituted alkylcarboxylic acid. For example, .alpha.-ethylmalic acid monobenzyl ester is reacted with O-benzylhydroxylamine to form the O-benzylhydroxamate of the free carboxy group, and the hydroxamate is cyclized with diethyl diazodicarboxylate and triphenylphosphine to form the .beta.-lactam of the above formula wherein R.sub.1 is ethyl, R.sub.2 is benzyloxycarbonyl and R.sub.3 is benzyl. The .beta.-lactam compounds are useful intermediates for preparing .beta.-lactamase inhibitors and monocyclic .beta.-lactam antibiotics and, when R.sub.3 is --SO.sub.3 M or --P(C.dbd.O)(OM')2 the compounds and salts thereof are antibacterial agents.
- Creator
- Marvin J. Miller
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Eduardo E. Wolf
- Patent Number:
- US 5688474 B2
- Description:
A method of microfabricating a matrix of evenly distributed catalytic articles, with the matrix then being used to treat reactants in a stream of gases. The matrix is created by depositing areas of conductive material on a nonconductive base wafer or substrate, and then depositing catalyst particles in electrical communication with the conductive material so that a series of localized electrical fields can be created upon the introduction of a power source. A dielectric material surrounding t…
- Date Issued:
- 1997-11-18
- Record Visibility:
- Public
- Title
- Device for treating gases using microfabricated matrix of catalyst
- Description
- A method of microfabricating a matrix of evenly distributed catalytic articles, with the matrix then being used to treat reactants in a stream of gases. The matrix is created by depositing areas of conductive material on a nonconductive base wafer or substrate, and then depositing catalyst particles in electrical communication with the conductive material so that a series of localized electrical fields can be created upon the introduction of a power source. A dielectric material surrounding the catalyst particles can be altered by increasing the applied voltage, thereby increasing the strength of the electrical field. A device so constructed is placed in a stream of gases, and the localized electrical fields alter the selectivity and the reactivity of the reactants in the stream of gases.
- Creator
- Eduardo E. Wolf
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Gaetano Francis D'Alelio
- Patent Number:
- US 4060515 B2
- Description:
Aromatic polyimides with nitrile end groups are chain-extended (molecular weight increased) by polymerization using Lewis acid salts as catalyst. Molecular weights are increased with little or no by-product formation. These polyimides can be shaped and formed prior to the polymerization. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and nitrile compounds such as aminobenzyl cyanide and aminobenzonitrile.
- Date Issued:
- 1977-11-29
- Record Visibility:
- Public
- Title
- Chain-extending nitrile end-capped polyimides
- Description
- Aromatic polyimides with nitrile end groups are chain-extended (molecular weight increased) by polymerization using Lewis acid salts as catalyst. Molecular weights are increased with little or no by-product formation. These polyimides can be shaped and formed prior to the polymerization. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and nitrile compounds such as aminobenzyl cyanide and aminobenzonitrile.
- Creator
- Gaetano Francis D'Alelio
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Steven R. Schmid
- Patent Number:
- US 8323349 B2
- Description:
A bearing surface having increased wear resistance. Generally, certain aspects of the present invention are directed to an implant design based on concepts of unidirectional load application and the use of engineered surfaces to increase the amount of lubricant at the bearing surface, to thereby reduce wear of the bearing surface. Surfaces of certain bearing surface embodiments are fabricated to maximize lubricant retention, encourage lubricant entrainment, and/or restrict lubricant escape fr…
- Date Issued:
- 2012-12-04
- Record Visibility:
- Public
- Title
- Textured surfaces for orthopedic implants
- Description
- A bearing surface having increased wear resistance. Generally, certain aspects of the present invention are directed to an implant design based on concepts of unidirectional load application and the use of engineered surfaces to increase the amount of lubricant at the bearing surface, to thereby reduce wear of the bearing surface. Surfaces of certain bearing surface embodiments are fabricated to maximize lubricant retention, encourage lubricant entrainment, and/or restrict lubricant escape from the bearing surface. Preferably, when used in orthopedic applications, such bearing surfaces are optimized based on the unique characteristics of human biomechanical loading.
- Creator
- Steven R. Schmid
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent