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  • Inventor(s):
    James J. Carberry, Charles Benjamin Alcock
    Patent Number:
    US 5286698 B2
    Description:

    Solid oxide solutions of the formula La.sub.1-x Sr.sub.x CrO.sub.3-.differential. have been found to exhibit surprisingly high specific activity as catalysts for oxidation and hydrogenation reactions. The oxide solutions can be utilized in particulate form or applied as films to the surfaces of refractory substrates. The oxide solution catalysts are expected to be a viable alternative to the noble metal catalysts now used commercially for treatment of combustion chamber exhaust gases to reduc…

    Date Issued:
    1994-02-15
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller
    Patent Number:
    US 4595532 B2
    Description:

    N-Mono or N-disubstituted methyl-2-azetidinones are provided via cyclization of .beta.-hydroxy or .beta.-halo substituted acid sec-amides wherein the amide nitrogen is substituted with a mono- or di-substituted methyl group having activating substituents. Cyclization of .beta.-hydroxy acid amides is mediated by triphenylphosphine-dialkylazodicarboxylate while cyclization of .beta.-halo acid amides is mediated by strong bases e.g. lithium dialkylamides. E.g. Diethyl amino-protected L-serylamin…

    Date Issued:
    1986-06-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Arthur H. Hale, Peringandoor R. Hariharan, Sanjit Roy
    Patent Number:
    US 5637795 B2
    Description:

    A novel process and apparatus have been contrived for the study of the bit/stabilizer balling phenomenon in the laboratory. The device permits a standard testing procedure using a specially designed bob simulating the drill bit for comparing degrees of balling for different rock formations under different drilling conditions involving variable and controlled parameters like weight-on-bit, revolutions-per-minute (rpm), drilling fluids, etc.

    Date Issued:
    1997-06-10
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 4058505 B2
    Description:

    Aromatic polyimides with amine end groups are chain-extended (molecular weight increased) by reacting them with aromatic di- or tri- anhydrides. The reaction can either be at a temperature above the melting point of the reactants or in solvents for the reactants. The polyimides can be shaped and formed prior to chain-extending.

    Date Issued:
    1977-11-15
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Marvin J. Miller, Jingdan Hu
    Patent Number:
    US 6403623 B2
    Description:

    Method for treating tuberculosis with 2-(2-substituted-phenyl)-2-oxazolines and related 5-membered heterocycles represented by the formula ##STR1## Y.sub.1 is e.g. an ester or amide forming group, and X is O, S, or NH; and pharmaceutically acceptable formulations useful therein are provided. A preferred method comprises administering (S)-benzyl2-[2-(benzyloxy)phenyl]-2-oxazoline-4-carboxylate in a suitable formulation. The compounds of the above formula are prepared by known methods, e.g. the…

    Date Issued:
    2002-06-11
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 4118377 B2
    Description:

    Processes for increasing the molecular weight of bis-maleimides are provided. The bis-maleimides are reacted with certain cyclic dienes to form reversible adducts. These adducts, upon elimination of the cyclic diene, yield an extension of the bis-maleimides to higher molecular weight polymers, ultimately to thermally stable, infusible polymers. The process can be interrupted to yield tractable polymers which are also convertible to cross-linked, infusible products. Modifications of the proces…

    Date Issued:
    1978-10-03
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Joan F. Brennecke, Edward J. Maginn
    Patent Number:
    US 6579343 B2
    Description:

    The present invention provides a method for purifying a gas by contacting the gas with a liquid ionic compound. Natural gas may be purified, removing water and carbon dioxide, by contacting the natural gas with a liquid ionic compound.

    Date Issued:
    2003-06-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Min Teng, Marvin J. Miller
    Patent Number:
    US 5750681 B2
    Description:

    Bicyclic .beta.-lactams comprising a 5- or 6-membered lactone or lactam ring are obtained in a process comprising a base induced intramolecular cyclization of a 4-substututed .beta.-lactam having a leaving group in the 1-position. An intramolecular nucleophile transfer reaction is proposed as the operative mechanism and the bicyclic .beta.-lactams are obtained in the required stereochemical form for biological activity. The compounds provided are useful intermediates for the preparation of an…

    Date Issued:
    1998-05-12
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    John G. Duman
    Patent Number:
    US 5633451 B2
    Description:

    The present invention is directed to transgenic plants having nucleic acid sequences encoding Dendroides canadensis thermal hysteresis proteins. The THPs of Dendroides have significantly greater thermal hysteresis activity than any other known anti-freeze protein. The thermal hysteresis activity of the purified THPs can be further enhanced by combining the THPs with various “activating” compounds.

    Date Issued:
    1997-05-27
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Catherine M. Gasparski, Marvin J. Miller, Min Teng
    Patent Number:
    US 5250676 B2
    Description:

    Provided is a process for diastereoselectively preparing compounds of the formula ##STR1## which includes the step of subjecting a compound of the formula ##STR2## to a salt whose anion is a nucleophilic base whose conjugate acid has a pKa in the range of between about -7 to about 14, or a silylated derivative of the salt; wherein R.sub.1 is said nucleophile; R is hydrogen, or protected amino, R.sub.2 is R.sub.4 as defined herein below; R.sub.3 is a leaving group; and R.sub.4 is hydrogen, C.s…

    Date Issued:
    1993-10-05
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Paul D. Shirk, Malcolm J. Fraser, Teresa A. Elick, Omaththage P. Perera
    Patent Number:
    US 6218185 B2
    Description:

    The present invention is directed to nucleic acid and amino acid sequences for transformation constructs containing piggyBac or tagalong transposable elements. These constructs allow for the precise excision and insertion of heterologous DNA into a host cell.

    Date Issued:
    2001-04-17
    Record Visibility:
    Public
    Resource Type
    Patent
  • Inventor(s):
    Gaetano Francis D'Alelio
    Patent Number:
    US 4026871 B2
    Description:

    Aromatic polyimides with phenolic end groups are chain-extended (molecular weight increased) by reacting them with formaldehyde, compounds capable of generating formaldehyde under the reaction conditions or hexamethylene tetramine in the presence of a catalytic amount of lime. These polyimides can be shaped and formed prior to the chain-extending. The aromatic polyimides appropriate for chain-extending are formed by the reaction of aromatic dianhydrides, aromatic diamines and phenolic compoun…

    Date Issued:
    1977-05-31
    Record Visibility:
    Public
    Resource Type
    Patent