Patents by Inventor Larry W. Autry

Larry W. Autry has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for producing 5-t-butylisophthalic acid
    Patent number: 4827026
    Abstract: A method is disclosed for producing purified 5-t-butylisophthalic acid by the liquid-phase oxidation of 5-t-butyl-m-xylene in a solvent and in the presence of a catalyst comprising cobalt, manganese and bromine components.
    Type: Grant
    Filed: November 24, 1987
    Date of Patent: May 2, 1989
    Assignee: Amoco Corporation
    Inventors: Stephen P. Brugge, Jon J. Harper, Larry W. Autry
  • Crystalline polyamide composition from dicarboxylic acid mixture and diamine
    Patent number: 4603166
    Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.
    Type: Grant
    Filed: February 8, 1985
    Date of Patent: July 29, 1986
    Assignee: Amoco Corporation
    Inventors: Wassily Poppe, Yu-Tsai Chen, Larry W. Autry, Joel A. Richardson, David P. Sinclair
  • Crystalline copolyamides from terephthalic acid and hexamethylenediamine and trimethylhexamethylenediamine
    Patent number: 4495328
    Abstract: Crystalline copolyamides from terephthalic acid and mixtures of hexamethylenediamine and trimethylhexamethylenediamine and filled molding compositions prepared therefrom are disclosed. The injection moldable crystalline copolyamides in molded form are useful in engineering resin applications such as the hood of an automobile, a shroud for a lawn mower, chain saw guard, etc.
    Type: Grant
    Filed: April 19, 1984
    Date of Patent: January 22, 1985
    Assignee: Standard Oil Company (Indiana)
    Inventors: Wassily Poppe, Yu-Tsai Chen, Larry W. Autry
  • Crystalline polyamide composition from dicarboxylic acid mixture and diamine
    Patent number: RE34447
    Abstract: Novel crystalline polyamides having high heat deflection temperatures when filled are prepared from aliphatic diamines and either mixtures of terephthalic acid and adipic acid or mixtures of terephthalic acid, isophthalic acid and adipic acid. The mole ratio of aliphatic diamine to terephthalic acid, isophthalic acid, and adipic acid is in the range of about 100:65-95:25-0:35-5. The polyamides can be filled with about 10 to about 60 parts by weight of a filler. The mechanical properties of these polyamides are largely unaffected by absorbed water.
    Type: Grant
    Filed: July 21, 1988
    Date of Patent: November 16, 1993
    Assignee: Amoco Corporation
    Inventors: Wassily Poppe, Larry W. Autry, Yu-Tsai Chen, Joel A. Richardson, David P. Sinclair