Patents by Inventor J. A. Donohue

J. A. Donohue 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).

  • Polyamides and copolyamides containing 2,2',4,4',6,6'-hexamethyl-3,3'-diaminobiphenyl moieties
    Patent number: 4384112
    Abstract: Novel polyamides and copolyamides prepared from 2,2'4,4'6,6'-hexamethyl 3,3'-diaminobiphenyl (3,3'-M.sub.2 DAM) and aliphatic or aromatic diacids. 3,3'-M.sub.2 DAM and a mixture of other aliphatic or aromatic diamines may also be suitably used to react with the diacids. These novel polyamides and copolyamides are useful in preparing molded articles, fibers, films, laminates and coatings.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: May 17, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: Edward E. Paschke, J. A. Donohue
  • Polyamide containing 4,4'-diamino-2,2', 6,6'-tetramethylbiphenyl moieties
    Patent number: 4382138
    Abstract: Novel copolyamides and polyamides and molding compositions are prepared from 4,4'-diamino-2,2', 6,6'-tetramethylbiphenyl and aliphatic or aromatic diacids, dianhydride and mixtures of diamines. The polyamides and copolyamides are useful as engineering plastics.
    Type: Grant
    Filed: September 28, 1981
    Date of Patent: May 3, 1983
    Assignee: Standard Oil Company (Indiana)
    Inventors: Edward E. Paschke, J. A. Donohue