Patents by Inventor Steven J. Behrend

Steven J. Behrend 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).

  • Process of preparing polyamide-imide and polyimide polymers from acid anhydrides and dianhydrides of disubstituted maleic anhydrides
    Patent number: 5098991
    Abstract: A process is disclosed for preparation of anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. The resulting alkene compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides which are also disclosed, as well as a process for their preparation.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: March 24, 1992
    Assignee: Amoco Corporation
    Inventors: Steven J. Behrend, David A. Young, Ellis K. Fields
  • Acid anhydrides and dianhydrides of disubstituted maleic anhydrides
    Patent number: 5072003
    Abstract: Compounds are disclosed which are anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. These compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: December 10, 1991
    Assignee: Amoco Corporation
    Inventors: Steven J. Behrend, Ellis K. Fields
  • Acid anhydrides and dianhydrides of disubstituted maleic anhydrides
    Patent number: 5003085
    Abstract: A process is disclosed for preparation of anhydrides containing additional carboxylic acid moieties and dianhydrides of disubstituted maleic anhydride compounds wherein the acid anhydrides and dianhydrides retain their alkene character. The resulting alkene compounds are useful as precursors for polyesters, thermally stable polyamide-imides and polyimides which are also disclosed, as well as a process for their preparation.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: March 26, 1991
    Assignee: Amoco Corporation
    Inventors: Steven J. Behrend, David A. Young, Ellis K. Fields
  • Disubstituted maleic anhydride compounds
    Patent number: 4638072
    Abstract: Di-substituted maleic anhydride compounds are disclosed of the structural formula ##STR1## wherein R and R.sup.1 are selected from the group consisting of aliphatic and phenyl moieties, and R.sup.2 is a divalent aromatic moiety. Polyamide-imide polymers, polyimide polymers and vinyl copolymers derived therefrom are also disclosed.
    Type: Grant
    Filed: December 11, 1985
    Date of Patent: January 20, 1987
    Assignee: Standard Oil Company (Indiana)
    Inventors: Ellis K. Fields, Mark L. Winzenburg, Steven J. Behrend
  • Disubstituted maleic anhydride compounds
    Patent number: 4596867
    Abstract: Di-substituted maleic anhydride compounds are disclosed of the structural formula ##STR1## wherein R and R.sup.1 are selected from the group consisting of aliphatic and phenyl moieties, and R.sup.2 is a divalent aromatic moiety. Polyamide-imide polymers, polyimide polymers and vinyl copolymers derived therefrom are also disclosed.
    Type: Grant
    Filed: July 12, 1984
    Date of Patent: June 24, 1986
    Assignee: Standard Oil Company (Indiana)
    Inventors: Ellis K. Fields, Mark L. Winzenburg, Steven J. Behrend