Patents by Inventor Philip F. Hughes

Philip F. Hughes 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 for the production of substituted 2-oxocyclohexaneacetic acid esters
    Patent number: 4898967
    Abstract: Process for the production of substituted 2-oxocyclohexaneacetic acid esters and intermediates used for their production. The substituted 2-oxocyclohexaneacetic acid esters are themselves useful intermediates for the manufacture of substituted 2,3,4,9-tetrahydro-1H-carabazole-1-acetic acid derivatives having useful analgesic and anti-inflammatory activity.
    Type: Grant
    Filed: February 13, 1989
    Date of Patent: February 6, 1990
    Assignee: American Home Products Corp.
    Inventors: Philip F. Hughes, Dominick Mobilio, Leslie G. Humber
  • Process for the production of substituted 2-oxocyclohexaneacetic acid esters
    Patent number: 4861910
    Abstract: Process for the production of substituted 2-oxocyclohexaneacetic acid esters and intermediates used for their production. The substituted 2-oxocyclohexaneacetic acid esters are themselves useful intermediates for the manufacture of substituted 2,34,9-tetrahydro-1H-carbazole-1-acetic acid derivatives having useful analgesic and anti-inflammatory activity.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: August 29, 1989
    Assignee: American Home Products Corporation
    Inventors: Philip F. Hughes, Dominick Mobilio, Leslie G. Humber
  • Substituted 2-oxocyclohexaneacetic acid esters
    Patent number: 4748266
    Abstract: Process for the production of substituted 2-oxocyclohexaneacetic acid esters and intermediates used for their production. The substituted 2-oxocyclohexaneacetic acid esters are themselves useful intermediates for the manufacture of substituted 2,3,4,9-tetrahydro-1H-carbazole-1-acetic acid derivatives having useful analgesic and anti-inflammatory activity.
    Type: Grant
    Filed: March 2, 1987
    Date of Patent: May 31, 1988
    Assignee: American Home Products Corporation
    Inventors: Philip F. Hughes, Dominick Mobilio, Leslie G. Humber