Patents by Inventor Philip E. Shaw

Philip E. Shaw 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).

  • Polyhydrophenanthrene derivatives
    Patent number: 3992437
    Abstract: Alkyl polyhydro-2-phenanthrylideneacetates are prepared by interacting the corresponding 2-oxopolyhydrophenanthrenes with a tri-lower-alkyl .alpha.-phosphono-lower-alkanoate. Said alkyl polyhydro-2-phenanthrylideneacetates are hydrolyzed to the free acid, and then reesterified via the acid chloride with a tertiaryamino-lower-alkanol to give basic esters having cardiotonic activity.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: November 16, 1976
    Assignee: Sterling Drug Inc.
    Inventors: Philip E. Shaw, Sol J. Daum, Robert L. Clarke
  • Polyhydro-2-phenanthrylideneacetic acids and esters thereof
    Patent number: 3932482
    Abstract: Alkyl polyhydro-2-phenanthrylideneacetates are prepared by interacting the corresponding 2-oxopolyhydrophenanthrenes with a tri-lower-alkyl .alpha.-phosphono-lower-alkanoate. Said alkyl polyhydro-2-phenanthrylideneacetates are hydrolyzed to the free acid, and then reesterified via the acid chloride with a tertiary-amino-lower-alkanol to give basic esters having cardiotonic activity.
    Type: Grant
    Filed: January 5, 1971
    Date of Patent: January 13, 1976
    Assignee: Sterling Drug Inc.
    Inventors: Philip E. Shaw, Sol J. Daum, Robert L. Clarke