Patents by Inventor Williard M. Welch, Jr.

Williard M. Welch, Jr. 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).

  • Anti-anxiety agents
    Patent number: 4994455
    Abstract: Anti-anxiety agents; namely, 1-(heterocyclylcarbonyl)-3-[4-(2-pyrimidinyl)-1-piperazinyl]propanes and 1-(heterocyclylsulfonyl)-3-[4-(2-pyrimidinyl)-1-(piperazinyl)]propanes; and methods for their preparation and use.
    Type: Grant
    Filed: April 21, 1990
    Date of Patent: February 19, 1991
    Assignee: Pfizer Inc.
    Inventor: Williard M. Welch, Jr.