Patents by Inventor John F. Gerster

John F. Gerster 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).

  • N-methylene malonate of tetrahydroquinoline and derivatives thereof
    Patent number: 3969463
    Abstract: Certain substituted 6,7-dihydro-1-oxo-1H,5H-benzo[ij]-quinolizine-2-carboxylic acids and hydrazides, esters, amides and salts thereof, intermediates therefor, and a process for their preparation are described; the compounds are active as anti-microbial agents.
    Type: Grant
    Filed: January 22, 1975
    Date of Patent: July 13, 1976
    Assignee: Riker Laboratories, Inc.
    Inventor: John F. Gerster