Patents by Inventor Ralph Haenni

Ralph Haenni 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).

  • Nonatetraenoic acid derivatives
    Patent number: 4169103
    Abstract: The compound 9-(2,2,5-trimethyl-4-hydroxy or oxo-1-cyclohexenyl)-3,7-dimethyl-2,4,6,8-nonatetraenoic acid and derivatives useful as antitumor agents and in the prophylaxis and/or treatment of certain carcinomas.
    Type: Grant
    Filed: April 12, 1978
    Date of Patent: September 25, 1979
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Ralph Haenni, Gottlieb Ryser