Patents by Inventor George Francis Field

George Francis Field 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).

  • Hydroxybiotin
    Patent number: 4054740
    Abstract: This invention relates to a synthesis of biotin by the reduction of dehydrobiotin. The dehydrobiotin is prepared from 6-hydroxy-7-nitro-heptanoic acid methyl ester. Novel intermediates are also obtained by this synthesis.
    Type: Grant
    Filed: September 5, 1975
    Date of Patent: October 18, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventor: George Francis Field
  • 2-Aroyl-3-amino pyrazines and the 3(-2haloacetamide derivatives thereof
    Patent number: 3954753
    Abstract: Novel pyrazino-1,4-diazepines are disclosed together with processes for their preparation and novel intermediates used in these processes. These novel diazepines are useful as sedatives, muscle-relaxants and anti-convulsants.
    Type: Grant
    Filed: February 13, 1975
    Date of Patent: May 4, 1976
    Assignee: Hoffmann-La Roche Inc.
    Inventors: George Francis Field, Leo Henryk Sternbach, Armin Walser