Patents by Inventor Robert August Schmidt

Robert August Schmidt 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).

  • Amides of 2-(3-dibenzofuran) alkanoic acids
    Patent number: 4097497
    Abstract: Dibenzofurans of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as hereinafter described, prepared, inter alia, from the correspondingly substituted phenol and haloketocyclohexane are described. The dibenzofurans of the invention are useful anti-inflammatory, analgesic and anti-rheumatic agents.
    Type: Grant
    Filed: January 27, 1977
    Date of Patent: June 27, 1978
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Leo Berger, Robert August Schmidt
  • 8-Halo-dibenzofuran-3-acetic acids and certain esters thereof
    Patent number: 4022805
    Abstract: Dibenzofurans of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as hereinafter described PREPARED, INTER ALIA, FROM THE CORRESPONDINGLY SUBSTITUTED PHENOL AND HALOKETOCYCLOHEXANE ARE DESCRIBED. The dibenzofurans of the invention are useful antiinflammatory, analgesic and anti-rheumatic agents.
    Type: Grant
    Filed: February 10, 1975
    Date of Patent: May 10, 1977
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Leo Berger, Robert August Schmidt