Patents by Inventor William O. Drake

William O. Drake 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).

  • Carbonates and urethanes of 2,2'-alkylene or -cycloalkylene-bis-4,6-disubstituted phenols as stabilizers for organic materials
    Patent number: 4230857
    Abstract: Carbonates and urethanes of 2,2'-alkylene or -cycloalkylene-bis-4,6-disubstituted phenols are useful for stabilizing organic materials against the degradative effects of oxygen.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: October 28, 1980
    Assignee: Sandoz Ltd.
    Inventors: William O. Drake, Hans Hinsken, Horst Mayerhoefer, Wolfgang H. Mueller
  • Flameproofing compositions comprising a triester of phosphorous phosphoric or thiophosphoric acid and a haloalkyl aryl ether
    Patent number: 4147636
    Abstract: Flameproofing composition comprises an O,O,O-triester of phosphorus, phosphoric or thiophosphoric acid and a haloalkyl aryl ether, and optionally a chlorinated aliphatic hydrocarbon and/or an organic tin or lead compound. The composition is useful for flameproofing polymeric organic materials, especially synthetic polymeric organic materials such as polypropylene, which may alternatively be flameproofed by treatment separately with the individual components of the composition.
    Type: Grant
    Filed: July 22, 1977
    Date of Patent: April 3, 1979
    Assignee: Sandoz Ltd.
    Inventors: William O. Drake, Hans-Werner Finck, Horst Mayerhoefer, Wolfgang H. Mueller