Patents Examined by Donald B. Mayer
  • Preparation of carbonate diisocyanates and related compounds
    Patent number: 4746754
    Abstract: A class of novel tertiary alkyl isocyanates. Of these, novel carbonate diisocyanates can be prepared by contacting a carbonyl dihalide and an aminotertiaryalkylhydroxyaromatic compound in the presence of a base and a reaction medium under reaction conditions.
    Type: Grant
    Filed: May 16, 1986
    Date of Patent: May 24, 1988
    Assignee: The Dow Chemical Company
    Inventors: Eric W. Otterbacher, Abel Mendoza, Cynthia L. Rand
  • Curtain material No. 438
    Patent number: D258393
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: February 24, 1981
    Assignee: Gardisette International AG
    Inventor: Hans Stocker