Patents by Inventor Peter M. Quan

Peter M. Quan 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).

  • Process for the manufacture of aromatic nitriles
    Patent number: 4222935
    Abstract: A process for the manufacture of aromatic nitriles by reacting an aromatic halogen compound with formamide and the anhydride of a monocarboxylic acid in the presence of a copper catalyst and an acid-binding agent. Particularly applicable to replacement of halogen ortho to the azo linkage of an azo dyestuff by cyano.
    Type: Grant
    Filed: July 27, 1979
    Date of Patent: September 16, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: Antony Greenall, Raymond Price, Peter M. Quan