Patents by Inventor Raymond Janin

Raymond Janin 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 preparation of thiazolesulphenamides
    Patent number: 4182873
    Abstract: Thiazolesulphenamides, useful as rubber vulcanization accelerators, are made by reaction of a 2-mercapto-thiazole or a 2,2'-dithiazolyl disulphide with ammonia or a primary or secondary amine in the presence of oxygen and a copper catalyst of specified kind.
    Type: Grant
    Filed: June 2, 1975
    Date of Patent: January 8, 1980
    Assignee: Rhone-Poulenc S.A.
    Inventor: Raymond Janin
  • Process for the preparation of anthraquinone
    Patent number: 3931254
    Abstract: A simple process for preparing anthraquinone in good yield from anthracene is described, which process comprises oxidising anthracene by means of oxygen or an oxygen-containing gas in the liquid phase, in an inert organic diluent, in the presence of a halogen-copper bond free copper derivative.
    Type: Grant
    Filed: May 8, 1974
    Date of Patent: January 6, 1976
    Assignee: Rhone-Poulenc S.A.
    Inventors: Raymond Janin, Leon Krumenacker