Patents by Inventor Johan W. Garritsen

Johan W. Garritsen 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).

  • Preparation of omega-amino-substituted beta-alkoxycarboxylic esters
    Patent number: 3931292
    Abstract: An omega-amino-beta-alkoxycarboxylic acid ester is prepared by subjecting to hydrogenation in the liquid phase an omega-cyano-beta-alkoxycarboxylic acid ester. The hydrogenation may be carried out at a temperature of 70.degree. to 150.degree.C. The amino-esters obtained can be cyclized through heating into beta-alkoxy-omega-lactams which may be applied for preparation of polyamides and copolyamides.
    Type: Grant
    Filed: December 5, 1973
    Date of Patent: January 6, 1976
    Assignee: Stamicarbon B.V.
    Inventors: Johan W. Garritsen, Josef M. Penders