Patents by Inventor Constant M. A. Cramers

Constant M. A. Cramers 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 preparing 4-oxocapronitrile
    Patent number: 4117000
    Abstract: A process is described for improving the synthesis of 4-oxocapronitrile by adding an inert solvent to the atmospheric pressure distillation of the reaction mixture so that the temperature of said distillation is maintained below about 195.degree. C.
    Type: Grant
    Filed: August 24, 1977
    Date of Patent: September 26, 1978
    Assignee: Stamicarbon, B.V.
    Inventors: Theodorus Balg, Constant M. A. Cramers, Hendrikus J. G. Maessen