Patents by Inventor John E. Over

John E. Over 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 a chlorinated diisocyanate
    Patent number: 3972910
    Abstract: A process for the preparation of compounds represented by the formula ##SPC1##Wherein Z is ##EQU1## WHEREIN R' and R' are hydrogen, alkyl or aryl and n is 0 or a positive integer, which compounds are particularly useful as chain extenders or in preparing isocyanates or polyols to be used in the production of polyurethane plastics.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: August 3, 1976
    Assignee: Bayer Aktiengesellschaft
    Inventors: Sidney H. Metzger, Marvin L. Kaufman, John E. Over