Patents by Inventor Ingo Venn

Ingo Venn 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 hydrolytic preparation of a prepolymer amide from a C.sub.12 -aminocarboxylic acid lactam
    Patent number: 4837297
    Abstract: A process for the preparation of a prepolymer amide, by hydrolytically polymerizing a lactam/water mixture of a C.sub.12 -aminocarboxylic acid lactam at a temperature in the range from 240-360.degree. C. and a steam pressure in the range of 30-180 bar, and wherein the water content of the lactam/water mixture is in the range of 7.5-30% by weight.
    Type: Grant
    Filed: June 5, 1987
    Date of Patent: June 6, 1989
    Assignee: Huels Aktiengesellschaft
    Inventors: Klaus-Rudolf Meyer, Ingo Venn, Ursula Mueller-Niescher