Patents by Inventor Reiner Hagen

Reiner Hagen 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).

  • Nylon 6 chip and production of nylon 6 yarn and film and of further industrial articles from nylon 6
    Patent number: 6194537
    Abstract: Nylon 6 chip is obtainable by hydrolytic polymerization of caprolactam in the presence of dicarboxylic acids as chain regulators, subsequent processing of the polymer melt into chip, extraction of the low molecular weight portions from the chip with water and subsequent drying of the chip.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: February 27, 2001
    Assignee: Karl Fischer Industrieanlagen GmbH
    Inventors: Eberhard Raue, Reiner Hagen