Patents by Inventor Gerhard Horpel

Gerhard Horpel 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).

  • Polysulfide derivatives
    Patent number: 5241108
    Abstract: Polysulfide derivatives having the general formula (A--S--S--).sub.2 X--S--S--A, processes for their production and their use for crosslinking of reversion-stable rubber vulcanizates are provided. Crosslinking with reduced reversion and loss of elastomeric properties with age is achieved by the crosslinking system provided by the invention.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: August 31, 1993
    Assignee: Huels Aktiengesellschaft
    Inventors: Gerhard Horpel, Karl-Heinz Nordsiek
  • Process for deactivating polymerization-inducing radicals
    Patent number: 4965326
    Abstract: Process for inhibiting and for stopping radical induced polymerizations which employs an aromatic hydroxy dithiocarboxylic acid or salt thereof as stopping agent for deactivating radicals, thereby precluding the formation of carcinogenic nitrosamines.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: October 23, 1990
    Assignee: Bunawerke Huls GmbH
    Inventors: Gerhard Horpel, Joachim Pangratz