Patents by Inventor Sven Hessdoefer

Sven Hessdoefer 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 controlling the scorch time (ST) in the vulcanization of silicic acid-filled rubber blends
    Patent number: 8674009
    Abstract: A process for controlling the scorch time (ST) in the vulcanization of vulcanizable blends containing a composition to be vulcanized, hydrophobized silicic acid and zinc oxide particles wherein the scorch time control is effected by the size and number of zinc oxide particles (amount). The process of the invention is also suitable for preparing vulcanized rubber articles.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: March 18, 2014
    Assignee: Grillo Zinkoxid GmbH
    Inventors: Klaus Diekstall, Burkhardt Jahn, Peter Schubert, Sven Hessdoefer
  • Process for controlling the scorch time (ST) in the vulcanization of silicic acid-filled rubber blends
    Publication number: 20080153989
    Abstract: A process for controlling the scorch time (ST) in the vulcanization of vulcanizable blends containing a composition to be vulcanized, hydrophobized silicic acid and zinc oxide particles wherein the scorch time control is effected by the size and number of zinc oxide particles (amount). The process of the invention is also suitable for preparing vulcanized rubber articles.
    Type: Application
    Filed: November 30, 2007
    Publication date: June 26, 2008
    Inventors: Klaus Diekstall, Burkhardt Jahn, Peter Schubert, Sven Hessdoefer