Patents by Inventor Hans-Reiner Zerfass

Hans-Reiner Zerfass 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).

  • Patent number: 4355068
    Abstract: In a gasket made of a fibrous and/or porous material impregnated with a polymerizable saturating agent which is partially polymerized only to a plastically deformable consistency, an additive which prevents complete polymerization and hardening is applied to the surfaces of the gasket after impregnation with the saturating agent and partial polymerization.
    Type: Grant
    Filed: November 13, 1981
    Date of Patent: October 19, 1982
    Assignee: Goetze AG
    Inventors: Horst Beyer, Hans-Reiner Zerfass