Patents by Inventor Jurgen Ehrlich

Jurgen Ehrlich 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 preparation of a pulverulent filled rubber
    Patent number: 4250082
    Abstract: A process for the precipitation of a pulverulent filled rubber, which comprises mixing a rubber latex, a rubber solution or a rubber emulsion with a filler suspension, waterglass and a water-soluble aluminum salt at a predetermined pH value of 3.0-3.7, the pH value being kept constant by introduction of acid during the precipitation.
    Type: Grant
    Filed: May 14, 1979
    Date of Patent: February 10, 1981
    Assignee: Chemische Werke Huls Aktiengesellschaft
    Inventors: Neithart Sommer, Karl-Heinz Nordsiek, Jurgen Ehrlich