Patents by Inventor Ralf Forkmann

Ralf Forkmann 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).

  • Method for reprocessing scrap rubber
    Patent number: 5275948
    Abstract: A method for reprocessing scrap rubber, which produces reclaimed rubber from comminuted scrap rubber after devulcanization, in a biotechnology-type of process, by holding the comminuted scrap rubber in a bacterial suspension of chemolithotropic microorganisms with a supply of air, until sulphur as an elementary sulphur and/or sulfuric acid is separated from the remaining replasticized reclaimed rubber. This biotechnological reprocessing obtains reclaimed rubber and sulphur in a simplified manner which products can be reused.
    Type: Grant
    Filed: December 23, 1991
    Date of Patent: January 4, 1994
    Assignee: Holzemann Metallverarbeitung GmbH
    Inventors: Gunhild Straube, Eckhardt Straube, Willi Neumann, Helmut Ruckauf, Ralf Forkmann, Martin Loffler