Patents by Inventor Manfred Leibach

Manfred Leibach 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 producing expanded polyolefin particles
    Patent number: 6239185
    Abstract: A process comprises producing expanded polyolefin particles by impregnating polyolefin granules with a volatile blowing agent in suspension under pressure, and then releasing the pressure. The suspension medium has a lower density than the polyolefin granules and the suspension is practically free from suspension agents.
    Type: Grant
    Filed: February 25, 2000
    Date of Patent: May 29, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Frank Braun, Klaus Hahn, Manfred Leibach, Wolfram Kögel, Isidoor De Grave