Patents by Inventor Wolfram Kogel

Wolfram Kogel 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).

  • Production of expanded polyolefin particles
    Patent number: 5925686
    Abstract: Expanded polyolefin particles are produced by impregnation of polyolefin granules with a volatile blowing agent in suspension under pressure and subsequent decompression. The blowing agent used is ammonia.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: July 20, 1999
    Assignee: BASF Aktiengesellschaft
    Inventors: Wolfram Kogel, Isidoor De Grave, Klaus Hahn, Joachim Fischer
  • Polyolefin particle foam
    Patent number: 5773481
    Abstract: In a process for producing polyolefin foam particles, partially foamed particles are produced in a first stage by extrusion of a polyolefin containing solid blowing agents, and these are then further foamed in the second stage using steam.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: June 30, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Joachim Fischer, Jens Rieger, Klaus Hahn, Isidoor De Grave, Wolfram Kogel
  • Production of expanded polyolefin beads
    Patent number: 5703135
    Abstract: The invention relates to a process for the production of expanded polyolefin beads by impregnating polyolefin particles with volatile blowing agents in a fluidized bed.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: December 30, 1997
    Assignee: BASF Aktiengesellschaft
    Inventors: Jurgen Schweinzer, Joachim Fischer, Isidoor De Grave, Wolfram Kogel