Patents by Inventor Heribert Rossel

Heribert Rossel 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 preparing a flame-resistant, elastic soft polyurethane foam
    Patent number: 5192811
    Abstract: A process for preparing a flame-resistant, elastic soft polyurethane foam includes admixing a portion of expanded graphite having a particle size of from 0.2 to 1 mm as a flame retardant and a portion of melamine, with a foam reaction mixture of polyol and polyisocyanate.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: March 9, 1993
    Assignee: Metzeler Schaum GmbH
    Inventors: Ulrich Heitmann, Heribert Rossel
  • Process for producing a flame-resistant elastic soft polyurethane foam
    Patent number: 5169876
    Abstract: A process for producing a flame-resistant elastic soft polyurethane foam from a foam reaction component mixture of a polyol, a polyisocyanate, and a proportion of expanded graphite in the form of flakes as a flame retardant, includes initially admixing the flakes having a size on the order of magnitude of resultant foam cell walls with the polyol component. The flakes are incorporated to form at least part of the cell walls upon expansion of the foam.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: December 8, 1992
    Assignee: Metzeler Schaum GmbH
    Inventors: Ulrich Heitmann, Heribert Rossel