Patents by Inventor Heinz-Peter Wunram

Heinz-Peter Wunram 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).

  • Fire-retardant material and a method for the manufacture of such a material
    Patent number: 6001285
    Abstract: Intumescing materials for the fighting of fire or the prevention of damage resulting from fires are, as a rule, packaged in cartouches, from which they are removed for processing at building sites or the like. Their processing ability is limited because they harden to a rubberlike state with time. However, according to the invention, their spreading ability is maintained when a specific amount of a cellulose is added to the material.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: December 14, 1999
    Assignee: B & F Formulier- und Abfuell GmbH
    Inventor: Heinz-Peter Wunram