Patents by Inventor Johan Bernhard Koster

Johan Bernhard Koster 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 the production of cold hardening foams containing urethane groups by in-mold foaming
    Patent number: 4038221
    Abstract: This invention relates to a process for the making of cold-hardening foams containing urethane groups by in-mold foaming. The need to use a relatively large number of additives like emulsifiers, stabilizers and activators can be eliminated by using certain silicon compounds of a specific formula. Foamable reaction mixtures using these compounds with polyethers, polyisocyanates, water and/or organic blowing agents, and catalysts will produce foams with properties acceptable for use in upholstery, cars, and furniture.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: July 26, 1977
    Assignee: Bayer Aktiengesellschaft
    Inventors: Johan Bernhard Koster, Hans Joachim Meiners, Hans Heinrich Moretto