Patents by Inventor Hans Wilmsen, deceased

Hans Wilmsen, deceased 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 manufacture of plastic foams and flame-proofing foams characterized by the use of a carrier foam
    Patent number: 4043950
    Abstract: Process for the preparation of flameproof synthetic resin foams which comprises admixing (a) a furan resin and/or (b) a co-condensate of a furan resin with phenol and/or melamine and/or urea and/or cresol, and/or (c) a polyester, epoxy, polyurethane, acrylic, alkyd, phenoplast or aminoplast resin or a mixture thereof, with a carrier foam of an aqueous and/or aqueous alcoholic synthetic resin prepared with the aid of a foaming agent and compressed gas.
    Type: Grant
    Filed: May 3, 1976
    Date of Patent: August 23, 1977
    Inventors: Hans Wilmsen, deceased, by Joerg Michael Wilmsen, sole heir
  • Apparatus for the manufacture of homogeneous, fine-pored synthetic resin foams
    Patent number: 4038037
    Abstract: An apparatus for the continuous preparation of a homogeneous fine-pored synthetic resin foam, which comprises in combination a foaming chamber having one or more nozzle inlets and an outlet, a circulation hose attached at one end to the said outlet and at the opposite end to a first mixing chamber with a nozzle device, and one or more subsequent mixing chambers with nozzles for the carrier foam and additives, the said mixing chambers not being subdivided and being free from baffle plates, screws or stirrers.
    Type: Grant
    Filed: September 10, 1974
    Date of Patent: July 26, 1977
    Inventor: Hans Wilmsen, deceased