Patents by Inventor Philipp Schaefer

Philipp Schaefer 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).

  • Patent number: 4502234
    Abstract: A foamed material, which is adapting under pressure to the shape of parts, particularly of parts of the human body, but which on pressure relief again returns to a vast extent and after a certain restoring time into the original shape, consists of the following constituents:(a) substantially saturated liquid hydrocarbons;(b) unsaturated liquid hydrocarbons, preferably polybutadiene;(c) a reactive agent, preferably polyisocyanate, with which the unsaturated liquid hydrocarbons are reacted;(d) a cross-linking agent, for example ethylene hexane diol;(e) hollow microspheres, the thin shell of which consists of vinylidene chloride copolymer and the interior of which contains a gas.
    Type: Grant
    Filed: July 28, 1982
    Date of Patent: March 5, 1985
    Assignee: Secans AG
    Inventors: Helmut Schaefer, Philipp Schaefer
  • Patent number: 4451584
    Abstract: A molding compound for molding body portions preferably serves the purpose of producing a counterpart for the production of a model for making prostheses, particularly teeth prostheses or orthopaedic prostheses, or the purpose of cladding such prostheses for adapting same to a changed shape of body portions. This molding compound consists of a silicone containing pressure-elastic hollow microspheres the thin shell of which consists of a vinylidene chloride copolymer and the interior of which contains a gas. This silicone is initially liquid or pasty and, respectively, kneadable and solidifies after a certain time to a rubber-like consistency by adding a hardener, so that the molding compound reproduces the shape of the body portion to be molded.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: May 29, 1984
    Inventor: Philipp Schaefer
  • Patent number: 4430448
    Abstract: An elastic molded body comprising a cell structure consists of an elastic synthetic plastics material produced by a polyaddition reaction between a liquid diisocyanate or polyisocyanate and a reactant containing at least 18 percent by weight polybutadiene. Elastic hollow microspheres having thin shells consisting of a vinylidene chloride copolymer are embedded within this synthetic plastics material and are firmly an unseparably connected with the elastomeric synthetic plastics material, the hollow microspheres, the interior of which contains a gas, forming closed cells within the synthetic plastics material. These hollow microspheres can be formed in situ within the synthetic plastics material when producing the molded body by inflating compact particles of a vinylidene chloride copolymer and containing an inflating agent under the influence of heat, particularly under the influence of the heat of reaction generated. The hollow microspheres have a diameter between 10 and 100 micrometer.
    Type: Grant
    Filed: June 9, 1982
    Date of Patent: February 7, 1984
    Inventors: Philipp Schaefer, Carsten Picker, Helmut Schaefer
  • Patent number: 4252910
    Abstract: A material for use in resilient conforming pads, cushions and the like and cushions filled with such material as described. The material comprises elastic gas-filled hollow microparticles cohered to a mass by a thermoplastic bonding agent semi-liquid at body temperature. The material is useful for providing contour-conforming resilient padding for garments, athletic equipment, prosthetic devices, surgical or vehicular cushions and the like. The gas-filled hollow particles each have a resilient gas-impermeable thermoplastic shell enclosing a quantity of a gas.
    Type: Grant
    Filed: March 7, 1978
    Date of Patent: February 24, 1981
    Inventor: Philipp Schaefer
  • Patent number: 4037636
    Abstract: Tires are improved against puncture damage by at least partially filling the inside of the tire with hollow spheres which contain a gas and whose thin shell consists of synthetic material, these spheres having a diameter of between 0.01 and 0.04 mm. and a density of 0.005 to 0.25 g/cc., and/or by lining at least a portion of the surface of the inner wall of the tire with a strip of composite material of low density comprising a suspension of said hollow spheres in a mass of liquid or pasty synthetic material of low molecular weight.
    Type: Grant
    Filed: January 12, 1976
    Date of Patent: July 26, 1977
    Assignee: Michelin Recherche et Technique
    Inventors: Bodo Hagenbohmer, Philipp Schaefer