Patents Assigned to Philipp Schaefer
  • Patent number: 4923732
    Abstract: A dressed leather is provided at least on one side with depressions and have on this side absorbent protruding fibres. At this side the leather is bonded with a layer formed of an aqueous dispersion of synthetic plastics material, said layer fills the depressions and completely receives the protruding fibres and forms at least a part of the dressing, which dressing is provided with a structured surface at the side turned away from the leather.Preferably, the dressing consists of two layers, the inner layer, which is adjacent the leather and completely receives the protruding fibres, is formed of the aqueous dispersion of synthetic plastics material and the outer layer, which has the structured surface, consists of an aqueous dispersion of synthetic plastics material or of a liquid solution of synthetic plastics material.
    Type: Grant
    Filed: August 14, 1989
    Date of Patent: May 8, 1990
    Assignees: Philipp Schaefer, Microplastic Corp.
    Inventor: Philipp Schaefer
  • Patent number: 4874449
    Abstract: In a process for dressing a substantially flat substrate having on at least one side a rough surface fibers protruding therefrom, there is first heated a support member, the upper side of which consists of silicone rubber having anti-adhesive properties and comprises small recesses for transmitting a pattern to said dressing, whereupon a first aqueous dispersion of synthetic plastics material is applied onto the upper side of this support member for forming a first layer of the dressing. Subsequently, this support member is heated from the bottom side located opposite the upper side of the support member at least till solidification of the first layer. Subsequently a second aqueous dispersion of synthetic plastics material is applied onto the solidified first layer or onto the rough surface of the substrate, said second dispersion forming a second layer of the dressing when having become solidified.
    Type: Grant
    Filed: December 22, 1987
    Date of Patent: October 17, 1989
    Assignee: Philipp Schaefer
    Inventors: Philipp Schaefer, Helmut Schaefer
  • Patent number: 4751116
    Abstract: A dressed leather is provided which comprises a split leather having one side from which fibers protrude, a first layer of solidified aqueous dispersion having a thickness between 0.07 mm and 0.22 mm of a synthetic plastics material in which the fibers are completely immersed on the one side, and a second layer of a synthetic plastics material of generally the same thickness of the first layer bonded to the first layer and having turned away therefrom a textured or non-textured surface. Additionally, there may be a finish layer overlying the textured or non-textured surface of the second layer. The split leather is substantially free of the dispersion except at the fibers.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: June 14, 1988
    Assignees: Philipp Schaefer, Microplastic Corp.
    Inventors: Helmut Schaefer, Philipp Schaefer