Patents by Inventor Kehju Kamiyama

Kehju Kamiyama 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).

  • Publication number: 20070141328
    Abstract: The present invention provides a protective film which can be adhered to a substrate having a three-dimensional characteristic. This can be achieved even when the operation is conducted in-situ at temperatures of 40° C. to 60° C. The decorative protective film comprises a toughening layer, a protective (preferably embossable) layer, and an adhesive layer. The protective layer is on one side of the toughening layer. The adhesive layer is on the other side of the toughening layer. The protective layer comprises a thermoplastic amorphous polyester resin having a tensile modulus of 400 to 2100 MPa. The toughening layer comprises a polyurethane resin having a glass transition temperature of ?50°C. to 0°C. The toughening layer may be colored.
    Type: Application
    Filed: September 27, 2004
    Publication date: June 21, 2007
    Inventor: Kehju Kamiyama
  • Patent number: 6929846
    Abstract: An object of the present invention is to provide a decorative sheet which can be adhered on a surface of an article having a three-dimensional curved surface, even when the operation is conducted in a place of operation at such a temperature as 40 to 60° C., and which does not use vinyl chloride resin. The present invention discloses a decorative sheet having a decorative layer, a protective layer disposed on a surface of the decorative layer, and an adhesive layer formed on the other surface of the decorative layer, wherein the decorative layer comprises a thermoplastic resin, the protective layer is composed of a resin composition comprising an amorphous polyester resin, and both the decorative layer and the protective layer have a glass transition temperature of 20 to 60° C.
    Type: Grant
    Filed: March 21, 2002
    Date of Patent: August 16, 2005
    Assignee: 3M Innovative Properties Company
    Inventor: Kehju Kamiyama
  • Publication number: 20040137249
    Abstract: An object of the present invention is to provide a decorative sheet which can be adhered on a surface of an article having a three-dimensional curved surface, even when the operation is conducted in a place of operation at such a temperature as 40 to 60° C., and which does not use vinyl chloride resin. A decorative sheet comprising a decorative layer, a protective layer disposed on a surface of the decorative layer, and an adhesive layer formed on the other surface of the protective layer, wherein the decorative layer comprises a thermoplastic resin, the protective layer is composed of a resin composition comprising an amorphous polyester resin, and both the decorative layer and the protective layer have a glass transition temperature of 20 to 60° C.
    Type: Application
    Filed: October 1, 2003
    Publication date: July 15, 2004
    Inventor: Kehju Kamiyama