Patents by Inventor Tamotu Nagao

Tamotu Nagao 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: 4906516
    Abstract: A leather-like foam sheet for vacuum forming, which comprises:(1) a transparent of semitransparent colored polyurethane elastomer film layer,(2) a colored polyurethane elastomer film layer,(3) a polyurethane adhesive layer,(4) a thermoplastic resin foam layer (optional),(5) a thermoplastic resin sheet layer, and(6) a thermoplastic resin foam layer.The foam sheet of the present invention has excellent resistance and forming properties and a high-grade leather-like appearance and a soft feeling to the touch similar to those of natural leather and is useful for a trim material of a car and for furniture and other miscellaneous goods having leather-like appearance, touch, and other properties.
    Type: Grant
    Filed: March 23, 1989
    Date of Patent: March 6, 1990
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Chikaaki Okamura, Tamotu Nagao
  • Patent number: 4865904
    Abstract: A laminated cloth which comprises (A) a cloth and (B) a crosslinking polyvinyl chloride skin layer, and optionally (C) a polyvinyl chloride layer as a primary coat for the layer (B), said laminated cloth having improved deep drawing properties and excellent tolerant to vacuum forming and being useful as a covering for interior trims of automobiles and other vacuum forming products and also as a surface decorating material for various products.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: September 12, 1989
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Chikaaki Okamura, Akihito Fujita, Tamotu Nagao, Fumihiko Yoshida
  • Patent number: 4781976
    Abstract: A skin covering for trims of automobiles having three layer structure comprising(a) a surface layer comrising a PVC having a mean degree of polymerization (P) of 2,000 or more (high polymerization PVC),(b) a foam layer comprising a blend of a crosslinking PVC and a PVC having a P of less than 1,500 (low polymerization PVC) and a foaming agent, and(c) a back layer comprising a low polymerization PVC,said skin covering having excellent processability with the cloth by high frequency welding and excellent vacuum forming properties and being useful for the facing of trims of automobiles.
    Type: Grant
    Filed: November 27, 1987
    Date of Patent: November 1, 1988
    Assignee: Sunstar Giken Kabushiki Kaisha
    Inventors: Akihito Fujita, Tamotu Nagao, Chikaaki Okamura, Fumihiko Yoshida