Patents by Inventor Tomio Doi

Tomio Doi 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).

  • Decorative sheet and process for preparation thereof
    Patent number: 5296340
    Abstract: A decorative sheet having a first substrate sheet 11 formed of a transparent plastic material, in one or both of the surfaces of which all or a part of a pattern-printed layer 2 is embedded, a laminated sheet formed by laminating a second substrate sheet 12 formed of a transparent plastic material on one surface of the abovementioned sheet, or a laminated sheet formed by laminating a third substrate sheet, 13 formed of a plastic material having a concealing effect on the above-mentioned sheet or laminated sheet. This decorative sheet has an excellent three-dimensional effect.
    Type: Grant
    Filed: December 20, 1990
    Date of Patent: March 22, 1994
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Masaki Tsukada, Osamu Takeko, Yoshiharu Horie, Tomio Doi, Norinaga Nakamura, Kenshi Shimizu
  • Non-fogging sheet and its production
    Patent number: 5273812
    Abstract: A method for producing a thick film type of non-fogging sheets having a thickness of 30 .mu.m or more comprises the steps of: preparing a solvent-free composition comprising (a) a polymer, (b) a hydrophilic monomer and (c) a surface active agent and having a viscosity of 50,000 cP or less, applying this composition as a coating on the surface of a backing film without recourse to any solvent, and crosslinking the thus coated composition by exposure thereof to ionizing radiation, thereby forming a hydrophilic film having a thickness of 30 .mu.m or more.
    Type: Grant
    Filed: December 24, 1991
    Date of Patent: December 28, 1993
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Kiyoshi Oguchi, Kenji Ueda, Osamu Takekoh, Tomio Doi, Masahiro Yamamoto