Patents by Inventor Shuji Saito

Shuji Saito 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).

  • Thermosensitive recording material
    Patent number: 5372984
    Abstract: A thermosensitive recording material having a high resistance to curling and cockling when colored images are developed thereon comprises a substrate sheet comprising a thermoplastic resin and having a thermal shrinkage of 1.0% to 2.0% at a temperature of 120.degree. C.; a thermosensitive colored image-forming layer formed on a surface of the substrate sheet and comprising a colorless dye precursor, a color-developing agent and a binder; a backcoat layer formed on the opposite surface of the substrate sheet, having a weight of 1 to 10 g/m.sup.2 and comprising 20 to 90 parts by weight of a water-soluble polymeric material 10 to 80 parts by weight of a water-isoluble polymeric material and 1 to 10 parts by weight of a cross-linking agent for the water-soluble polymeric material; and optionally, an overcoat layer formed on the thermosensitive colored image-forming layer and comprising a pigment and binder resin.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: December 13, 1994
    Assignee: New Oji Paper Co., Ltd.
    Inventors: Hiroshige Yamauchi, Hideaki Shinohara, Shuji Saito, Ken Kanazawa
  • Heat-sensitive recording material
    Patent number: 5236883
    Abstract: A heat-sensitive recording material having an improved color image-forming property and an enhanced gloss and resistance to water, oily substances and plasticizers, is provided with a heat-sensitive color-forming layer formed on a substrate surface and comprising a substantially colorless dye precursor, a color-developing agent and a binder; an intermediate layer formed on the color-forming layer and comprising a hydrophilic polymeric material and a pigment; a glossy surface layer formed on the intermediate layer and comprising a hydrophobic polymeric material having a glass transition point of 60.degree. C. or more, and a lubricant; and optionally, an additional intermediate layer formed between the color-forming layer and the intermediate layer and comprising at least one member selected from hydrophilic polymeric materials and hydrophobic polymeric materials.
    Type: Grant
    Filed: December 4, 1990
    Date of Patent: August 17, 1993
    Assignee: Oji Paper Co., Ltd.
    Inventors: Atsushi Nakazawa, Yoshitaka Tomino, Shuji Saito, Hideaki Shinohara
  • Method for preparation of plasma powder and product thereof
    Patent number: 5145706
    Abstract: The present invention relates to a method for preparation of plasma powder characterized by catalytic treatment of plasma with colloidal silica and subsequent powdering of the plasma. The plasma powder thus obtained by the present invention is substantially free of malodorous substances.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: September 8, 1992
    Assignee: Taiyo Kagaku Co., Ltd.
    Inventors: Takashi Hagi, Kouichi Misawa, Shuji Saito, Yuji Sakamoto, Noriaki Kadota, Yoshiro Toda, Nagataka Yamazaki