Patents by Inventor Satoshi Chonan

Satoshi Chonan 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).

  • Process for producing a heat sensitive stencil sheet
    Patent number: 5622109
    Abstract: A heat-sensitive stencil sheet consisting of a porous substrate and a thermoplastic film adhered to the substrate is provided without no use of an adhesive. The porous substrate comprises a screen cloth wholly or partially consisting of conjugate fibers (a sheath-core type or a side-by-side type) one exposed component of which has an affinity with the thermoplastic resin film and having a melting point lower than that of the other component of the conjugate fiber and lower than that of the thermoplastic resin, and the screen cloth is adhered to the thermoplastic resin film through the exposed component.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: April 22, 1997
    Assignee: Riso Kagaku Corporation
    Inventors: Shoichi Ikejima, Tetsu Yamanaka, Takeshi Koishihara, Kenichi Shibuya, Satoshi Chonan
  • Heat-sensitive stencil sheets and process
    Patent number: 5498464
    Abstract: A heat-sensitive stencil sheet consisting of a porous substrate and a thermoplastic film adhered to the substrate is provided without no use of an adhesive. The porous substrate comprises a screen cloth wholly or partially consisting of conjugate fibers (a sheath-core type or a side-by-side type) one exposed component of which has an affinity with the thermoplastic resin film and having a melting point lower than that of the other component of the conjugate fiber and lower than that of the thermoplastic resin, and the screen cloth is adhered to the thermoplastic resin film through the exposed component.
    Type: Grant
    Filed: August 25, 1994
    Date of Patent: March 12, 1996
    Assignee: Riso Kagaku Corporation
    Inventors: Shoichi Ikejima, Tetsu Yamanaka, Takeshi Koishihara, Kenichi Shibuya, Satoshi Chonan