Patents by Inventor Sadao Yoshizaki

Sadao Yoshizaki 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).

  • Sanding pad containing a heat distortable polymer and sanding process using same
    Patent number: 5759090
    Abstract: A sanding pad (102, 204) comprising a plate-shaped substrate (104, 201) and an abrasive (103, 203) fixed by the use of a fixing means (102, 202) onto a major surface of the substrate (104, 201), and the substrate (104, 201) having a heat distortable polymer which has a dimension-retaining first state within a normal use temperature range of said pad (102, 204) and a deformable state at a temperature above said normal use temperature range. The invention provides an inexpensive sanding pad capable of sanding a three-dimensional curved surface, uniformly and easily, which is superior in repeated usability.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: June 2, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kohichiro Kawate, Hitoshi Furutani, Sadao Yoshizaki, Hiroshi Imai
  • Electrical resistive material
    Patent number: 5227231
    Abstract: An electrical resistive material used for making e.g. a heating element for a thermal printing element. It is a Cr--Al--B--Zr--O alloy and is composed of a quaternary alloy and 15 to 25 at % of oxygen, wherein the quaternary alloy is composed of 2 to 25 at % of zirconium and a ternary alloy containing 35 to 55 at % of chromium, 2 to 23 at % of aluminium and 37 to 58 at % of boron.
    Type: Grant
    Filed: January 3, 1992
    Date of Patent: July 13, 1993
    Assignee: Susumu Co., Ltd.
    Inventors: Sadao Yoshizaki, Kazuya Nishimura, Masami Kawabayashi