Patents by Inventor Mayumi Kawasaki

Mayumi Kawasaki 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).

  • Highly light-transmitting dust protective film, and dust protective member
    Patent number: 5674624
    Abstract: Disclosed is a highly light-transmitting dust protective film composed of at least one member selected from the group consisting of transparent gels of oxides, hydroxides, organic group-containing oxides and organic group-containing hydroxides of polyvalent metals, formed by the sol-gel process.
    Type: Grant
    Filed: December 17, 1993
    Date of Patent: October 7, 1997
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tetsuya Miyazaki, Mayumi Kawasaki, Takao Ohno
  • Highly light-transmitting dust protective film, process for preparation thereof and dust protective member
    Patent number: 5667726
    Abstract: Disclosed is a highly light-transmitting dust protective film composed of at least one member selected from the group consisting of transparent gels of oxides, hydroxides, organic group-containing oxides and organic group-containing hydroxides of polyvalent metals, formed by the sol-gel process.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: September 16, 1997
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Tetsuya Miyazaki, Mayumi Kawasaki, Takao Ohno