Patents by Inventor Hiroko Yokouchi

Hiroko Yokouchi 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).

  • Cellulose ester film, protective film for a polarizing plate of liquid crystal display and production method of cellulose ester film
    Patent number: 6828006
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.05 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Grant
    Filed: September 25, 2003
    Date of Patent: December 7, 2004
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibana
  • Cellulose ester film, protective film for a polarizing plate of liquid crystal display and production method of cellulose ester film
    Publication number: 20040058180
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.05 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Application
    Filed: September 25, 2003
    Publication date: March 25, 2004
    Applicant: KONICA CORPORATION
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibaba
  • Cellulose ester film, protective film for a polarizing plate of liquid crystal display and production method of cellulose ester film
    Patent number: 6652926
    Abstract: A film for a liquid crystal display. The film is a cellulose ester film with a thickness between 20 and 65 &mgr;m and containing fine particles. The average diameter of fine particles is 0.005 to 3.0 &mgr;m. The number of fine particles per 1,000 &mgr;m2 is 5 to 500 in the cross-section perpendicular to the cellulose ester film in a region of a depth of not more than 10 &mgr;m.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: November 25, 2003
    Assignee: Konica Corporation
    Inventors: Masahito Takada, Isamu Michihata, Kouichi Saito, Hiroko Yokouchi, Noriki Tachibana