Patents by Inventor Rokuro Watanabe

Rokuro Watanabe 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).

  • Patent number: 6693699
    Abstract: A method for repairing a liquid crystal display provided with a light transmitting member having an image display section. The method includes filling a filler, which has a refractive index substantially equal to that of the light transmitting member, into a scratch or scratches formed on inside and outside surfaces of the light transmitting member so as to repair the scratch or scratches.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: February 17, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Inoue, Shigenobu Maruyama, Toshio Asano, Susumu Aiuchi, Takeo Sawaguchi, Rokuro Watanabe
  • Patent number: 6552771
    Abstract: An image display device for repairing a scratch or scratches on a surface or surfaces of a light transmitting member having an image display section such an extent that the presence of the scratch or scratches cannot be visually perceived at at least in a bright view distance in all directions, and in which device a liquid filler having a refractive index equivalent to or on the same order of that of the light transmitting member is locally filled only into an area of the scratch or scratches, and the filler is cured. By controlling an amount of the filler so that a difference in level between a surface of the light transmitting member and a surface of the filler is at least ±5.0 &mgr;m or less and that an angle defined between a surface of the filler and a surface of the light transmitting member is at least 45 degrees or less or preferably at least 10 degrees or less, it is possible to exhibit display quality to such a degree that the presence of the scratch or scratches cannot be recognized.
    Type: Grant
    Filed: December 16, 1999
    Date of Patent: April 22, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Inoue, Shigenobu Maruyama, Toshio Asano, Susumu Aiuchi, Takeo Sawaguchi, Rokuro Watanabe
  • Publication number: 20030002008
    Abstract: A method for repairing a liquid crystal display provided with a light transmitting member having an image display section. The method includes filling a filler, which has a refractive index substantially equal to that of the light transmitting member, into a scratch or scratches formed on inside and outside surfaces of the light transmitting member so as to repair the scratch or scratches.
    Type: Application
    Filed: September 6, 2002
    Publication date: January 2, 2003
    Inventors: Takashi Inoue, Shigenobu Maruyama, Toshio Asano, Susumu Aiuchi, Takeo Sawaguchi, Rokuro Watanabe
  • Patent number: 4224093
    Abstract: A method for producing liquid crystal cells is disclosed, in which a pair of large-area glass substrates are put together, opposite to each other and spaced a small distance apart from each other to form integrally a plurality of liquid crystal cells between the substrates, and by splitting the glass substrate assembly, the individual cells are separated from one another. Each of the glass substrates, which have the same structure, has first regions to serve as upper substrate sections and second regions to serve as lower substrate sections disposed alternately thereon and predetermined electrodes are formed on the first and the second regions. The two glass substrates are disposed face to face with each other in such a manner that the first and the second regions of one substrate are opposite to the second and the first regions of the other substrate.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: September 23, 1980
    Assignee: Hitachi, Ltd.
    Inventors: Masaharu Kohyama, Tadashi Ishibashi, Rokuro Watanabe