Patents by Inventor Keisuke Ishiwata

Keisuke Ishiwata 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).

  • Polarizer and image display device
    Patent number: 11921369
    Abstract: An object of the present invention is to provide a polarizer having a high degree of alignment and an image display device including the polarizer. A polarizer of the present invention is a polarizer formed of a polarizer-forming composition containing a liquid crystal compound, a first dichroic material, and a second dichroic material, in which the polarizer has an array structure formed of the first dichroic material and the second dichroic material.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 5, 2024
    Assignee: FUJIFILM Corporation
    Inventors: Wataru Hoshino, Yoshiaki Takada, Yuzo Fujiki, Kengo Saito, Yasuhiro Ishiwata, Takashi Katou, Keisuke Ushirogata
  • Bi-CMOS circuits with enhanced power supply noise suppression and enhanced speed
    Patent number: 5754061
    Abstract: A Bi-CMOS circuit includes a first bipolar, a second bipolar transistor and a CMOS control unit for performing switching controls of the first and second bipolar transistors on the basis of an input signal applied to an input terminal and for controlling an output signal output via the output terminal on the basis of the input signal. A turn-OFF unit temporality couples the base of the first bipolar transistor to a low-potential side power supply line on the basis of a current flowing in said control means when the first bipolar transistor is turned OFF, so that the first bipolar transistor can be rapidly turned OFF.
    Type: Grant
    Filed: September 3, 1996
    Date of Patent: May 19, 1998
    Assignee: Fujitsu Limited
    Inventors: Shinzou Satou, Kou Ebihara, Akiyoshi Suzuki, Keisuke Ishiwata, Kouji Miki, Hitoshi Ohmichi, Tamio Miyamura, Masamichi Kamiyama