Patents by Inventor Mitsuhiko Tsuji

Mitsuhiko Tsuji 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).

  • Method for producing polarizer, polarizer, polarizing plate, optical film, and image display device
    Patent number: 9138947
    Abstract: A method for producing a polarizer of the present invention includes: subjecting a polyvinyl alcohol film to at least a dyeing process, a crosslinking process and a stretching process, then subjecting the film, in which all of the processes have been performed, having a water content of 25 to 55% by weight to a drying process, wherein in the drying process, the water content of the film is reduced by at least 15% by weight, so that the film has a water content of 5 to 35% by weight, and the drying process has a quick drying stage in which the water content of the film is reduced by at least 10% by weight in a time period of ½ to 1/30 of the total drying time of the drying process. The polarizer obtained by the production method has durability and has good optical properties over a wide band.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: September 22, 2015
    Assignee: NITTO DENKO CORPORATION
    Inventors: Kiyoe Shigetomi, Kazunori Futamura, Daisuke Ogomi, Tetsurou Takeda, Akinori Nishimura, Mitsuhiko Tsuji, Kenrou Murate
  • METHOD FOR PRODUCING POLARIZER, POLARIZER, POLARIZING PLATE, OPTICAL FILM, AND IMAGE DISPLAY DEVICE
    Publication number: 20100245727
    Abstract: A method for producing a polarizer of the present invention includes: subjecting a polyvinyl alcohol film to at least a dyeing process, a crosslinking process and a stretching process, then subjecting the film, in which all of the processes have been performed, having a water content of 25 to 55% by weight to a drying process, wherein in the drying process, the water content of the film is reduced by at least 15% by weight, so that the film has a water content of 5 to 35% by weight, and the drying process has a quick drying stage in which the water content of the film is reduced by at least 10% by weight in a time period of ½ to 1/30 of the total drying time of the drying process. The polarizer obtained by the production method has durability and has good optical properties over a wide band.
    Type: Application
    Filed: December 4, 2008
    Publication date: September 30, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kiyoe Shigetomi, Kazunori Futamura, Daisuke Ogomi, Tetsurou Takeda, Akinori Nishimura, Mitsuhiko Tsuji, Kenrou Murate
  • Method for producing masticated rubber
    Patent number: 7629435
    Abstract: A method for producing a masticated rubber, which comprises the steps of masticating rubber at a shear rate of from 500 to 4,500 (l/s); and obtaining masticated rubber having a weight-average molecular weight of from 100,000 to 1,300,000.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: December 8, 2009
    Assignee: Nitto Denko Corporation
    Inventors: Tomoo Yamaguchi, Mitsuhiko Tsuji, Yasunobu Ina
  • Method for producing masticated rubber
    Publication number: 20050119452
    Abstract: A method for producing a masticated rubber, which comprises the steps of masticating rubber at a shear rate of from 500 to 4,500 (l/s); and obtaining masticated rubber having a weight-average molecular weight of from 100,000 to 1,300,000.
    Type: Application
    Filed: November 30, 2004
    Publication date: June 2, 2005
    Inventors: Tomoo Yamaguchi, Mitsuhiko Tsuji, Yasunobu Ina