Patents by Inventor Osamu Higashida

Osamu Higashida 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: 9638979
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive substrates; and a light control layer sandwiched between the two transparent electroconductive substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the concentration of the light control suspension in the vicinity of each of the transparent electroconductive substrates is smaller than that of the light control suspension in the middle in the thickness direction of the light control layer.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: May 2, 2017
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Osamu Higashida, Michio Ogawa
  • Patent number: 8098419
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive resin substrates; and a light control layer sandwiched by the two transparent electroconductive resin substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the thickness of the transparent electroconductive resin substrates is from 130 to 500 ?m.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: January 17, 2012
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Osamu Higashida, Hitoshi Yamazaki
  • Patent number: 8059331
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive resin substrates; and a light control layer sandwiched by the two transparent electroconductive resin substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the thickness of the transparent electroconductive resin substrates is from 10 to 80 ?m.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: November 15, 2011
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Osamu Higashida, Hitoshi Yamazaki, Shigeshi Ohno
  • Publication number: 20100047593
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive substrates; and a light control layer sandwiched between the two transparent electroconductive substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the concentration of the light control suspension in the vicinity of each of the transparent electroconductive substrates is smaller than that of the light control suspension in the middle in the thickness direction of the light control layer.
    Type: Application
    Filed: December 21, 2007
    Publication date: February 25, 2010
    Inventors: Osamu Higashida, Michio Ogawa
  • Publication number: 20100014150
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive resin substrates; and a light control layer sandwiched by the two transparent electroconductive resin substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the thickness of the transparent electroconductive resin substrates is from 10 to 80 ?m.
    Type: Application
    Filed: December 21, 2007
    Publication date: January 21, 2010
    Inventors: Osamu Higashida, Hitoshi Yamazaki, Shigeshi Ohno
  • Publication number: 20090316254
    Abstract: The present invention relates to a light control film, comprising: two transparent electroconductive resin substrates; and a light control layer sandwiched by the two transparent electroconductive resin substrates, wherein the light control layer contains a resin matrix and a light control suspension dispersed in the resin matrix, and the thickness of the transparent electroconductive resin substrates is from 130 to 500 ?m.
    Type: Application
    Filed: December 21, 2007
    Publication date: December 24, 2009
    Inventors: Osamu Higashida, Hitoshi Yamazaki
  • Patent number: 4985328
    Abstract: A dry toner composition comprising (A) a binder resin, (B) a colorant and (C) charge control agents comprising a special metal complex of oxycarboxylic acid (C-1) and a special metal complex of azo compound (C-2) can provide high quality images without causing toner flying even after printed for a long period of time, and thus is useful for providing a dry developer and a process for forming images using said dry developer.
    Type: Grant
    Filed: September 21, 1989
    Date of Patent: January 15, 1991
    Assignee: Hitachi Chemical Co., Ltd.
    Inventors: Yuugo Kumagai, Ryouji Tan, Takashi Ikeda, Tetsuya Fujii, Chiaki Okada, Osamu Higashida, Hatuo Sugitani, Masato Fukasawa
  • Patent number: 4404270
    Abstract: A toner comprising a resin, a colorant and a positive charge control agent selected from the group consisting of mica, monoalkyl and dialkyl tin oxides and urethane compounds, said charge control agent having high positive charging ability and good dispersibility in the resin, can be used for developing to give good quality images, having high density in the image areas and low background in the non-image areas.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: September 13, 1983
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Osamu Higashida, Isamu Moribe, Hajime Yamamoto