Patents by Inventor Kouei Igarashi

Kouei Igarashi 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).

  • Near infrared absorbing film, and multi-layered panel comprising the film
    Patent number: 6255031
    Abstract: In a film or panel having excellent near-infrared absorbability and excellent near-infrared shieldability, and having a high degree of visible ray transmittance and good color tone, in order to produce the near-infrared-absorbing film or panel having good color tone while the near-infrared-absorbing dye disposed therein is kept stable, the dye and the binder resin for the dye are specifically selected, and the production method is also specifically selected. In addition, for the purpose of producing the film or panel while the dye disposed therein is kept stable and for the purpose of making the film or panel have additional functions such as electromagnetic radiation absorbability, the film or panel is made to have a multi-layered structure.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: July 3, 2001
    Assignee: Kanebo, Ltd.
    Inventors: Kenji Yao, Masahiro Koike, Yasuko Suzuki, Kazuo Sakurai, Takashi Indo, Kouei Igarashi
  • Porous ion-exchanged fine cellulose particles, method for production thereof, and affinity carrier
    Patent number: 5196527
    Abstract: This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.
    Type: Grant
    Filed: February 4, 1992
    Date of Patent: March 23, 1993
    Assignee: Kanebo Ltd.
    Inventors: Shigeru Ookuma, Kouei Igarashi, Masami Hara, Kazuhiro Aso, Hideo Yoshidome, Hiroshi Nakayama, Keizo Suzuki, Kazuhiko Nakajima
  • Borous ion-exchanged fine cellulose particles, method for production thereof, and affinity carrier
    Patent number: 5108596
    Abstract: This invention relates to ion-exchanged fine cellulose particles, porous fine cellulose particles which can be advantageously used as an affinity carrier, and methods of production thereof. These fine particles of the invention have the advantage that they possess excellent pressure-resistant strength and can treat treatment liquors under pressure at a high flowing velocity. Thus, they can be advantageously used industrially in various separation and purification processes.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: April 28, 1992
    Assignee: Kanebo Ltd.
    Inventors: Shigeru Ookuma, Kouei Igarashi, Masami Hara, Kazuhiro Aso, Hideo Yoshidome, Hiroshi Nakayama, Keizo Suzuki, Kazuhiko Nakajima