Patents by Inventor Satoshi Tatsuura

Satoshi Tatsuura 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).

  • Nonlinear optical material, process of production of same, and nonlinear optical device and directional coupling type optical switch using same
    Patent number: 5459232
    Abstract: A nonlinear optical material composed of a polyimide obtained from a diamine and/or a diacid anhydride or dithioacid anhydride substituted by a portion having a nonlinear optical effect or of molecules having a benzocyclobutene structure substituted at the portions having an nonlinear linear optical effect.
    Type: Grant
    Filed: July 9, 1993
    Date of Patent: October 17, 1995
    Assignee: Fujitsu Limited
    Inventors: Wataru Sotoyama, Satoshi Tatsuura, Tetsuzo Yoshimura, Azuma Matsuura, Tomoaki Hayano
  • Organic functional optical thin film, fabrication and use thereof
    Patent number: 5444811
    Abstract: An organic functional thin film is comprised of a polymer of a molecule having two or more identical or different groups selected from the group consisting of a carbonyloxycarbonyl group, a carboxylic acid group, a carboxylic acid halide group, a carboxyl group, a --COCl group, an --NCO group, a --CHO group and an epoxy group and a molecule having two or more identical or different groups selected from the group consisting of an amino group, groups containing at least one amino proton, an alkylamino group, a silylated alkylamino group, a carboxylic acid group and a hydroxyl group, formed by vapor-phase deposition, the polymer-forming molecules having at least partially one or more donor and/or acceptor groups. Similar organic thin films are also disclosed. These organic thin films are useful for various electronic applications.
    Type: Grant
    Filed: March 26, 1992
    Date of Patent: August 22, 1995
    Assignee: Fujitsu Limited
    Inventors: Tetsuzo Yoshimura, Ei Yano, Satoshi Tatsuura, Wataru Sotoyama