Patents by Inventor Yoshifumi Saiki

Yoshifumi Saiki 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).

  • Photosensitive resin composition and color filter comprising a polymer dyeable with an anionic dye, an azide compound and a compound with at least two acrylol groups
    Patent number: 5190845
    Abstract: A photosensitive resin composition comprising:(a) a polymer dyeable with an anionic dye(b) an azide photosensitive compound, and(c) a compound having at least two acryloyl and/or methacryloyl groups in the same molecule thereof, and a color filter obtained by using the resin composition.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: March 2, 1993
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Matsuo Hashimoto, Nobuyuki Futamura, Sumio Yoda, Yoshifumi Saiki
  • Resin compositions and process for forming transparent thin films
    Patent number: 5180794
    Abstract: A resin composition comprising(a) a glycidyl ether of phenol novolak and/or cresol novolak,(b) a phenol novolak and/or cresol novolak,(c) an organic solvent, and(d) a silane coupling agent having an aromatic ring and an amino group having active hydrogen in the same molecule;a process for forming a transparent thin film by using a glycidyl ether of phenol novolak and/or cresol novolak and a phenol novolak and/or cresol novolak, which comprises dissolving said materials in an organic solvent, forming a coat and heat curing it to obtain a transparent thin film, wherein the improvement comprises the use of a silane coupling agent having an aromatic ring and an amino group having active hydrogen in the same molecule as additive; andtransparent thin films formed from the above process.
    Type: Grant
    Filed: July 24, 1990
    Date of Patent: January 19, 1993
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Sumio Yoda, Nobuyuki Futamura, Matsuo Hashimoto, Yoshifumi Saiki