Patents by Inventor Keiko Toyozawa

Keiko Toyozawa 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: 8597475
    Abstract: A transparent conductive laminate having a completely crystallized, transparent conductive layer on a substrate comprising an organic polymer molding, and a process for producing the same. The transparent conductive layer is excellent in transparency and wet heat confidence and is not excessively low in specific resistivity. The transparent conductive laminate includes a substrate comprising an organic polymer molding having formed thereon a completely crystallized, transparent conductive layer comprising an In.Sn composite oxide having an amount of Sn atom of 1 to 6% by weight based on the total weight of In atom and Sn atom and having a film thickness of 15 to 50 nm, a Hall mobility of 30 to 45 cm2/V·S, and a carrier density of from 2×1020/cm3 to 6×1020/cm3.
    Type: Grant
    Filed: April 8, 2005
    Date of Patent: December 3, 2013
    Assignee: Nitto Denko Corporation
    Inventors: Kazuaki Sasa, Kazunori Kawamura, Keiko Toyozawa, Tomohiko Maeda
  • Publication number: 20050244620
    Abstract: A wired circuit board which is formed so that even when a wired circuit pattern is formed at a fine pitch and then a tin plating layer is formed on the wired circuit pattern by the electroless tin plating, a wiring of the wired circuit pattern can be prevented from being stripped, and a production method of the same wired circuit board. After a thin metal film 2 formed of nickel-chromium alloy having a chromium content of 8-20 weight % is formed on an insulating layer 1, a wired circuit pattern 4 of copper is formed on the thin metal film 2. Then, a tin plating layer 5 is formed on exposed surfaces of the wired circuit pattern 4 by electroless tin plating.
    Type: Application
    Filed: April 19, 2005
    Publication date: November 3, 2005
    Applicant: Nitto Denko Corporation
    Inventors: Makoto Tsunekawa, Kei Nakamura, Keiko Toyozawa, Takeshi Yamato, Toshikazu Baba
  • Publication number: 20050173706
    Abstract: A transparent conductive laminate having a completely crystallized, transparent conductive layer on a substrate comprising an organic polymer molding, and a process for producing the same. The transparent conductive layer is excellent in transparency and wet heat confidence and is not excessively low in specific resistivity. The transparent conductive laminate includes a substrate comprising an organic polymer molding having formed thereon a completely crystallized, transparent conductive layer comprising an In.Sn composite oxide having an amount of Sn atom of 1 to 6% by weight based on the total weight of In atom and Sn atom and having a film thickness of 15 to 50 nm, a Hall mobility of 30 to 45 cm2/V·S, and a carrier density of from 2×1020/cm3 to 6×1020/cm3.
    Type: Application
    Filed: April 8, 2005
    Publication date: August 11, 2005
    Inventors: Kazuaki Sasa, Kazunori Kawamura, Keiko Toyozawa, Tomohiko Maeda
  • Patent number: 6908666
    Abstract: A transparent conductive laminate having a completely crystallized, transparent conductive layer on a substrate comprising an organic polymer molding, and a process for producing the same. The transparent conductive layer is excellent in transparency and wet heat confidence and is not excessively low in specific resistivity. The transparent conductive laminate includes a substrate comprising an organic polymer molding having formed thereon a completely crystallized, transparent conductive layer comprising an In—Sn composite oxide having an amount of Sn atom of 1 to 6% by weight based on the total weight of In atom and Sn atom and having a film thickness of 15 to 50 nm, a Hall mobility of 30 to 45 cm2/V-S, and a carrier density of from 2×1020/cm3 to 6×1020/cm3.
    Type: Grant
    Filed: April 7, 2003
    Date of Patent: June 21, 2005
    Assignee: Nitto Denko Corporation
    Inventors: Kazuaki Sasa, Kazunori Kawamura, Keiko Toyozawa, Tomohiko Maeda
  • Publication number: 20030194551
    Abstract: A transparent conductive laminate having a completely crystallized, transparent conductive layer on a substrate comprising an organic polymer molding, and a process for producing the same. The transparent conductive layer is excellent in transparency and wet heat confidence and is not excessively low in specific resistivity. The transparent conductive laminate includes a substrate comprising an organic polymer molding having formed thereon a completely crystallized, transparent conductive layer comprising an In.Sn composite oxide having an amount of Sn atom of 1 to 6% by weight based on the total weight of In atom and Sn atom and having a film thickness of 15 to 50 nm, a Hall mobility of 30 to 45 cm2/V·S, and a carrier density of from 2×1020/cm3 to 6×1020/cm3.
    Type: Application
    Filed: April 7, 2003
    Publication date: October 16, 2003
    Applicant: NITTO DENKO CORPORATION
    Inventors: Kazuaki Sasa, Kazunori Kawamura, Keiko Toyozawa, Tomohiko Maeda