Patents by Inventor Kazunori Ishikura

Kazunori Ishikura 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).

  • Method for manufacturing optical disc and optical disc
    Patent number: 7833378
    Abstract: A method of manufacturing an optical disc includes molding a first disc substrate by a first mold simultaneously with a second disc substrate by a second mold while controlling the temperature of the first and second molds by passing a temperature-controlling medium through temperature controlling flow passages provided in the vicinity of a boundary between the first and second molds.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: November 16, 2010
    Assignees: Taiyo Yuden Co., Ltd., Nissei Plastic Industrial Co., Ltd.
    Inventors: Kazunori Ishikura, Keiichi Kagawa, Izumi Igawa, Hidetoshi Egawa, Yuji Shibuya, Shinji Miki, Kiyoto Takizawa
  • METHOD FOR MANUFACTURING OPTICAL DISC AND OPTICAL DISC
    Publication number: 20080057259
    Abstract: A method of manufacturing an optical disc includes molding a first disc substrate by a first mold simultaneously with a second disc substrate by a second mold while controlling the temperature of the first and second molds by passing a temperature-controlling medium through temperature controlling flow passages provided in the vicinity of a boundary between the first and second molds.
    Type: Application
    Filed: October 25, 2007
    Publication date: March 6, 2008
    Inventors: Kazunori ISHIKURA, Keiichi KAGAWA, Izumi IGAWA, Hidetoshi EGAWA, Yuji SHIBUYA, Shinji MIKI, Kiyoto TAKIZAWA
  • Device for manufacturing optical disc, method of manufacturing the same, and optical disc
    Patent number: 7303381
    Abstract: In an optical disc molding device, a heating medium from a low-temperature controller is made to flow in temperature controlling flow passages (passages 3a) formed at locations corresponding to boundary parts of two fixed molds 7 mounted parallel to each other on a fixed platen 3 and in temperature controlling flow passages (passages 6a) formed at locations corresponding to boundary parts of two movable molds 8 mounted parallel to each other on a movable platen 6 to supplement heat exchange.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: December 4, 2007
    Assignees: Taiyo Yuden Co., Ltd., Nissei Plastic Industrial Co. Ltd.
    Inventors: Kazunori Ishikura, Keiichi Kagawa, Izumi Igawa, Hidetoshi Egawa, Yuji Shibuya, Shinji Miki, Kiyoto Takizawa
  • Device for manufacturing optical disc, method of manufacturing the same, and optical disc
    Publication number: 20050244751
    Abstract: In an optical disc molding device, a heating medium from a low-temperature controller is made to flow in temperature controlling flow passages (passages 3a) formed at locations corresponding to boundary parts of two fixed molds 7 mounted parallel to each other on a fixed platen 3 and in temperature controlling flow passages (passages 6a) formed at locations corresponding to boundary parts of two movable molds 8 mounted parallel to each other on a movable platen 6 to supplement heat exchange.
    Type: Application
    Filed: March 29, 2005
    Publication date: November 3, 2005
    Inventors: Kazunori Ishikura, Keiichi Kagawa, Izumi Igawa, Hidetoshi Egawa, Yuji Shibuya, Shinji Miki, Kiyoto Takizawa