Patents by Inventor Takeshi Ishimine

Takeshi Ishimine 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).

  • Press-molding glass material, method of manufacturing press-molding glass material, and method of manufacturing optical element
    Patent number: 8993115
    Abstract: An aspect of the present invention relates to a press-molding glass material, which comprises a core part comprised of optical glass and a silicon oxide film of less than 15 nm in thickness covering at least a portion of the core part, the portion being to be an optically functional surface, as well as has a surface free energy as measured by a three-liquid method of equal to or lower than 75 mJ/m2. A further aspect of the present invention relates to a method of manufacturing a press-molding glass material comprising a core part comprised of optical glass and a silicon oxide film covering at least a portion of the core part to be an optically functional surface.
    Type: Grant
    Filed: December 16, 2010
    Date of Patent: March 31, 2015
    Assignee: Hoya Corporation
    Inventors: Takashi Igari, Takeshi Ishimine
  • PRESS-MOLDING GLASS MATERIAL, METHOD OF MANUFACTURING PRESS MOLDING GLASS MATERIAL, AND METHOD OF MANUFACTURING OPTICAL ELEMENT
    Publication number: 20120177914
    Abstract: An aspect of the present invention relates to a press-molding glass material, which comprises a core part comprised of optical glass and a silicon oxide film of less than 15 nm in thickness covering at least a portion of the core part, the portion being to be an optically functional surface, as well as has a surface free energy as measured by a three-liquid method of equal to or lower than 75 mJ/m2. A further aspect of the present invention relates to a method of manufacturing a press-molding glass material comprising a core part comprised of optical glass and a silicon oxide film covering at least a portion of the core part to be an optically functional surface.
    Type: Application
    Filed: December 16, 2010
    Publication date: July 12, 2012
    Applicant: HOYA CORPORATION
    Inventors: Takashi Igari, Takeshi Ishimine