Patents by Inventor Miko Ikenishi

Miko Ikenishi 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).

  • Optical glass, preform for press forming, optical element, and processes for producing these
    Patent number: 8728962
    Abstract: Provided is a low-dispersion optical glass that is formed of a fluorophosphate glass in which the molar ratio of the content of O2? to the content of P5+, O2?/P5+, is 3.5 or more and that has an Abbe's number (?d) of over 70 or has an F? content of 65 anionic % or more, and the optical glass enables the suppression of the volatilization of a glass component when an optical glass formed of a fluorophosphate glass is produced or when an obtained glass in a molten state is caused to flow out to shape it into a glass shaped material, so that the variation of properties such as a refractive index, etc., involved in the fluctuations of a glass composition and the variation of quality such as the occurrence of striae can be suppressed.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: May 20, 2014
    Assignee: Hoya Corporation
    Inventor: Miko Ikenishi