Patents by Inventor Hisashi IKAWA

Hisashi IKAWA 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).

  • Spectacle lens manufacturing system
    Patent number: 10688739
    Abstract: A spectacle lens manufacturing system includes resin material filling means which fills a lens mold with a lens material (heat-curable resin material), the lens mold includes a rear lens mold having a front surface that defines a rear surface of a spectacle lens, the rear lens mold has a rear lens mold base body, a three-dimensional printer which adds a aspherical surface addition portion to a front surface of the rear lens mold base body is provided, and a front surface of the rear lens mold is the front surface of the rear lens mold base body, to which the aspherical surface addition portion is added.
    Type: Grant
    Filed: December 28, 2017
    Date of Patent: June 23, 2020
    Assignee: Tokai Optical Co., Ltd.
    Inventors: Hiroaki Watanabe, Atsushi Nagao, Hisashi Ikawa, Shingo Ono, Hiroshi Ueno
  • SPECTACLE LENS MANUFACTURING SYSTEM
    Publication number: 20180133987
    Abstract: A spectacle lens manufacturing system includes resin material filling means which fills a lens mold with a lens material (heat-curable resin material), the lens mold includes a rear lens mold having a front surface that defines a rear surface of a spectacle lens, the rear lens mold has a rear lens mold base body, a three-dimensional printer which adds a aspherical surface addition portion to a front surface of the rear lens mold base body is provided, and a front surface of the rear lens mold is the front surface of the rear lens mold base body, to which the aspherical surface addition portion is added.
    Type: Application
    Filed: December 28, 2017
    Publication date: May 17, 2018
    Applicant: TOKAI OPTICAL CO., LTD.
    Inventors: Hiroaki WATANABE, Atsushi NAGAO, Hisashi IKAWA, Shingo ONO, Hiroshi UENO