Patents by Inventor Yasuhiko Katou

Yasuhiko Katou 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).

  • Multilayer contact lens and production process therefor
    Patent number: 9878473
    Abstract: A method for manufacturing a contact lens having a multilayer structure using a mold, includes: (a) charging a first polymerizing composition into a space formed by combining a first mold with a second mold, and polymerizing a first semi product having a thinner thickness and a smaller outer diameter than those of a contact lens immediately before being removed from the molds after all polymerizing processes; (b) opening the first and second molds; and (c) charging a second polymerizing composition into a space formed by combining a third mold with one of the first and second mold, the first semi product fixed onto the one of the first and second molds, and polymerizing the second polymerizing composition.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: January 30, 2018
    Assignee: MENICON NECT CO., LTD
    Inventor: Yasuhiko Katou
  • MULTILAYER CONTACT LENS AND PRODUCTION PROCESS THEREFOR
    Publication number: 20150137397
    Abstract: A method for manufacturing a contact lens having a multilayer structure using a mold, includes: (a) charging a first polymerizing composition into a space formed by combining a first mold with a second mold, and polymerizing a first semi product having a thinner thickness and a smaller outer diameter than those of a contact lens immediately before being removed from the molds after all polymerizing processes; (b) opening the first and second molds; and (c) charging a second polymerizing composition into a space formed by combining a third mold with one of the first and second mold, the first semi product fixed onto the one of the first and second molds, and polymerizing the second polymerizing composition.
    Type: Application
    Filed: June 17, 2013
    Publication date: May 21, 2015
    Applicant: MENICON NECT CO., LTD.
    Inventor: Yasuhiko Katou