Patents by Inventor Keiichiro Hata

Keiichiro Hata 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).

  • Manufacturing device and manufacturing method of optical fiber grating
    Patent number: 10976487
    Abstract: A manufacturing device of an optical fiber grating to write a grating in a core of an optical fiber by irradiating the optical fiber with laser light includes: a fixing device that fixes the optical fiber to at least one of a first position located more on an upstream side and a second position located more on a downstream side in a conveyance direction of the optical fiber than a laser light irradiating position of the optical fiber in a case of writing the grating; and a feeder having a structure capable of linearly reciprocating in the conveyance direction and adapted to feed a predetermined length of the optical fiber in the conveyance direction in a case where a fixed state of the optical fiber by the fixing device is released.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: April 13, 2021
    Assignee: FUJIKURA LTD.
    Inventors: Keiichiro Hata, Kenichi Ohmori
  • MANUFACTURING DEVICE AND MANUFACTURING METHOD OF OPTICAL FIBER GRATING
    Publication number: 20190047239
    Abstract: A manufacturing device of an optical fiber grating to write a grating in a core of an optical fiber by irradiating the optical fiber with laser light includes: a fixing device that fixes the optical fiber to at least one of a first position located more on an upstream side and a second position located more on a downstream side in a conveyance direction of the optical fiber than a laser light irradiating position of the optical fiber in a case of writing the grating; and a feeder having a structure capable of linearly reciprocating in the conveyance direction and adapted to feed a predetermined length of the optical fiber in the conveyance direction in a case where a fixed state of the optical fiber by the fixing device is released.
    Type: Application
    Filed: December 15, 2016
    Publication date: February 14, 2019
    Applicant: Fujikura Ltd.
    Inventors: Keiichiro Hata, Kenichi Ohmori