Patents by Inventor Tomoyuki Mamiya

Tomoyuki Mamiya 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).

  • Publication number: 20090060422
    Abstract: A one-piece LC type optical fiber adapter is provided. The LC type adapter of the present invention has fewer parts than a conventional one. Therefore, it is simpler and easier to assemble the LC type adapter of the present invention. In addition, the main body of the LC type adapter is unitary thereby avoiding the prior art problem that the stresses cause the two halves of the adapter to separate from each other after time.
    Type: Application
    Filed: August 27, 2008
    Publication date: March 5, 2009
    Applicants: PROTAI PHOTONIC CO. LTD., SENKO ADVANCED COMPONENTS, INC.
    Inventors: I. En LIN, Tomoyuki Mamiya
  • Patent number: 5631992
    Abstract: An optical fiber LED assembly for coupling light from a light source element to an optical fiber via a rod lens with distributed refractive index provides improved stability by controlling deterioration in the optical coupling efficiency of the assembly with a lapse of time. The light source element includes a light emitting element which radiates light through a transparent aperture-covering plate of a can in which it is located. The light source element is supported by a first cylindrical holder. A second cylindrical holder supports a rod lens with distributed refractive index at one end thereof and accepts and supports the distal end of an optical fiber ferrule. The second cylindrical holder is inserted and fixed in the first cylindrical holder, the rod lens with distributed refractive index being directed toward the transparent aperture-covering plate of the light source element.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: May 20, 1997
    Assignee: Seikoh Giken Co., Ltd.
    Inventors: Mitsuo Takahashi, Yuying Wu, Tomoyuki Mamiya
  • Patent number: D572661
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: July 8, 2008
    Assignee: Senko Advanced Components, Inc.
    Inventors: Samuel I. En Lin, Tomoyuki Mamiya