Patents by Inventor Atsuyoshi Seno

Atsuyoshi Seno 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 FIBER
    Publication number: 20110059236
    Abstract: The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4×10?3 mole equivalent or less in 1 g of the material. The optical fiber is characterized in that the UV curable resin includes urethane acrylate, a polyisocyanate component in the urethane acrylate is an aromatic polyisocyanate, and tolylene diisocyanate is used as the aromatic polyisocyanate.
    Type: Application
    Filed: August 13, 2010
    Publication date: March 10, 2011
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Keisuke UI, Atsuyoshi Seno, Tetsuo Sato
  • Unit Optical Fiber
    Publication number: 20090123749
    Abstract: The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4×10?3 mole equivalent or less in 1 g of the material. The optical fiber is characterized in that the UV curable resin includes urethane acrylate, a polyisocyanate component in the urethane acrylate is an aromatic polyisocyanate, and tolylene diisocyanate is used as the aromatic polyisocyanate.
    Type: Application
    Filed: March 23, 2007
    Publication date: May 14, 2009
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Keisuke Ui, Atsuyoshi Seno, Tetsuo Sato