Patents by Inventor Masaru Furusyou

Masaru Furusyou 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 producing method and apparatus and optical fiber
    Patent number: 9475722
    Abstract: An apparatus includes a susceptor and a protective pipe. A gas containing 50% or more of argon or nitrogen is used as a gas to be supplied into the susceptor. The protective pipe has a heat insulating region (17a) enclosed with a heat insulator (18) with a length of Db (mm) at the upper section thereof and a non-heat insulating region (17b) not enclosed with any heat insulators at the lower section thereof. The temperature of the glass fiber at the outlet of the protective pipe becomes 1700° C. or less. The outer diameter of the glass fiber at the outlet of the protective pipe is within a range of the target outer diameter of the glass fiber+6 ?m or less.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: October 25, 2016
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Tadashi Enomoto, Iwao Okazaki, Takashi Yamazaki, Masatoshi Hayakawa, Manabu Shiozaki, Norihiro Uenoyama, Masaru Furusyou
  • OPTICAL FIBER PRODUCING METHOD AND APPARATUS AND OPTICAL FIBER
    Publication number: 20140226948
    Abstract: An apparatus includes a susceptor and a protective pipe. A gas containing 50% or more of argon or nitrogen is used as a gas to be supplied into the susceptor. The protective pipe has a heat insulating region (17a) enclosed with a heat insulator (18) with a length of Db (mm) at the upper section thereof and a non-heat insulating region (17b) not enclosed with any heat insulators at the lower section thereof. The temperature of the glass fiber at the outlet of the protective pipe becomes 1700° C. or less. The outer diameter of the glass fiber at the outlet of the protective pipe is within a range of the target outer diameter of the glass fiber+6 ?m or less.
    Type: Application
    Filed: January 9, 2013
    Publication date: August 14, 2014
    Inventors: Tadashi Enomoto, Iwao Okazaki, Takashi Yamazaki, Masatoshi Hayakawa, Manabu Shiozaki, Norihiro Uenoyama, Masaru Furusyou