Patents by Inventor Masaaki Morisawa

Masaaki Morisawa 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).

  • Method for producing silica glass optical fiber with carbon coating
    Patent number: 5354348
    Abstract: A method for producing a silica glass optical fiber, which comprises coating carbon on the optical fiber with the use of the remaining heat of not less than 800.degree. C. possessed by the optical fiber just after heat wire drawing, for thermal decomposition of a carbon coat-forming gas comprised of one or more members selected from the group of halogenated hydrocarbons, hydrocarbons, and halogen molecules, which has 5 to 15 hydrogen atoms per 10 halogen atoms, and a reaction apparatus for coating carbon, wherein the area of the outer end of an exhaust region is greater than the transverse sectional area of a coating region, and the outer end is outwardly opened.
    Type: Grant
    Filed: July 14, 1992
    Date of Patent: October 11, 1994
    Assignee: Mitsubishi Cable Industries, Ltd.
    Inventors: Toshihiro Zushi, Shigeru Nakahara, Tetsuya Takeda, Nobusada Nagae, Masaaki Morisawa, Tamotsu Kaide, Hiroyuki Tanaka