Patents by Inventor Keinichiro Itoh

Keinichiro Itoh 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).

  • Apparatus for fusion-splicing a pair of polarization maintaining optical fibers
    Patent number: 5156663
    Abstract: An apparatus for fushion splicing optical fiber with three pairs at clamps; the outermost pair of clamps has one rotatable clamp mechanism that is manually operated and a second rotatable clamp mechanism that is operated by a motor. A rapid fine adjustment of the alignment of the polarization maintaining optical fibers can be made.
    Type: Grant
    Filed: April 16, 1991
    Date of Patent: October 20, 1992
    Assignees: Fujikura Ltd., Nippon Telegraph & Telephone Corporation
    Inventors: Keinichiro Itoh, Takeshi Yamada, Tsutomu Onodera, Mikio Yoshinuma, Yasuyuki Kato