Granted Patent
Utility
US 4,679,899 · App. 06/706,574
Optical fiber
Inventors:
Toshiaki Kobayashi, Kazuo Sanada, Toshiaki Murayama, Yasuyuki Sugawara, Naoshi Uesugi
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: Feb 28, 1985
Inventors
Toshiaki Kobayashi
Kazuo Sanada
Toshiaki Murayama
Yasuyuki Sugawara
Naoshi Uesugi
Assignees (at issue)
Fujikura Ltd.
Nippon Telegraph and Telephone Public Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.