Granted Patent
Utility
US 4,396,645 · App. 06/305,244
Coated optical glass fibers and method for production thereof
Inventors:
Takao Kimura, Nobuo Inagaki, Mitsuo Yoshihara, Fumihiko Kato
Patented Case
View Patent ↗
Granted: Aug 2, 1983
Filed: Sep 24, 1981
Inventors
Takao Kimura
Nobuo Inagaki
Mitsuo Yoshihara
Fumihiko Kato
Assignees (at issue)
Nippon Telegraph and Telephone Public Corporation
Nitto Electric Industrial Co., Ltd.
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.