Granted Patent
Utility
US 5,667,426 · App. 08/535,906
Method of polishing the end face of a ferrule on an optical connector
Inventors:
Kohji Minami, Hiroyuki Tokita, Keiichi Ishiyama, Nobuo Suzuki
Patented Case
View Patent ↗
Granted: Sep 16, 1997
Filed: Sep 28, 1995
Inventors
Kohji Minami
Hiroyuki Tokita
Keiichi Ishiyama
Nobuo Suzuki
Assignee (at issue)
SEIKO INSTRUMENTS INC.
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.