Granted Patent
Utility
US 4,722,584 · App. 06/714,760
Optical connector ferrule and process for production thereof
Inventors:
Toshiaki Kakii, Koichiro Matsuno, Norio Kashima
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Mar 22, 1985
Inventors
Toshiaki Kakii
Koichiro Matsuno
Norio Kashima
Assignees (at issue)
SUMITOMO ELECTRIC INDUSTRIES, 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.