Optical switch and method of its manufacture
CA 2096181 C · Owner: Saito, Kazuhito · Inventors: Watanabe, Tsutomu; Ozawa, Kazumasa; Sankawa, Izumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an optical switch for selectively coupling optical fibers, the optical switch comprising an optical fiber-arranging member including:, a stationary fiber-fixing portion for receiving and arranging a plurality of first optical fibers each first, optical fiber having an end portion; a stationary fiberintroduction portion having fiber-introduction grooves therein for receiving at least one second optical fiber the, second optical fiber having a distal end portion; and means for inserting longitudinally the second optical fiber into any selected fiber-introduction groove and for conveying longitudinally the second optical fiber distal end along the …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed May 13, 1993 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 13, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.