Fibreoptic switch
CA 2069762 C · Owner: Telefonaktiebolaget Lm Ericsson · Inventors: Sjolinder, Sven Rickard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a fibreoptic switch for enabling one or more of n number of incoming optofibres to be connected selectively with a respective one of m number of outgoing optofibres. According to the invention the switch includes a matrix, block (1) having light transmitting devices (2) which extend in n number of rows and m number of columns between an input side and an output side. On the input side, the incoming optofibres (3) can be displaced linearly along a respective row of the rows of light transmitting devices (2), and the outgoing optofibres (6) on the output side can be displaced linearly along a respective column of the columns of light transmitting devices (2?. …
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 November 22, 1990 and granted February 3, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 22, 2012.
- 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.