Optical coupling device
CA 2379579 A1 · Owner: Kossat, Rainer · Inventors: Kossat, Rainer; Schweiker, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an optical coupling device for coupling light between two optical waveguide end surfaces, whereby the geometrical position of one of the optical waveguide end surfaces relative to the other optical waveguide end surface can be changed with the aid of a variable-length element. Said element supports one of the two optical waveguides and is fixed to the other optical waveguide by means of holding blocks. The variable-length element or the holding device is retained by a spring element that is directly or indirectly supported on at least one of the holding blocks. Said spring element enables movement of the variable-length element or the holding device in …
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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 July 21, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 21, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2022.
- 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.