A method and device for waveguide connection
CA 2250247 A1 · Owner: Ohman, Ove · Inventors: Larsson, Olle; Ohman, Ove; Palmskog, Goran
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Replicated polymeric microstructures have been used in the fabrication of optofibre waveguide connections, with the intention of simplifying the production of such connections, and therewith greatly reduce manufacturing costs. Fabrication is commenced from a silicon chip in which there have been etched grooves whose cross-sectional shape has been adapted to accommodate waveguides, such as optofibres. Firstly the silicon chip is replicated by , plating the silicon chip with nickel for instance. The replication then , serves as a model for producing a plastic copy of the silicon chip. This method of manufacture is able to produce waveguide accommodating grooves (2) such as optofibre …
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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 March 20, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 20, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 20, 2019.
- 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
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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.