Optical isolation apparatus and method
CA 2400846 A1 · Owner: Hill-Rom, Inc. · Inventors: Riley, Carl William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Optical isolation device (10) optically couples and electrically isolates various components on a local source circuit (36) from components on a remote isolated circuit (30). Light source (12) is coupled to opto-electrical detector (16) and opto-electrical sensor (20) is coupled to optical signal generator (18) by optical channel (14). The opto-electrical detector (16) is electrically coupled to remote isolated circuit (30) which is powered by the electricity generated by opto-electrical detector (16) in response to being impinged upon by light (22). Remote isolated circuit (30) is also electrically coupled to optical signal generator (18) which generates optical signals (32) 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 February 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 2023.
- 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.