Current limiter with low drop voltage for surge protection and fuse protection
CA 2374795 A1 · Owner: Siemens Milltronics Process Instruments Inc. · Inventors: Mercier, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A current limiter circuit which exhibits a low dropout voltage. The current limiter circuit is suitable for protecting process control equipment operating on, a current loop. The current limiter circuit includes an interface for coupling to the, current loop, and a current source element coupled to the process control equipment. The current source element comprises a current limiter circuit to limit, the current flowing to the process control equipment and a voltage reference, circuit coupled to the current limiter circuit provides a predetermined voltage, reference during operation of the current source element.
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 March 5, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2024.
- 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.