Surge absorber
CA 2060161 A1 · Owner: Itoh, Takaaki · Inventors: Abe, Masatoshi; Ikeda, Fujio; Itoh, Takaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A surge absorber comprises a surge absorbing element used for protecting electronic devices from surge voltages and a thermal response switch for preventing the electronic device from catching fire. The surge absorber of the present invention comprises a surge absorbing element, means for connecting the surge absorbing element to the communication lines of the device and in parallel with the device, and thermally activated means connecting the communication lines and the surge absorbing element which in response to a given, higher temperature disconnects the surge absorbing element from the communication lines, and, in response to another lower, temperature, reconnects the surge absorbing …
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 January 28, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2014.
- 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.