System for transmitting messages via a low-voltage power supply network and adapter
CA 2337851 A1 · Owner: Widmer, Hanspeter · Inventors: Widmer, Hanspeter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a personal computer (10) which is connected to a low-, voltage power supply network (9) via a mains plug (11) and a mains socket (12) into which said plug is inserted, and which via said low-voltage power supply network exchanges messages with other apparatus by means of signals having a frequency of between 1 and 40 MHz. To suppress high-frequency interference signals which are generated by other apparatus connected to the low-voltage power supply network (9) via mains plugs (11') and other mains sockets (12') positioned near the above mains socket (12) or which are produced by signal reflexions at open line ends, an adapter (1) is interconnected which is …
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 July 14, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 14, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2021.
- 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.