Data circuit-terminating equipment with power source device attached thereto
CA 2001472 C · Owner: Kuroda, Takashi · Inventors: Kuroda, Takashi; Sakuragi, Satoshi; Ikeda, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data circuit-terminating equipment with a power source device attached thereto comprising a data circuitterminating equipment such as a modem and a power source device attached thereto for supplying a power extracted from a telephone circuit to the data circuit-terminating equipment.
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 October 25, 1989 and granted March 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2011.
- 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.