Telephone apparatus using a detachable memory device
CA 2016935 C · Owner: Sato, Hiroshi · Inventors: Sato, Hiroshi; Hoshino, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A telecommunication apparatus adapted to be used with a detachable memory device is disclosed. The detachable memory device such as an IC card are capable of storing information relating to a particular user. When the detachable memory device is connected to the apparatus the, apparatus retrieves information relating to the particular user out of the detachable memory device. Thereafter. the apparatus may perform one or more of functions on the basis of the retrieved information. When the detachable memory device is connected to the telecommunication apparatus. the apparatus detects the presence of identification information stored in the detachable memory device. In the event that the …
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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 May 16, 1990 and granted June 4, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2012.
- 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.