Data communication device and data communication method
CA 2276775 C · Owner: Higuchi, Takafumi · Inventors: Higuchi, Takafumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Control information on the modem for each address is stored. At the time of communication, the modem used is operated in accordance with the stored control information and a pre-communication procedure is simplified to transmit data. If the simplified pre-communication procedure does not progress normally, the procedure is changed to a second communication procedure with a slower speed after a predetermined lapse of time to continue the communication. If abnormality occurs after the simplified pre-communication procedure, the control information stored in a memory means are erased/updated. Therefore, the time for the pre-communication procedure is shortened and, further, 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 November 5, 1998 and granted October 2, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2020.
- 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.