Data communication apparatus and method
CA 2229472 C · Owner: Fukunaga, Koji · Inventors: Suzuki, Naohisa; Fukunaga, Koji; Katano, Kiyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In response to a request from a host device using an initial protocol, capability information including information indicative of a plurality of communication protocols is returned to the host device and a communication protocol, designated by the host device based on the capability information is set, and print data is received from the host device by the set communication protocol. In a system using an interface connected to various types of devices e.g. an IEEE 1394 serial bus, a communication protocol which is used when a host device transfers print data to a printer, is not limited to that unique to the manufacturer of the device.
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 February 11, 1998 and granted April 15, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 11, 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.