Master/slave system and its control program executing method
CA 2022090 C · Owner: Kabushiki Kaisha Toshiba · Inventors: Yasuda, Susumu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A master/slave system which comprises an electronic exchange as a master device and various sorts of terminal units as slave devices connected to the electronic exchange. In the system whenever one, of the slave devices is started a program for managing, and controlling the started slave device is supplied from the master device to the started slave device thus realizing always suitable management and control over the started slave device. In the case where a common control program describing only a common control procedure to the slave devices is previously stored in the master device and unique control programs describing unique control procedures to the slave device having different …
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 27, 1990 and granted August 13, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 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.