Real time process control using multiple communication networks
CA 1321840 C · Owner: Ihrman, Robert T. · Inventors: Houser, Kirk D.; Edblad, Warren A.; Jones, Donald J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communications arrangement for a distributed process control system operable to control an industrial process where different types of data must be communicated between a number of control drops or stations in varying timing priorities includes a first communication channel on which at least two of the control drops are connected. A second communication channel, independent of the first communication channel, accomodates the communication of a type of data that is not as critical in terms of timing as that which is communicated over the first communication channel. All of the control drops are connected to the second communication channel. A control processor, located at each of 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
- Granted August 31, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 31, 2010.
- 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.