Apparatus for providing a universal interface to a process control system
CA 2024534 C · Owner: Honeywell Inc. · Inventors: Bansal, Ravinder M.; Hahn, Amand J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A plant control system includes a plant control network for performing the overall supervision of a process being controlled. The plant control network has at least one external bus for operatively connecting a corresponding interface apparatus to the plant control network. Further each interface apparatus interfaces with at least one predetermined field device, each field device being a type having a corresponding predetermined signal type. The interface apparatus comprises a controller for controlling the input/output (I/O) of the interface apparatus. At least one I/O module, connected to the controller preprocesses, information signals to and from the predetermined field device connected …
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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 September 4, 1990 and granted July 30, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 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.