Interface for providing multiple computer systems access to a process control system
CA 2093469 A1 · Owner: Honeywell Inc. · Inventors: Kish, Karl S.; Heim, Thomas W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interface apparatus which provides communications between a process control system and a computer system comprises a first processor, a second processor and a, memory unit divided into two portions memory A and memory, B. The first processor is of a type compatible with processors utilized in modules of the process control system, the modules being connected to a first network and communicating to each other via a first protocol. The second processor is of a type compatible with processors utilized by computers of the computer system the computers, being connected to a second network and communicating to each other via a second protocol. The first processor is connected to the first …
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 April 6, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 2015.
- 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.