Open process control system
CA 2128673 C · Owner: Krishnamurthy, Balachander · Inventors: Krishnamurthy, Balachander; Barghouti, Naser Saleh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Techniques for controlling a process which is performed at least in part by a device such as a computer operating system. The techniques involve a process server which controls the process in response to indications that steps of the process have taken place, an envelope which encloses the device and generates event messages when the device performs operations, and a translator which translates steps of the process into sequences of events and monitors the event messages. When the translator determines that a sequence of events which constitute a process step has occurred it, provides an indication that the step has occurred to the process server. In a preferred embodiment, the device is an …
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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 July 22, 1994 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2016.
- 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.