Interface chip device
CA 2074073 C · Owner: General Dynamics Land Systems Division · Inventors: Schauss, Craig A.; Bielawski, Dennis A.; Neumann, Donald E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interface chip device (10), provided for use in a time-division multiplex serial data bus system is operable in a proces-, sor interface mode and at least one remote mode wherein the device is capable of directly interfacing with I/O devices such as switches, sensors, converters, etc. The communication protocol of the bus system includes a plurality of commands. An echo message is provided on the data bus in response to the validation signal for each of the commands except for a broadcast command. The remote modes of the chip device include a remote switch mode a data input mode, a data output mode or a combination of the remote modes. The chip device is divided into six main functional …
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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 February 5, 1991 and granted February 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 5, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 5, 2013.
- 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.