Method and apparatus for optimizing repeated communications in a multiplexer network
CA 2479131 C · Owner: Fisher Controls International Llc · Inventors: Jackson, Alfred Russell, Iii
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for optimizing multiplexer communications in a system having a host, a multiplexer, and a field instrument device. The host is arranged to run a host software and to transmit a message to the multiplexer the message , including an embedded message for the instrument device. The host re-transmits the message until a response to the message is received from the device via the multiplexer, with the first re-transmission occurring after a long delay and a second and all subsequent re-transmissions occurring after a second time interval. An optimizing controller is arranged to establish a count indicating the number of re-transmissions occurring before the response has been …
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 January 13, 2003 and granted December 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2025.
- 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.