Energy management and building automation system
CA 2202129 C · Owner: Speegle, Gary E. · Inventors: Ehlers, Gregory A.; Howerton, Robert D.; Speegle, Gary E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An energy management and building automation system including a local area network or home automation data bus. Each load to be controlled is connected to the bus via a control module. A first microcomputer preferably is place externally to the customer premises, adjacent the electric utility power meter. A second microcomputer preferably is placed inside the customer premises. The two microcomputers communicate with each other and with the various load control modules. The first microcomputer communicates with the utility company via any appropriate communications link. The second microcomputer serves in part, as an input/output terminal for the system, allowing the customer to set …
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 5, 1996 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 2018.
- 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.