Method and apparatus for controlling an air conditioner with a solar cell
CA 2096458 C · Owner: Sanyo Electric Co. Ltd. · Inventors: Onizuka, Keigo; Sasaki, Shigeharu; Tokizaki, Hisashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A DC power supply bus is used.to connect a solar cell to an outdoor unit of air conditioners. The output voltage of each outdoor unit is so controlled as to maximize the power generation efficiency of the solar cell and the DC power supplid to the air conditioner is regulated to predetermined value.
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 May 18, 1993 and granted January 14, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 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.