Solar heat panel
CA 2090244 A1 · Owner: Shi, Shaolin · Inventors: Shih, Ishiang; Shi, Shaolin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention describes an improved solar heat panel for dwellings, factories, schools and barns. The panel includes a thin black aluminum foil solar collector folded in a periodic Y-shape and enclosed in a heat insulating support. A method to self regulate the air flow through the solar heat panel by a solar cell powered motor and a solar cell powered control circuit is provided. A method to obtain uniform distribution of air flow in the solar heat panel is also given.
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 February 24, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 24, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 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.