Non-azeotropic refrigerant mixtures containing r23, r152a and r125
CA 2086230 A1 · Owner: Sami, Samuel M. · Inventors: Sami, Samuel M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A substantially chlorine-free non-azeotropic refrigerant mixture is provided for use in heat pumps which provides improved efficiency in terms of coefficient of, performance and compressor power than available refrigerants or mixtures thereof. The refrigerant is a ternary mixture of 1% to 30% R23 1% to 25% R152a, with the, balance being R125. The mixture can be used in heat pumps and other machines designed for R22 without modification, and is environmentally acceptable.
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 7, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 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.