Refrigerant composition
CA 2575691 C · Owner: Rpl Holdings Limited · Inventors: Poole, John Edward; Powell, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A refrigerant composition consists essentially of a combination of a hydroflurocarbon component consisting of a combination selected from the following mixtures: (a) R134a and R125; (b) R134a R125 and R143a (c) R125 and , R143a (d) R134a R227ea and R125 and a hydrocarbon component consisting essentially of a combination selected from the following mixtures: (e) isopentane and butane (f) isopentane, butane and ispobutane (g) butane and isobutane.
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 28, 2005 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 28, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.