Heat transfer fluids
CA 1263524 C · Owner: The Dow Chemical Company · Inventors: Rose, Gene D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a method for controlling the overall heat transfer coefficient of a heat transfer fluid. The method is characterized by (A) providing (1) a surfactant compound having a hydrophobic moiety chemically bonded to an ionic hydrophilic moiety and (2) an amount of an electrolyte having a moiety that is capable of associating with the surfactant ion to form a viscoelastic surfactant wherein said surfactant compound and said amount of electrolyte provide the desired heat transfer fluid; (B) preparing a viscoelastic surfactant composition by admixing (1) and (2) of step (A); and (C) incorporating into the heat transfer fluid the viscoelastic surfactant composition …
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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
- Granted December 5, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 5, 2006.
- 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.