Solvent composition and process employing same
CA 1330337 C · Owner: Air-Cure Environmental, Inc. · Inventors: Ehrler, Arthur James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an operation wherein a gaseous stream such as an air stream, is, contacted with a liquid selective solvent for a component of the gaseous stream for the removal of said component from the gaseous stream impro-, ved results are obtained, particularly in a direct gas-liquid countercurrent contacting operation, by employing a liquid selective solvent which has a viscosity of less than 35 mPa s at 25°C. Suitable such solvents include diethyl phthalate, dioctyl phthalate dioctyl adipate, acetyl-, tributyl citrate and diisohexyl phthalate particularly blends or mix-, tures thereof.
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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 June 21, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2011.
- 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.