Acid gas absorbent composition
CA 1329582 C · Owner: Watanabe, Fumio · Inventors: Urano, Yoshiaki; Watanabe, Fumio; Kadono, Yukio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses an acid gas absorbent composition, comprising a diethylene glcyol dialkyl ether represented by the general formula I: R1O(C2H4O)2R (I), wherein R1 and R2 are independently an alkyl group of 1 to 4 carbon atoms, and a polyethylene glycol dialkyl ether represented by the general formula II: R3O(C2H4O)nR4 (II), wherein R3 and R4 are independently an alkyl group of 1 to 4 carbon atoms and n is an integer in the range of 3 to 8. - 22 -
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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 May 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 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.