Method for recovery of ethylene oxide
CA 1284334 C · Owner: Kakimoto, Yukihiko · Inventors: Sawada, Masayuki; Kajimoto, Yoshiaki; Kiguchi, Isamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In the recovery of ethylene oxide from the gas resulting from catalytic gas-phase oxidation of ethylene with a molecular oxygen-containing gas and consequently containing ethylene oxide, a method which comprises subjecting the bottom liquid of an ethylene oxide stripper to a flushing treatment thereby separating the bottom liquid into a vapor-phase part and a liquid-phase part introducing the, vapor-phase part in a compressed state into the bottom of the ethylene oxide stripper, and circulating the liquidphase part to the absorber. The liquid-phase part after, exchanging heat with the bottom of the ethylene oxide absorber, is caused by a heat pump to liberate thermal energy and generate …
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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 21, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 21, 2008.
- 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.