Industrial process for the separation and recovery of chlorine
CA 1320120 C · Owner: Kudoh, Mitsuo · Inventors: Kono, Yoshitsugu; Ajioka, Masanobu; Kudoh, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A gaseous mixture containing chlorine carbon, dioxide and non-condensable gas is compressed and cooled to separate it into a residual gas formed principally of a major portion of the non condensable gas and a condensate formed primarily of chlorine. The condensate is fed to a stripping column to desorb carbon dioxide and a minor portion of the noncondensable gas dissolved in the condensate. The stripped gas formed primarily of chlorine and carbon dioxide may be treated further. Namely the stripped, gas is mixed with he residual gas. At least a portion of the mixed gas is fed into an absorption column whereby a major portion of remaining chlorine is absorbed to lower the chlorine content. …
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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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 2010.
- 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.