Expired Canadian patentCanada
Extraction and recovery of cineole
CA 1060034 A · Owner: Arizona Chemical Company · Inventors: Davis, Curry B.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method of extracting cineole from a terpene fraction containing cineole, by treating the terpene fraction with a strong mineral acid, preferably concentrated sulfuric acid, and thereafter recovering the cineole.
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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 August 7, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 7, 1996.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedAugust 7, 1979
Term endedAugust 7, 1996
Patent numberCA 1060034 A
Classification (IPC)C07D311/02 +1 more
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.