Expired Canadian patentCanada
Synthesis of chiral thioacetals and thioethers
CA 1330083 C · Owner: Therien, Michel · Inventors: Therien, Michel; Gauthier, Jacques-Yves; Young, Robert N.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thioacids, thiols an acid, and an aldehyde, are used to produce chiral thioacetals of the general formula. I, The compounds are leukotriene antagonists.
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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 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2011.
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FiledFebruary 5, 1987
GrantedJune 7, 1994
Term endedJune 7, 2011
Patent numberCA 1330083 C
Classification (IPC)C07D215/12 +2 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.