Expired Canadian patentCanada
4-¬(diallylamino)carbonyl -1,2,2,6,6,-penta- substituted piperidine compounds
CA 1194025 A · Owner: American Cyanamid Company · Inventors: Thomas, Walter M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula (I), and polymers thereof are useful as ultraviolet radiation stabilizers for polymers.
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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 September 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 15, 1982
GrantedSeptember 24, 1985
Term endedSeptember 24, 2002
Patent numberCA 1194025 A
Classification (IPC)C07D211/62 +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.