Expired Canadian patentCanada
Alkyl-n-(3-trifluoromethylphenyl)-anthranilate
CA 1112251 A · Owner: Hokuriku Pharmaceutical Co. Ltd. · Inventors: Kato, Hideo
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification describes an N-(3-trifluoromethylphenyl)anthranilic acid ester represented by the formula: wherein R represents an alkyl group having 4 to 8 carbon atoms. Such compounds are particularly useful as anti-inflammatory agents.
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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 November 10, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 10, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 7, 1977
GrantedNovember 10, 1981
Term endedNovember 10, 1998
Patent numberCA 1112251 A
Classification (IPC)C07C229/58 +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.