Naphthalenepropionic acid derivatives as anti-inflammatory/antiallergic agents
CA 1331001 C · Owner: Musser, John H. · Inventors: Musser, John H.; Kreft, Anthony F. Iii; Giberson, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns .alpha.-methyl-6-(2-quinolinylmethoxy)-2-naphthalene acetic acid, amine salts wherein the amine is an hydroxyalkylamine of formula NR1R2R3 wherein R1 is hydrogen, phenyl, alkyl of 1-6 carbon atoms or hydroxyalkyl of 1-6 carbon atoms R2 is, hydrogen, alkyl of 1-6 carbon atoms or hydroxyalkyl of 1-6 carbon atoms and R3 is hydroxyalkyl of 1-12 carbon atoms. The preferred salts are the tromethamine salts. The amine salts have enhanced activity as compared to the parent acids.
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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 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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
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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.