Leukotriene antagonists
CA 1232917 A · Owner: Smith Kline & French Canada Ltd. · Inventors: Ku, Thomas W.; Gleason, John G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The compounds represented by the formula (I) (I), wherein n is 1 or 2; m is 0, 1 or 2; p is 9 10, 11, 12 or, 13; X is hydrogen or hydroxyl; R is hydroxyl or amino; R1 is hydrogen, amino or , ; and R2 is hydroxyl, amino, -NHCH2CO2H, , , or -NHCH2CONH2 with the proviso that when m is 0, R1 is hydrogen or pharmaceutically acceptable salts thereof have been found to be leukotriene antagonists and useful in the treatment of diseases in which leukotrienes are a factor such as, asthma.
Read the whole patent
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 February 16, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2005.
- 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
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.