Substituted biphenyl derivatives
CA 1294975 C · Owner: Riker Laboratories, Inc. · Inventors: Scherrer, Robert Allan; Kirk, Alan Raymond
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-, F.N. 40856 USA 3A, ABSTRACT OF THE DISCLOSURE Novel compounds which are 2,6-di-tertiary-butylphenols substituted in the 4 position by an acylaminophenyl group which acylaminophenyl group is substituted by a moiety which includes a carboxyl group, are useful as inhibitors of leukotriene biosynthesis and as antiallergic agents. 74:12
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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 2009.
- 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.