Substituted phenylpiperazine compounds as antihypertensive agents
CA 1204754 A · Owner: Warner-Lambert Company · Inventors: Maxwell, Donald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of general formula (I), wherein: n is 2, 3 or 4; A is, (A1) (A2); and, R1 is H, C1-6 alkyl or C1-6 alkoxy; with the provisos: (i) when n is 3 and A is (A1), R1 is not 3-OCH3 (ii) when n is 3, and A is (A2), R1 is not 2-OCH3 or 4-OCH3 and, (iii) when n is 4 and A is (A2), R1 is not 4-CH3 or 4-OCH3 are disclosed. Processes for preparing these compounds and their use as antihypertensive agents are also disclosed.
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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.