1,1,2-triaryl-1-alkene derivatives
CA 1289570 C · Owner: Asao, Tetsuji · Inventors: Sugimoto, Yoshikazu; Yamada, Yuji; Takeda, Setsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a 1,1,2-triaryl-1-alkenederivative of the formula, (I), wherein R1 and R2 each represent a lower alkyl group, one of R3 and R4 is a lower alkyl group and the other is a group of the formula, (in which R5 is a hydrogen atom a lower alkyl group, a lower alkoxy group a halogen atom or -OPO(OH)2, group); or a pharmacologically acceptable salt thereof its preparation and agents containing the derivative for treating mammary cancer and anovulatory infertility.
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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 September 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2008.
- 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.