Oxazoleacetic acid derivatives
CA 1195986 A · Owner: Takeda Chemical Industries, Ltd. · Inventors: Meguro, Kanji; Fujita, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compound of the formula: wherein R1 is (A) a group of the formula wherein R4 is H, a halogen or trifluoromethyl group or (B) a group of the formula, wherein n is O or an interger of 1 to 3; R5 is H or an alkyl group of 1 to 6 carbon atoms; respective R6 and R7 are an alkyl group of 1 to 6 carbon atoms an alkenyl, group of 2 to 6 carbon atoms a cycloalkyl group of 3 to, 7 carbon atoms or a cycloalkenyl group of 5 to 7 carbon atoms; R6 and R7 may be combined with the neighbouring carbon atom to represent a cycloalkyl group of 3 to 7 carbon atoms; a cycloalkenyl group of 5 to 7 carbon atoms, a bicycloalkyl group of 7 to 10 carbon atoms or, a bicycloalkyl group of 7 to 10 carbon atoms; R2 is …
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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 October 29, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2002.
- 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.