Oxazole urea and carbamate derivatives
CA 1072103 A · Owner: Lilly Industries Limited · Inventors: Verge, John P.; Todd, Alec; Ross, William J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention as disclosed herein provides compounds of formula I:, (I), wherein Rl and R2 are independently hydrogen C1-6alkyl, C1-4, hydroxyalkyl, C3-8 cycloalkyl C3-6 acyloxyalkyl, or a phenyl, group optionally substituted with a halogen atom or with a, trifluoromethyl, methyl, methoxy or nitro group; R3 is hydrogen, C1-6 alkyl, C2-6 alkenyl, C3-6 alkoxyalkyl C3-8, cycloalkyl, C3-8 cycloalkyl-C1-4 alkyl a phenyl group, optionally substituted with a halogen atom or with a, trifluoromethyl,methyl, methoxy or nitro group -C1-4 alkyl or, a phenyl group optionally substituted with a halogen atom or with a trifluoromethyl, methyl, methoxy or nitro group -C2-4 alkenyl;and R4 represents the …
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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 February 19, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 1997.
- 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
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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.