Esters
CA 1048046 A · Owner: Ciba-Geigy Ag · Inventors: Varsanyi, Denis; Drabek, Jozef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the general formula I wherein R1 represents a methyl or ethyl group R2 represents a C3-C5-alkyl, group, R3 represents a (C1-C4-alkyl)carbonyl (C1-C4-alkoxy)carbonyl, amino-, carbonyl (C1-C4-alkyl)-aminocarbonyl, di-N-(C1-C4-alkyl)-aminocarbonyl or trihalomethyl group, R4 and R5 independently of one another represent a hydrogen or halogen atom and X represents an oxygen or sulphur atom with the, proviso that when R3 represents alkyl carbonyl or alkoxy carbonyl and R2 represents n-propyl, then X represents sulfur exhibit valuable pesticidal, in particular insecticidal and acraicidal properties.
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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 1996.
- 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.