1,2,3-thiadiazolyl-ureas
CA 1078202 A · Owner: Schering Aktiengesellschaft · Inventors: Arndt, Friedrich; Rusch, Reinhart; Schulz, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Living plants can be defoliated using a compound of the general formula I, (I), in which R1 represents a hydrogen atom or a lower alkyl group; R2 represents a hydrogen atom or an alkyl group which may be interrupted by at least one hetero atom selected from oxygen and sulphur atoms; R3 represents an alkyl group which may be interrupted by at least one hetero atom selected from oxygen and sulphur atoms, a cycloaliphatic hydrocarbon group which may be substituted by at least one alkyl group, or an aromatic hydrocarbon group which may be substituted by at least one substituent selected from alkyl groups, halogen atoms, alkyl-mercapto groups alkoxy, groups, trifluoromethyl groups and a nitro …
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 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 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
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.