Esters
CA 1048047 A · Owner: Ciba-Geigy Ag · Inventors: Valint, Paul L.; Oswald, Alexis A.; 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 formula (I) (I), wherein, R represents a methyl or ethyl group R1 represents a C3-C5-alkyl group, R2 represents an alkylthiomethyl alkylsulfinylmethyl or, alkylsulfonylmethyl group having at most 5 carbon atoms in toto or a group of the formula -S(CH2)mCN -SO(CH2)mCN, S(CH2)mCl, -SO(CH2)mCl, SCC13 SOCC13, -S(CH2)mCOOR3, -SO(CH2)mCOOR3, -S(CH2)mCON(R4)R5 or -SO(CH2)mCON(R4)R5 wherein R3 represent an alkyl group having fit most 4 carbon atoms, R4 and R5 independently of one another represent a hydrogen atom or an alkyl group having at most 4 carbon atoms and m represents the integer 1 or 2; and, X1 and X2 indepently of one another represent a hydrogen or halogen atom or an …
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.