Expired Canadian patentCanada
5-phenylcarbamoyl-barbituric acids
CA 1074316 A · Owner: Ciba-Geigy Ag · Inventors: Beriger, Ernst
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds of the formula wherein R1 is Methyl or ethyl, R2 is C1-C4-alkyl or allyl R4 is halogen, methyl or trifluormethyl and R5 is hydrogen halogen, methyl or trifluoromethyl and their tautomers exhibit valuable insecticidal 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 March 25, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 25, 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.
Filed—
GrantedMarch 25, 1980
Term endedMarch 25, 1997
Patent numberCA 1074316 A
Classification (IPC)C07D239/54 +2 more
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.