Expired Canadian patentCanada
N-isopropylcarbanilylmethyl dithiophosphate pesticides
CA 1111438 A · Owner: Gulf Oil Corporation · Inventors: Patel, Natu R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A class of compounds having the structural formula in which Ar is substituted phenyl and R is methyl or ethyl possesses improved activity as pre-emergent herbicides and insecticides.
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 October 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 12, 1978
GrantedOctober 27, 1981
Term endedOctober 27, 1998
Patent numberCA 1111438 A
Classification (IPC)C07F9/16
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.