Expired Canadian patentCanada
Growth regulating agent for tabacco plants
CA 1101237 A · Owner: Imperial Chemical Industries Limited · Inventors: Collins, David J.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of a substituted acetophenone as a growth regulating (e.g. desuckering) agent for tobacco.
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 19, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 19, 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.
FiledApril 28, 1978
GrantedMay 19, 1981
Term endedMay 19, 1998
Patent numberCA 1101237 A
Classification (IPC)A01N33/18 +1 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.