Expired Canadian patentCanada
Herbicidal composition
CA 2115259 C · Owner: Ecoval Corporation · Inventors: Lojek, John S.
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 herbicidal composition, which can be formulated for selective or total kill of vegetation comprises a, synergistic combination of acetic acid and another organic acid, notably citric acid.
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
- Filed August 6, 1992 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 6, 1992
GrantedDecember 14, 1999
Term endedAugust 6, 2012
Patent numberCA 2115259 C
Classification (IPC)A01N37/36 +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.