Expired Canadian patentCanada
Hydrogen peroxide composition
CA 2126729 C · Owner: Eastman Kodak Company · Inventors: Monticello, Michael Vincent
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous acidic compositions containing hydrogen peroxide and a methyl substituted benzotriazole derivative have been found to have a high stability and do not promote corrosion when used to clean metal objects.
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 June 24, 1994 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2016.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 24, 1994
GrantedNovember 2, 1999
Term endedJune 24, 2014
Patent numberCA 2126729 C
Classification (IPC)A01N59/00 +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.