Expired Canadian patentCanada
Preparation of hydrogen peroxide
CA 1265656 C · Owner: The Boc Group, Inc. · Inventors: Brill, William F.
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hydrogen peroxide is produced by reacting hydrogen and oxygen in an acidic aqueous solution containing suspended therein a supported Group VIII noble metal catalyst in a system wherein the reaction medium has a thickness of at most about 2 millimeters. 1305
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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 February 13, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 13, 2007.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 17, 1986
GrantedFebruary 13, 1990
Term endedFebruary 13, 2007
Patent numberCA 1265656 C
Classification (IPC)C01B15/02
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.