Process for producing hydrogen peroxide
CA 2128319 A1 · Owner: Hiromoto, Kazuhiko · Inventors: Hiromoto, Kazuhiko; Ishigami, Haruki; Monzen, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for producing hydrogen peroxide comprising the step of producing hydrogen peroxide catalytically from hydrogen and oxygen in a reaction medium, wherein a platinum-group metal catalyst is used which comprises a platinum-group metal and supported, thereon, a niobium oxide, a mixed oxide of niobium a, tantalum oxide, a mixed oxide of tantalum a molybdenum, oxide or a tungsten oxide.
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 November 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2015.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.