Process for production of hydrogen peroxide
CA 2315719 C · Owner: Wanngard, Johan · Inventors: Herrmann, Wolfgang; Nystrom, Mats; Wanngard, Johan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for continuously producing hydrogen peroxide comprising the steps of feeding hydrogen and oxygen containing gas to a reactor (1) provided with a catalyst; contacting the hydrogen and oxygen gas (4) with the catalyst and thereby forming hydrogen peroxide and; withdrawing , hydrogen peroxide containing gas from the reactor; wherein the catalyst comprises a solid catalytically active material at least partially covered with a layer of a stationary phase different from the catalytically active material.
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 December 22, 1998 and granted September 16, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 22, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 22, 2020.
- 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.