Process of removing chemical compounds of arsenic and/or antimony
CA 1102265 A · Owner: Metallgesellschaft Aktiengesellschaft · Inventors: Simo, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a process of removing chemical compounds selected from the group consisting of arsenic, antimony and mixtures thereof from substantially organic liquids which have become available as a result of the distillation of oil shale or coal or of the pressure gasification of coal. Said process comprises a treatment with hydrogen under superatmospheric pressure and elevated temperature and a subsequent separation of the solids.
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
- Granted June 2, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 1998.
- 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.