Method of obtaining methyl alcohol from raw gas and installation for carrying out said method
CA 2365461 A1 · Owner: Wieser-Linhart, Emil A. J. · Inventors: Wieser-Linhart, Emil A. J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a first purification stage (1) hydrogen sulfide contained in the raw gas is separated by microbial oxidation into water and sulfur. In a second (17) and third (32) purification stage the methane contained in the desulphurized raw gas is oxidized by further microbial oxidation to yield methyl alcohol. The first purification stage (1) comprises a first fixed trickling filter device (2), the second purification stage (17) comprises a second fixed trickling filter device (18) and the third purification stage (32) comprises a third fixed trickling filter device (33). The first fixed trickling filter device (2) contains microorganisms which carry out the oxidation of H2S into sulfur. …
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 March 17, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 17, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 17, 2022.
- 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.