Hydrogen sulfide removal from liquid sulfur
CA 2487988 A1 · Owner: Devenny, David Ian · Inventors: Capone, Michael Allen; Wu, Francis Sui Lun; Shapka, Raymond Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for removing hydrogen sulfide from liquid sulfur comprising , introducing liquid sulfur containing hydrogen sulfide in an upstream portion of a conduit (3). The conduit (3) has a fluid outlet in a downstream portion thereof located within a lower portion of a first vessel (1). The method further includes causing the liquid sulfur (3a) to flow through the conduit outlet into the first vessel (1), up an annulus (6) formed between the conduit (3) and the first vessel (1) and overflow through an outlet (4) positioned at an upper portion of the first vessel into a second vessel (15) which is connected to a liquid sulfur pit operating at atmospheric pressure. Air (38) is …
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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
- Filed June 6, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2025.
- 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.