US3035889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing hydrogen sulphide from gases and producing sulphur therefrom
Assignee: Clayton Aniline Co Ltd
•
Filing: 1960-05-26
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Granted: 1962-05-22
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Expires: 1980-05-26
Abstract
No abstract record available.
Inventors
- 👤 Nicklin Thomas
- 👤 Anthony W Sommerville
- 👤 Brunner Ernest
- 👤 Isherwood Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:55
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/128; B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/523; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05; C01B32/00; C01B32/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR THE ABSORPTION AND SUBSEQUENT REMOVAL AS SULPHUR OF HYDROGEN SULPHIDE FROM GASES IN WHICH THE GAS IS WASHED WITH AN AQUEOUS ALKALINE SOLUTION OF AT LEAST ONE ANTHRAQUINONE DISULPHONIC ACID WHEREBY THE HYDROGEN SULPHIDE IS OXIDISED AND SULPHUR IS LIBERATED, AND THE REDUCED ANTHRAQUINONE DISULPHONIC ACID IS REPXIDISED BY MEANS OF A GAS CONSISTING AT LEAST IN PART OF OXYGEN.
Claim 2
Dependent Claim
63 words
A PROCESS FOR THE ABSORPTION AND SUBSEQUENT REMOVAL AS SULPHUR OF HYDROGEN SULPHIDE FROM GASES IN WHICH THE GAS IS WASHED WITH AN AQUEOUS ALKALINE SOLUTION OF AT LEAST ONE ANTHRAQUINONE DISULPHONIC ACID WHEREBY THE HYDROGEN SULPHIDE IS OXIDISED AND SULPHUR IS LIBERATED, AND THE REDUCED ANTHRAQUINONE DISULPHONIC ACID IS REPXIDISED BY MEANS OF A GAS CONSISTING AT LEAST IN PART OF OXYGEN.
References Cited (Backward Citations)
US2819950A
Cited
US2911438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |