US3071433A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing the hydrogen sulfide content of industrial waste gases
Assignee: Syensqo USA LLC
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Filing: 1959-05-11
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Granted: 1963-01-01
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Expires: 1979-05-11
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Dunn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/74; B01D53/86; B01D53/8603; B01D53/8612; B01D53/8615; C; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD OF REDUCING THE HYDROGEN SULFIDE CONTENT OF INDUSTRIAL WASTE GASES BY THE HOMOGENEOUS FLUID PHASE CATALYTIC OXIDATION OF HYDROGEN SULFIDE TO FREE SULFUR, COMPRISING THE STEPS OF ADMIXING WITH WASTE GAS CONTAINING A SMALL AMOUNT OF HYDROGEN SULFIDE, A SMALL AMOUNT OF A COMPOUND IN FLUID PHASE SELECTED FROM THE CLASS CONSISTING OF AMMONIA, ALIPHATIC AMINES AND ALICYCLIC AMINES, AND DISCHARGING THE MIXTURE OF THE WASTE GAS, SAID COMPOUND AND SUBSTANTIALLY ALL THE HYDROGEN SULFIDE TO THE ATMOSPHERE.
Claim 2
Independent Claim
80 words
A METHOD OF REDUCING THE HYDROGEN SULFIDE CONTENT OF INDUSTRIAL WASTE GASES BY THE HOMOGENEOUS FLUID PHASE CATALYTIC OXIDATION OF HYDROGEN SULFIDE TO FREE SULFUR, COMPRISING THE STEPS OF ADMIXING WITH WASTE GAS CONTAINING A SMALL AMOUNT OF HYDROGEN SULFIDE, A SMALL AMOUNT OF A COMPOUND IN FLUID PHASE SELECTED FROM THE CLASS CONSISTING OF AMMONIA, ALIPHATIC AMINES AND ALICYCLIC AMINES, AND DISCHARGING THE MIXTURE OF THE WASTE GAS, SAID COMPOUND AND SUBSTANTIALLY ALL THE HYDROGEN SULFIDE TO THE ATMOSPHERE.
References Cited (Backward Citations)
US1479852A
Cited
GB312769A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |