US3139324A
Expired / Lapsed
US
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Method for purifying gases
Assignee: Azote et Produits Chimiques SA
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Filing: 1961-05-04
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Granted: 1964-06-30
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Expires: 1981-05-04
Abstract
No abstract record available.
Inventors
- 👤 Housset Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:56
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526; C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/101; C10K1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A METHOD FOR PURIFYING GASES CONTAINING BOTH H2S AND CO2, THE STEPS CONSISTING IN INCORPORATING WITH WATER IN THE RATIO OF BETWEEN ABOUT 0.20 GRAM MOLECULE AND 0.02 GRAM MOLECULE PER LITRE AN ETHANOLAMINE CONTAINING NO HYDROGEN ATOM BOUND DIRECTLY WITH A HYDROGEN ATOM AND PHOSPHORIC ACID, THE RESULTANT PH OF THE AQUEOUS SOLUTION BEING ABOUT 8, AND WASHINGTON THE GASES TO BE PURIFIED WITH SAID AQUEOUS SOLUTION UNDER PRESSURE.
Claim 2
Dependent Claim
71 words
IN A METHOD FOR PURIFYING GASES CONTAINING BOTH H2S AND CO2, THE STEPS CONSISTING IN INCORPORATING WITH WATER IN THE RATIO OF BETWEEN ABOUT 0.20 GRAM MOLECULE AND 0.02 GRAM MOLECULE PER LITRE AN ETHANOLAMINE CONTAINING NO HYDROGEN ATOM BOUND DIRECTLY WITH A HYDROGEN ATOM AND PHOSPHORIC ACID, THE RESULTANT PH OF THE AQUEOUS SOLUTION BEING ABOUT 8, AND WASHINGTON THE GASES TO BE PURIFIED WITH SAID AQUEOUS SOLUTION UNDER PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-30 | 1967-12-30 | 1968-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-30 | 1971-12-30 | 1972-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-30 | 1975-12-30 | 1976-06-30 | $7700.00 | Window Closed / Lapsed |