US3266866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogen sulfide absorption
Assignee: Shell USA Inc
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Filing: 1962-06-07
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Granted: 1966-08-16
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Expires: 1982-06-07
Abstract
No abstract record available.
Inventors
- 👤 Adrianus P Bally
- 👤 Willem G J Van Dijk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:27
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/523; C; C10; C10K; C10K1/00; C10K1/08; C10K1/10; C10K1/12; C10K1/14; C10K1/143; Y; Y02; Y02P; Y02P20/00; Y02P20/151
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A PROCESS FOR THE SELECTIVE ABSORPTION OF H2S FROM A NORMALLY GASEOUS MIXTURE CONTAINING H2S AND CO2 COMPRISING: (A) CONTACTING SAID NORMALLY GASEOUS MIXTURE WITH AN AQUEOUS ABSORBENT SOLUTIION OF A DIPROPANOLAMINE WHEREBY A SUBSTANTIAL PORTION OF THE H2S AND CO2 ARE SELECTIVELY ABSORBED THEREIN; (B) HEATING SAID ABSORBENT SOLUTION CONTAINING A SUBSTANTIAL PROPORTION OF H2S AND CO2 TO A TEMPERATURE
Claim 2
Dependent Claim
61 words
A PROCESS FOR THE SELECTIVE ABSORPTION OF H2S FROM A NORMALLY GASEOUS MIXTURE CONTAINING H2S AND CO2 COMPRISING: (A) CONTACTING SAID NORMALLY GASEOUS MIXTURE WITH AN AQUEOUS ABSORBENT SOLUTIION OF A DIPROPANOLAMINE WHEREBY A SUBSTANTIAL PORTION OF THE H2S AND CO2 ARE SELECTIVELY ABSORBED THEREIN; (B) HEATING SAID ABSORBENT SOLUTION CONTAINING A SUBSTANTIAL PROPORTION OF H2S AND CO2 TO A TEMPERATURE
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) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |