Patent US5990676A successfully refreshed from Google Patents.
US3362891A
Expired / Lapsed
US
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Process and apparatus for separating acidic gas such as hydrogen sulfide and carbon dioxide from gaseous mixtures
Assignee: Combustion Engineering Inc
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Filing: 1965-05-12
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Granted: 1968-01-09
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Expires: 1985-05-12
Abstract
No abstract record available.
Inventors
- 👤 Charles O Meyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:46
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/52; B01D53/526
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2167028A
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US2570291A
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US2614904A
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US2701750A
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US2761818A
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US2738964A
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US2797188A
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US2914469A
Cited
US3269923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-08 | 1971-07-10 | 1972-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-08 | 1975-07-10 | 1976-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-08 | 1979-07-10 | 1980-01-09 | $7700.00 | Window Closed / Lapsed |