Patent US3363989A successfully refreshed from Google Patents.
US3363989A
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Method of removing sulfur containing gases from gaseous mixtures and recovering sulfur therefrom
Assignee: Shell USA Inc
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Filing: 1965-11-04
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Granted: 1968-01-16
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Expires: 1985-11-04
Abstract
No abstract record available.
Inventors
- 👤 Jr Carl H Deal
- 👤 Michael N Papadopoulos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:11
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/08; C10K1/16; C01; C01B; C01B17/00; C01B17/02; C01B17/04; C01B17/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2385704A
Cited
US3068065A
Cited
US3039251A
Cited
US3023088A
Cited
US3065059A
Cited
US3284162A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |