Patent US3498887A successfully refreshed from Google Patents.
US3498887A
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US
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Recovery of sulfur and hydrogen sulfide from admixture with solvent from gas well by plural stage distillation of solvent
Assignee: Phillips Petroleum Co
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Filing: 1967-12-18
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Granted: 1970-03-03
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Expires: 1987-12-18
Abstract
No abstract record available.
Inventors
- 👤 William A Mcclintock
- 👤 Leo L Politte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:04
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/16; C01B17/167; C01B17/02; C01B17/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US461431A
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US2471602A
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US2613174A
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US2798034A
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US2809885A
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US2860030A
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US3042503A
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US3228874A
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US3375639A
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US3362133A
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US3363989A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-02 | 1973-09-01 | 1974-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-02 | 1977-09-01 | 1978-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-02 | 1981-09-01 | 1982-03-03 | $7700.00 | Window Closed / Lapsed |