US3128155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desulfurization process
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1960-07-26
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Granted: 1964-04-07
•
Expires: 1980-07-26
Abstract
No abstract record available.
Inventors
- 👤 Mattox William Judson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:08
CPC Classifications
C; C10; C10G; C10G19/00; C10G19/08; C01; C01D; C01D1/00; C01D1/04; C01D1/20; C10G19/067
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF REGENERATING A MOLTEN POTASSIUM HYDROXIDE REAGENT CONTAINING POTASSIUM SULFIDE AND ABOUT 5 TO 30 WT. PERCENT WATER BASED ON TOTAL REAGENT WHICH COMPRISES BUBBLING STEAM THROUGH SAID MOLTEN POTASSIUM HYDROXIDE AND POTASSIUM SULFIDE AT A TEMPERATURE IN THE RANGE OF ABOUT 400 TO 1000*F. AND A PRESSURE IN THE RANGE FROM ABOUT ATMOSPHERIC TO ABOUT 500 P.S.I. TO HYDROLYZE THE POTASSIUM SULFIDE IN THE REAGENT.
Claim 2
Dependent Claim
68 words
THE PROCESS OF REGENERATING A MOLTEN POTASSIUM HYDROXIDE REAGENT CONTAINING POTASSIUM SULFIDE AND ABOUT 5 TO 30 WT. PERCENT WATER BASED ON TOTAL REAGENT WHICH COMPRISES BUBBLING STEAM THROUGH SAID MOLTEN POTASSIUM HYDROXIDE AND POTASSIUM SULFIDE AT A TEMPERATURE IN THE RANGE OF ABOUT 400 TO 1000*F. AND A PRESSURE IN THE RANGE FROM ABOUT ATMOSPHERIC TO ABOUT 500 P.S.I. TO HYDROLYZE THE POTASSIUM SULFIDE IN THE REAGENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |