US3354081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for desulfurization employing k2s
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1965-09-01
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Granted: 1967-11-21
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Expires: 1985-09-01
Abstract
No abstract record available.
Inventors
- 👤 Clyde L Aldridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:34
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/06; C10G29/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
102 words
AN IMPROVED CONTINUOUS PROCESS FOR REMOVING SULFUR FROM PETROLIUM RESIDUUMS CONTAINING 0.5 TO 10.0 WT. PERCENT SULFUR IN THE FORM OF SULFIDES, DISULFIDES AND SULFUR SUBSTITUTED RING COMPOUNDS COMPRISING THE STEPS OF CONTACTING THE RESIDIUM WITH A TREATING AGENT CONSISTING OF K2S AT A TEMPERATURE IN THE RANGE OF 300-1000*F. IN THE PRESENCE OF 5-30 WT. PERCENT H2O BASED ON K2S, SEPARATING DESULFURIZED RESIDIUM FROM THE SPENT K2S TREATING AGENT, CONTACTING SPENT K2S TREATING AGENT WITH STEAM AT A TEMPERATURE IN THE RANGE OF 400 TO 1000*F., RECOVERING REGENERATED K2S TREATING AGENT AND RECYCLING THE TREATING AGENT TO THE RESIDUUM CONTACTING STEP.
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |