Patent US505129A successfully refreshed from Google Patents.
Patent US3340184A successfully refreshed from Google Patents.
US3340184A
Expired / Lapsed
US
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Process for removing sulfur from petroleum oils and synthesizing mercaptans
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-10-30
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Granted: 1967-09-05
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Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Eng Jackson
- 👤 John L Tiedje
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:21
CPC Classifications
C; C10; C10G; C10G29/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD OF REMOVING SULFUR FROM PARAFFINIC NAPHTHA AS A MERCAPTAN CONSISTING ESSENTIALLY OF THE STEPS OF ADMIXING AT LEAST ONE C12 OLEFIN WITH THE NAPHTHA, PASSING THE MIXTURE OVER SULFIDED COBALT MOLYBDATE ON ALUMINIA IN A REACTION ZONE AT AN ELEVATED TEMPERATURE AND PRESSURE, FRACTIONATING THE REACTION PRODUCTS TO SEPARATE DESULFURIZED NAPHTHA AS PRODUCT FROM HYDROGEN SULFIDE AND FROM A BOTTOMS FRACTION CONTAINING C12 OLEFIN AND C12 MERCAPTAN, RECYCLING AT LEAST PART OF SAID HYDROGEN SULFIDE TO SAID REACTION ZONE, SEPARATING SAID BOTTOMS FRACTION INTO A C12 MERCAPTAN FRACTION AS PRODUCT AND C12 OLEFIN AND RECYCLING SAID C12 OLEFIN TO SAID REACTION ZONE.
Claim 2
Independent Claim
104 words
A METHOD OF REMOVING SULFUR FROM PARAFFINIC NAPHTHA AS A MERCAPTAN CONSISTING ESSENTIALLY OF THE STEPS OF ADMIXING AT LEAST ONE C12 OLEFIN WITH THE NAPHTHA, PASSING THE MIXTURE OVER SULFIDED COBALT MOLYBDATE ON ALUMINIA IN A REACTION ZONE AT AN ELEVATED TEMPERATURE AND PRESSURE, FRACTIONATING THE REACTION PRODUCTS TO SEPARATE DESULFURIZED NAPHTHA AS PRODUCT FROM HYDROGEN SULFIDE AND FROM A BOTTOMS FRACTION CONTAINING C12 OLEFIN AND C12 MERCAPTAN, RECYCLING AT LEAST PART OF SAID HYDROGEN SULFIDE TO SAID REACTION ZONE, SEPARATING SAID BOTTOMS FRACTION INTO A C12 MERCAPTAN FRACTION AS PRODUCT AND C12 OLEFIN AND RECYCLING SAID C12 OLEFIN TO SAID REACTION ZONE.
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) | 1970-09-04 | 1971-03-06 | 1971-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-04 | 1975-03-06 | 1975-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-04 | 1979-03-06 | 1979-09-05 | $7700.00 | Window Closed / Lapsed |