Patent US2790751A successfully refreshed from Google Patents.
US2790751A
Expired / Lapsed
US
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Purification of petroleum distillates
Assignee: Universal Oil Products Co
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Filing: 1955-02-21
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Granted: 1957-04-30
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Expires: 1975-02-21
Abstract
No abstract record available.
Inventors
- 👤 Curtis F Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:51
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; C10G29/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN THE REMOVAL OF NITROGEN FROM A PETROLEUM DISTILLATE CONTAINING NITROGEN IN A PROPORTION TO SULFUR GREATER THAT HEREINAFTER DEFINED, BY TREATMENT AT PURIFICATION CONDITIONS IN THE PRESENCE OF A MOLYBDENUM CONTAINING CATALYST, THE IMPROVEMENT WHICH COMPRISES ADDING SULFUR TO SAID DISTILLATE IN AN AMOUNT SUCH THAT THE TOTAL SULFUR IS IN CONCENTRATION AT LEAST EQUAL TO THAT EXPRESSED BY THE EQUATION S=25.8N+0.071, WHERE S IS SULFUR IN WEIGHT PERCENT AND N IS NITROGEN IN WEIGHT PERCENT PROVIDED, HOWEVER, THAT THE TOTAL SULFUR CONCENTRATION IS AT LEAST 0.2% BY WEIGHT OF SAID PETROLEUM DISTILLATE.
Claim 2
Dependent Claim
94 words
IN THE REMOVAL OF NITROGEN FROM A PETROLEUM DISTILLATE CONTAINING NITROGEN IN A PROPORTION TO SULFUR GREATER THAT HEREINAFTER DEFINED, BY TREATMENT AT PURIFICATION CONDITIONS IN THE PRESENCE OF A MOLYBDENUM CONTAINING CATALYST, THE IMPROVEMENT WHICH COMPRISES ADDING SULFUR TO SAID DISTILLATE IN AN AMOUNT SUCH THAT THE TOTAL SULFUR IS IN CONCENTRATION AT LEAST EQUAL TO THAT EXPRESSED BY THE EQUATION S=25.8N+0.071, WHERE S IS SULFUR IN WEIGHT PERCENT AND N IS NITROGEN IN WEIGHT PERCENT PROVIDED, HOWEVER, THAT THE TOTAL SULFUR CONCENTRATION IS AT LEAST 0.2% BY WEIGHT OF SAID PETROLEUM DISTILLATE.
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) | 1960-04-29 | 1960-10-29 | 1961-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-29 | 1964-10-29 | 1965-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-29 | 1968-10-29 | 1969-04-30 | $7700.00 | Window Closed / Lapsed |