US2769763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing special naphthas of improved characteristics by contacting a refined naphtha with silver molybdate at elevated temperature
Assignee: Pure Oil Co
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Filing: 1954-07-26
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Granted: 1956-11-06
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Expires: 1974-07-26
Abstract
No abstract record available.
Inventors
- 👤 Annable Weldon Grant
- 👤 Robert M Haines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:11
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/68; B01J23/683; B01J23/686; C; C10; C10G; C10G2400/00; C10G2400/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
THE METHOD OF PRODUCING SPECIAL SOLVENT NAPHTHAS FROM HIGHLY REFINED PETROLEUM HYDROCARBON MIXTURES CONTAINING SMALL AMOUNTS OF TOTAL SULFUR OF NOT MORE THAN ABOUT 0.16% BY WEIGHT WHICH COMPRISES SUBJECTING SAID HYDROCARBON MIXTURES TO CONTACT WITH SILVER MOLYBDATE AT A TEMPERATURE OF ABOUT 400 TO 500* F. AND SEPARATING SPECIAL SOLVENT NAPHTHAS THEREFROM CHARACTERIZED BY THEIR ABILTITY TO PASS THE DISTILLATION-CORROSION TEST.
Claim 2
Independent Claim
62 words
THE METHOD OF PRODUCING SPECIAL SOLVENT NAPHTHAS FROM HIGHLY REFINED PETROLEUM HYDROCARBON MIXTURES CONTAINING SMALL AMOUNTS OF TOTAL SULFUR OF NOT MORE THAN ABOUT 0.16% BY WEIGHT WHICH COMPRISES SUBJECTING SAID HYDROCARBON MIXTURES TO CONTACT WITH SILVER MOLYBDATE AT A TEMPERATURE OF ABOUT 400 TO 500* F. AND SEPARATING SPECIAL SOLVENT NAPHTHAS THEREFROM CHARACTERIZED BY THEIR ABILTITY TO PASS THE DISTILLATION-CORROSION TEST.
References Cited (Backward Citations)
US2029100A
Cited
US2620362A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-06 | 1960-05-07 | 1960-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-06 | 1964-05-07 | 1964-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-06 | 1968-05-07 | 1968-11-06 | $7700.00 | Window Closed / Lapsed |