US2760852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable fuel oil compositions
Assignee: Gulf Research and Development Co
•
Filing: 1951-04-12
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Granted: 1956-08-28
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Expires: 1971-04-12
Abstract
No abstract record available.
Inventors
- 👤 Donald R Stevens
- 👤 Elizabeth L Fareri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:35
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198; C10L1/1981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MIXTURE OF STRAIGHT RUN AND CRACKED DISTILLATE FUEL OILS TENDING TO DEPOSIT SLUDGE AND A MINOR AMOUNT OF FROM 0.01 TO 0.1 PER CENT BY WEIGHT OF THE MIXED FUEL OIL OF THE CALCIUM SALT OF THE CONDENSATION PRODUCT OF FORMALDEHYDE AND AN OCTYL PHENOL, SAID CONDENSATION PRODUCT CONTAINING ABOVE FIVE MOLS OF OCTYL PHENOL PER MOLECULE OF CONDENSATE.
Claim 2
Dependent Claim
69 words
A FUEL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MIXTURE OF STRAIGHT RUN AND CRACKED DISTILLATE FUEL OILS TENDING TO DEPOSIT SLUDGE AND A MINOR AMOUNT OF FROM 0.01 TO 0.1 PER CENT BY WEIGHT OF THE MIXED FUEL OIL OF THE CALCIUM SALT OF THE CONDENSATION PRODUCT OF FORMALDEHYDE AND AN OCTYL PHENOL, SAID CONDENSATION PRODUCT CONTAINING ABOVE FIVE MOLS OF OCTYL PHENOL PER MOLECULE OF CONDENSATE.
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) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |