US2736641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel oil additive
Assignee: Union Oil Company of California
•
Filing: 1952-02-01
•
Granted: 1956-02-28
•
Expires: 1972-02-01
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Mattson
- 👤 Frederick S Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:47
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A FUEL OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO INHIBIT THE SEPARATION OF SLUDGE, OF A SURFACE ACTIVE AMIDO ALCOHOL CONSISTING ESSENTIALLY OF A FATTY ACID AMIDE OF A LOWER ALKANOLAMINE, SAID FATTY ACID CONTAINING FROM 10 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
41 words
A FUEL OIL CONTAINING A MINOR PROPORTION, SUFFICIENT TO INHIBIT THE SEPARATION OF SLUDGE, OF A SURFACE ACTIVE AMIDO ALCOHOL CONSISTING ESSENTIALLY OF A FATTY ACID AMIDE OF A LOWER ALKANOLAMINE, SAID FATTY ACID CONTAINING FROM 10 TO 18 CARBON ATOMS.
References Cited (Backward Citations)
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Cited
US2604452A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |