US2772148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel compositions
Assignee: Standard Oil Co
•
Filing: 1955-04-18
•
Granted: 1956-11-27
•
Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Allen E Brehm
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:39
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A FUEL COMPOSITION WHICH COMPRISES ESSENTIALLY A LIGHT HYDROCARBON DISTILLATE AND ABOUT 0.0001 TO 0.1 WEIGHT PERCENT OF AN OIL SOLUBLE N-ALKYL-N'',N''-DI(CARBOXYMETHYL) UREA IN WHICH THE ALKYL GROUP IS A LONG CHAIN CONTAINING 10 TO 40 CARBON ATOMS.
Claim 2
Dependent Claim
38 words
A FUEL COMPOSITION WHICH COMPRISES ESSENTIALLY A LIGHT HYDROCARBON DISTILLATE AND ABOUT 0.0001 TO 0.1 WEIGHT PERCENT OF AN OIL SOLUBLE N-ALKYL-N'',N''-DI(CARBOXYMETHYL) UREA IN WHICH THE ALKYL GROUP IS A LONG CHAIN CONTAINING 10 TO 40 CARBON ATOMS.
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) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |