US2747979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mono-esters of citric acid as metal deactivators for motor fuels
Assignee: Eastman Kodak Co
•
Filing: 1952-11-14
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Granted: 1956-05-29
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Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 John W Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 05:05
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/19; C10L1/1905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
A MOTOR FUEL COMPRISING A CRACKED GASOLINE CONTAINING A HARMFUL CATALYTICALLY-ACTIVE METAL REAGENT INTIMATELY ADMIXED WITH FROM ABOUT 0.0001 TO ABOUT 0.01 PER CENT BASED ON THE WEIGHT OF THE GASOLINE OF A MONOESTER OF CITRIC ACID HAVING ONE OF THE FOLLOWING FORMULAS:
Claim 2
Dependent Claim
43 words
A MOTOR FUEL COMPRISING A CRACKED GASOLINE CONTAINING A HARMFUL CATALYTICALLY-ACTIVE METAL REAGENT INTIMATELY ADMIXED WITH FROM ABOUT 0.0001 TO ABOUT 0.01 PER CENT BASED ON THE WEIGHT OF THE GASOLINE OF A MONOESTER OF CITRIC ACID HAVING ONE OF THE FOLLOWING FORMULAS:
References Cited (Backward Citations)
US2081407A
Cited
FR790041A
Cited
US2493717A
Cited
US2523792A
Cited
US2578649A
Cited
US2641539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |