US2993772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acid additives
Assignee: Baker Petrolite LLC
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Filing: 1959-02-02
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Granted: 1961-07-25
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Verner L Stromberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:36
CPC Classifications
C; C07; C07C; C07C57/00; C07C57/02; C07C57/13; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/198
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS OF PREVENTING, INHIBITING AND MODIFYING THE FORMATION OF DEPOSITS IN INTERNAL COMBUSTION AND JET ENGINES EMPLOYING A SUBSTANTIALLY HYDROCARBON FUEL WHICH COMPRISES BURNING IN SUCH ENGINES A FUEL CONSISTING OF A LIQUID HYDROCARBON HAVING A BOILING POINT UP TO ABOUT 500*F. AND A MINOR AMOUNT IN THE RANGE OF APPROXIMATELY 0.001 TO 2% BY WEIGHT OF THE FUEL, SUFFICIENT TO PREVENT, INHIBIT AND MODIFY SUCH DEPOSITS, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN OIL SOLUBLE ALKENYL SUCCINIC ACID AND THE ANHYDRIDE THEREOF, HAVING 8 TO 31 CARBON ATOMS ON THE ALKENYL GROUP.
Claim 2
Dependent Claim
97 words
A PROCESS OF PREVENTING, INHIBITING AND MODIFYING THE FORMATION OF DEPOSITS IN INTERNAL COMBUSTION AND JET ENGINES EMPLOYING A SUBSTANTIALLY HYDROCARBON FUEL WHICH COMPRISES BURNING IN SUCH ENGINES A FUEL CONSISTING OF A LIQUID HYDROCARBON HAVING A BOILING POINT UP TO ABOUT 500*F. AND A MINOR AMOUNT IN THE RANGE OF APPROXIMATELY 0.001 TO 2% BY WEIGHT OF THE FUEL, SUFFICIENT TO PREVENT, INHIBIT AND MODIFY SUCH DEPOSITS, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN OIL SOLUBLE ALKENYL SUCCINIC ACID AND THE ANHYDRIDE THEREOF, HAVING 8 TO 31 CARBON ATOMS ON THE ALKENYL GROUP.
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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |