Patent US2901335A successfully refreshed from Google Patents.
US2901335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Additive for leaded gasoline
Assignee: Standard Oil Co
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Filing: 1954-10-05
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Granted: 1959-08-25
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Expires: 1974-10-05
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
- 👤 Allen E Brehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:22
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A COMPOSITION CONSISTING ESSENTIALLY OF A GASOLINE CONTAINING BETWEEN ABOUT 0.5 AND 6CC. PER GALLON OF TETRAETHYLLEAD AND BETWEEN ABOUT 0.0005 AND 0.5 WEIGHT PERCENT OF AN AMINE SALT OF AN AMINO-CARBOXYLIC ACID OBTAINED BY REACTING, AT A TEMPERATURE BETWEEN ABOUT 30* C. AND 200*C., A MOLAR RATIO OF AMINE TO ACID BETWEEN ABOUT 0.5 AND 1.5 OF THE STOICHIOMETRIC REQUIREMENT TO REACT ALL THE CARBOXYLIC GROUPS IN THE ACID, AN AMINE SELECTED FROM THE CLASS CONSISTING OF (1) ALIPHATIC AMINES WHEREIN AN ALIPHATIC GROUP CONTAINS AT LEAST 8 CARBON ATOMS AND (2) IMIDAZOLINE CONTAINING AN ALIPHATIC SUBSTITUENT HAVING AT LEAST 8 CARBON ATOMS IS PRESENT, WITH (B) AN AMINO/-CARBOXYLIC ACID HAVING THE CONFIGURATION
Claim 2
Dependent Claim
114 words
A COMPOSITION CONSISTING ESSENTIALLY OF A GASOLINE CONTAINING BETWEEN ABOUT 0.5 AND 6CC. PER GALLON OF TETRAETHYLLEAD AND BETWEEN ABOUT 0.0005 AND 0.5 WEIGHT PERCENT OF AN AMINE SALT OF AN AMINO-CARBOXYLIC ACID OBTAINED BY REACTING, AT A TEMPERATURE BETWEEN ABOUT 30* C. AND 200*C., A MOLAR RATIO OF AMINE TO ACID BETWEEN ABOUT 0.5 AND 1.5 OF THE STOICHIOMETRIC REQUIREMENT TO REACT ALL THE CARBOXYLIC GROUPS IN THE ACID, AN AMINE SELECTED FROM THE CLASS CONSISTING OF (1) ALIPHATIC AMINES WHEREIN AN ALIPHATIC GROUP CONTAINS AT LEAST 8 CARBON ATOMS AND (2) IMIDAZOLINE CONTAINING AN ALIPHATIC SUBSTITUENT HAVING AT LEAST 8 CARBON ATOMS IS PRESENT, WITH (B) AN AMINO/-CARBOXYLIC ACID HAVING THE CONFIGURATION
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-08-24 | 1963-02-23 | 1963-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-24 | 1967-02-23 | 1967-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-24 | 1971-02-23 | 1971-08-25 | $7700.00 | Window Closed / Lapsed |