US2840461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dialkyl alkanol amines as anti-stalling additives
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-12-06
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Granted: 1958-06-24
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Expires: 1974-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gordon W Duncan
- 👤 William E Lifson
- 👤 Joseph P Haworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:46
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10L1/2225
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A GASOLINE HAVING AN ASTM 50% DISTILLATION POINT BELOW ABOUT 310*F. CONTAINING FROM 0.1 TO 0.5 VOL. PERCENT OF A DIALKYL ALKANOL TERTIARY AMINE IN WHICH EACH OF THE ALKYL GROUPS CONTAINS FROM 1 TO 4 CARBON ATOMS AND THE ALKANOL GROUP CONTAINS FROM 2 TO 3 CARBON ATOMS.
Claim 2
Dependent Claim
49 words
A GASOLINE HAVING AN ASTM 50% DISTILLATION POINT BELOW ABOUT 310*F. CONTAINING FROM 0.1 TO 0.5 VOL. PERCENT OF A DIALKYL ALKANOL TERTIARY AMINE IN WHICH EACH OF THE ALKYL GROUPS CONTAINS FROM 1 TO 4 CARBON ATOMS AND THE ALKANOL GROUP CONTAINS FROM 2 TO 3 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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |