US2589979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvents for gasoline inhibitors
Assignee: Standard Oil Development Co
•
Filing: 1949-09-01
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Granted: 1952-03-18
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Expires: 1969-09-01
Abstract
No abstract record available.
Inventors
- 👤 Barney R Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:54
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1608; C10L1/18; C10L1/182; C10L1/183; C10L1/1832; C10L1/1837; C10L1/185; C10L1/1852; C10L1/1855; C10L1/22; C10L1/222; C10L1/223; C10L1/2235
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A COMPOSITION COMPRISING A MOTOR GASOLINE, A N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE AND PARA-DIOXAN, SAID N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE BEING PRESENT IN PROPORTIONS OF ABOUT 0.1 TO 4 POUNDS PER 5000 GALLONS, AND SAID PARA-DIOXAN BEING PRESENT IN PROPORTIONS OF ABOUT 1 TO 4 TIMES THE AMOUNT OF N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE.
Claim 2
Dependent Claim
45 words
A COMPOSITION COMPRISING A MOTOR GASOLINE, A N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE AND PARA-DIOXAN, SAID N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE BEING PRESENT IN PROPORTIONS OF ABOUT 0.1 TO 4 POUNDS PER 5000 GALLONS, AND SAID PARA-DIOXAN BEING PRESENT IN PROPORTIONS OF ABOUT 1 TO 4 TIMES THE AMOUNT OF N-N''-DI-SECONDARY-BUTYL P-PHENYLENEDIAMINE.
References Cited (Backward Citations)
US2380420A
Cited
US2443569A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |