US2734808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
P-phenylenediamine gasoline stabilizers
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:48
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/223
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
N(SEC-ALKYL) -N''-PHENYL -P- PHENYLENEDIAMINE IN WHICH THE SECONDARY ALKYL GROUP CONTAINS FROM 3 TO 11 CARBON ATOMS.
Claim 2
Dependent Claim
17 words
N(SEC-ALKYL) -N''-PHENYL -P- PHENYLENEDIAMINE IN WHICH THE SECONDARY ALKYL GROUP CONTAINS FROM 3 TO 11 CARBON ATOMS.
Claim 3
Dependent Claim
28 words
GASOLINE CONTAINING, AS A STABILIZER AGAINST RAPID DETERIORATION UPON AGING, A STABILIZING AMOUNT OF N-(SECALKYL)-N''-PHENYL-P-PHENYLENEDIAMINE IN WHICH THE SECONDARY ALKYL GROUP CONTAINS FROM 3 TO 11 CARBON ATOMS.
Claim 4
Dependent Claim
28 words
GASOLINE CONTAINING, AS A STABILIZER AGAINST RAPID DETERIORATION UPON AGING, A STABILIZING AMOUNT OF N-(SECALKYL)-N''-PHENYL-P-PHENYLENEDIAMINE IN WHICH THE SECONDARY ALKYL GROUP CONTAINS FROM 3 TO 11 CARBON ATOMS.
References Cited (Backward Citations)
US2067686A
Cited
US2163640A
Cited
US2256189A
Cited
US2395382A
Cited
US2436838A
Cited
US2498630A
Cited
US2494059A
Cited
US2496930A
Cited
US2635042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |