US3773665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing amine antioxidants
Assignee: Mobil Oil AS
•
Filing: 1971-11-17
•
Granted: 1973-11-20
•
Expires: 1991-11-17
Abstract
Abstract Lubricants containing a mixture of p,p''-dioctyldiphenylamine and substituted naphthylamines have improved antioxidant properties.
Inventors
- 👤 M Braid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:09
CPC Classifications
C; C10; C10M; C10M3/00; C10M133/00; C10M133/02; C10M133/04; C10M133/12; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/026; C10M2205/028; C10M2205/14; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/10; C10M2209/103; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/18; C10M2215/182; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
24 words
The composition of claim 1 wherein the p,p''-dioctyl diphenylamine is present therein to the extent of from about 0.001% to about 5% by weight.
Claim 2
Dependent Claim
24 words
The composition of claim 1 wherein the substituted naphthylamine is present therein to the extent of from about 0.001% to about 5% by weight.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein the mixture comprises from about 0.002% to about 10% by weight thereof.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the lubricant is a lubricating oil or grease.
Claim 5
Dependent Claim
15 words
The composition of claim 5 wherein the lubricating oil is a synthetic ester lubricating oil.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the substituted naphthylamine is N-2,4-dinitrophenyl-1-naphthylamine.
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the substituted naphthylamine is N-tert-octylphenyl-1-naphthylamine.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein the substituted naphthylamine is N-(4-tert-octylphenyl)-4-phenylazo-1-naphthylamine.
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein the substituted naphthylamine is 1,1''-dinaphthylamine.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |