Patent US3767575A successfully refreshed from Google Patents.
US3767575A
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Oxidation resistant lubricant compositions
Assignee: Mobil Oil AS
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Filing: 1971-11-16
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Granted: 1973-10-23
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Expires: 1991-11-16
Abstract
Abstract Lubricants, especially lubricating oils and greases, containing an acyloxy-substituted diarylamine have improved oxidation resistance.
Inventors
- 👤 M Braid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:16
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/109; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
27 words
The composition of claim 1 wherein the substituted diarylamine is present in said lubricant in an amount of from about 0.005 to about 15 percent by weight.
Claim 2
Dependent Claim
14 words
The composition of claim 1 wherein the lubricant is a lubricating oil or grease.
Claim 3
Dependent Claim
12 words
The composition of claim 3 wherein the lubricant is a lubricating oil.
Claim 4
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 4-anilinophenyl stearate.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 4-anilinophenyl pivalate.
Claim 6
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 4-(2-naphthylamino)phenyl pivalate.
Claim 7
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 4-(2-naphthylamino)phenyl laurate.
Claim 8
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 3-anilinophenyl pivalate.
Claim 9
Dependent Claim
11 words
The composition of claim 1 wherein the diarylamine is 4-(1-naphthylamino)phenyl pivalate.
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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |