US2824836A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil compositions
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-11-01
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Granted: 1958-02-25
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Expires: 1974-11-01
Abstract
No abstract record available.
Inventors
- 👤 Harlan M Smith
- 👤 Hoernner William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:35
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/062; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2205/18; C10M2205/20; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/32; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/109; C10M2209/11; C10M2209/111; C10M2209/112; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/20; C10M2215/202; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL, IN THE RANGE OF 0.1 TO 1.5 WT. PERCENT OF A ZINC DIALKYL DITHIOPHOSPATE HAVING IN THE RANGE OF 8 TO 16 CARBON ATOMS PER MOLECULE, AND IN THE RAANGE OF 0.2 TO 0.7 WT. PERCENT OF POLYRICINOLEIC ACID ESTER OF A POLYETHYLENE GLYCOL, SAID GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 200 TO 800 AND SAID ESTER BEING FORMED FROM A POLYRICINOLEIC ACID CONTAINING IN THE RANGE OF 2 TO 4 MOLECULES OF SELF-ESTERIFIED RICINOLEIC ACID.
Claim 2
Dependent Claim
91 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL, IN THE RANGE OF 0.1 TO 1.5 WT. PERCENT OF A ZINC DIALKYL DITHIOPHOSPATE HAVING IN THE RANGE OF 8 TO 16 CARBON ATOMS PER MOLECULE, AND IN THE RAANGE OF 0.2 TO 0.7 WT. PERCENT OF POLYRICINOLEIC ACID ESTER OF A POLYETHYLENE GLYCOL, SAID GLYCOL HAVING A MOLECULAR WEIGHT IN THE RANGE OF 200 TO 800 AND SAID ESTER BEING FORMED FROM A POLYRICINOLEIC ACID CONTAINING IN THE RANGE OF 2 TO 4 MOLECULES OF SELF-ESTERIFIED RICINOLEIC ACID.
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) | 1961-02-24 | 1961-08-26 | 1962-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-24 | 1965-08-26 | 1966-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-24 | 1969-08-26 | 1970-02-25 | $7700.00 | Window Closed / Lapsed |