US2606872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Shell Development Co
•
Filing: 1948-12-06
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Granted: 1952-08-12
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Expires: 1968-12-06
Abstract
No abstract record available.
Inventors
- 👤 Gasser Walter
- 👤 Paul R Van Ess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:10
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/08; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/22; C10M2207/24; C10M2207/26; C10M2207/262; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/103; C10M2209/108; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/085; C10M2219/087; C10M2219/089; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/10; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/043; C10M2229/044; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A FINISHED MINERAL LUBRICANTING OIL COMPOSITION COMPOSED OF MINERAL LUBRICATING OIL AND FROM 1% TO 10%, CALCULATED AS SULFATE ASH, OF A MIXTURE OF AN OIL-SOLUBLE ALKALI METAL PETROLEUM SULFONATE AND AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE, SAID SULFONATES BEING PRESENT IN A RATIO OF FROM 2:8 TO 4:6, RESPECTIVELY.
Claim 2
Dependent Claim
52 words
A FINISHED MINERAL LUBRICANTING OIL COMPOSITION COMPOSED OF MINERAL LUBRICATING OIL AND FROM 1% TO 10%, CALCULATED AS SULFATE ASH, OF A MIXTURE OF AN OIL-SOLUBLE ALKALI METAL PETROLEUM SULFONATE AND AN OIL-SOLUBLE BASIC ALKALINE EARTH METAL PETROLEUM SULFONATE, SAID SULFONATES BEING PRESENT IN A RATIO OF FROM 2:8 TO 4:6, RESPECTIVELY.
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) | 1955-08-12 | 1956-02-11 | 1956-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-12 | 1960-02-11 | 1960-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-12 | 1964-02-11 | 1964-08-12 | $7700.00 | Window Closed / Lapsed |