US2763613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil containing dicyclopentadienyl iron and an oil soluble organic divalent metal salt
Assignee: Shell Development Co
•
Filing: 1953-10-29
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Granted: 1956-09-18
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Expires: 1973-10-29
Abstract
No abstract record available.
Inventors
- 👤 Lawrence B Scott
- 👤 Alan C Nixon
- 👤 Douglas G Roddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:53
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/24; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/101; C10M2209/103; C10M2211/00; C10M2211/04; C10M2211/044; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/10; C10M2215/16; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/087; C10M2219/088; C10M2219/089; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2227/00; C10M2227/08; C10M2227/081; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A LUBRICATING OIL COMPOSITION COMPRISING A PREDOMINANT AMOUNT OF A LUBRICATING OIL AND A MINOR, BUT EFFECTIVE KNOCK-REDUCING AMOUNT OF A DICYCLOPENTADIENYL IRON COMPOUND CONTAINING ONLY IRON, CARBON AND HYDROGEN IN THE MOLECULE, AND A MINOR, BUT EFFECTIVE, WEAR-INHIBITING AMOUNT OF AN OIL-SOLUBLE DIVALENT METAL SALT OF AN ORGANIC ACIDIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIVALENT METAL SULFONATES, DIVALENT METAL PHENATES, DIVALENT METAL PHOSPHATES AND DIVALENT METAL CARBOXYLATES.
Claim 2
Dependent Claim
70 words
A LUBRICATING OIL COMPOSITION COMPRISING A PREDOMINANT AMOUNT OF A LUBRICATING OIL AND A MINOR, BUT EFFECTIVE KNOCK-REDUCING AMOUNT OF A DICYCLOPENTADIENYL IRON COMPOUND CONTAINING ONLY IRON, CARBON AND HYDROGEN IN THE MOLECULE, AND A MINOR, BUT EFFECTIVE, WEAR-INHIBITING AMOUNT OF AN OIL-SOLUBLE DIVALENT METAL SALT OF AN ORGANIC ACIDIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIVALENT METAL SULFONATES, DIVALENT METAL PHENATES, DIVALENT METAL PHOSPHATES AND DIVALENT METAL CARBOXYLATES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |