US3331776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating oil composition
Assignee: Shell USA Inc
•
Filing: 1963-09-19
•
Granted: 1967-07-18
•
Expires: 1983-09-19
Abstract
No abstract record available.
Inventors
- 👤 Krukziener Maurits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:00
CPC Classifications
C; C10; C10M; C10M129/00; C10M129/86; C10M129/95; C07; C07C; C07C69/00; C07C69/52; C07C69/593; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/288; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/12; C10N; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM 0.1% TO 10% OF AN OIL-SOLUBLE DETERGENT MONOESTER OF A MONO SUBSTITUTED POLYOLEFIN SUCCINIC ANHYDRIDE AND AN ALKANEPOLYOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL AND MANNITOL WHEREIN THE POLYOLEFIN RADICAL CONTAINS FROM 30 TO 700 CARBON ATOMS.
Claim 2
Dependent Claim
51 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF MINERAL LUBRICATING OIL AND FROM 0.1% TO 10% OF AN OIL-SOLUBLE DETERGENT MONOESTER OF A MONO SUBSTITUTED POLYOLEFIN SUCCINIC ANHYDRIDE AND AN ALKANEPOLYOL SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITOL AND MANNITOL WHEREIN THE POLYOLEFIN RADICAL CONTAINS FROM 30 TO 700 CARBON ATOMS.
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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |