US3127351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xxvii
Assignee: —
•
Filing: —
•
Granted: 1964-03-31
•
Expires: 1981-03-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:59
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10M; C10M1/00; C10M1/08; C10L1/22; C10L1/222; C10L1/223; C10L1/2235; C10L1/24; C10L1/26; C10L1/30; C10L1/305; C10L1/306; C10M2227/00; C10M2227/08; C10M2227/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A LIQUID HYDROCARBON CRANKCASE LUBRICATING OIL CONTAINING A CYCLOPENTADIENYL MANGANESE TRICARBONYL COMPOUND IN AMOUNT SUFFICIENT TO IMPROVE THE OPERATING CHARACTERISTICS OF A SPARK IGNITION INTERNAL COMBUSTION ENGINE.
Claim 2
Dependent Claim
27 words
A LIQUID HYDROCARBON CRANKCASE LUBRICATING OIL CONTAINING A CYCLOPENTADIENYL MANGANESE TRICARBONYL COMPOUND IN AMOUNT SUFFICIENT TO IMPROVE THE OPERATING CHARACTERISTICS OF A SPARK IGNITION INTERNAL COMBUSTION ENGINE.
References Cited (Backward Citations)
US1592954A
Cited
US2191204A
Cited
US2395382A
Cited
GB600191A
Cited
US2436838A
Cited
US2622971A
Cited
US2557019A
Cited
US2546422A
Cited
US2763617A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-31 | 1967-09-30 | 1968-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-31 | 1971-09-30 | 1972-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-31 | 1975-09-30 | 1976-03-31 | $7700.00 | Window Closed / Lapsed |