US2780599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crankcase lubricating oil and additive therefor
Assignee: Standard Oil Co
•
Filing: 1953-09-30
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Granted: 1957-02-05
•
Expires: 1973-09-30
Abstract
No abstract record available.
Inventors
- 👤 John D Bartleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:49
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/10; C10M2207/16; C10M2219/00; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A CRANKCASE LUBRICATING OIL CONTAINING ABOUT 0.2 TO ABOUT 2% BY WEIGHT OF AN ADDITIVE COMPRISING A MIXTURE OF SILVER NAPHTHENATE WITH A NAPHTHENATE SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL NAPHTHENATES.
Claim 2
Dependent Claim
34 words
A CRANKCASE LUBRICATING OIL CONTAINING ABOUT 0.2 TO ABOUT 2% BY WEIGHT OF AN ADDITIVE COMPRISING A MIXTURE OF SILVER NAPHTHENATE WITH A NAPHTHENATE SELECTED FROM THE GROUP CONSISTING OF COPPER AND NICKEL NAPHTHENATES.
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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |