Patent US2506049A successfully refreshed from Google Patents.
US2506049A
Expired / Lapsed
US
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Lubricant
Assignee: Battelle Memorial Institute Inc
•
Filing: 1946-12-18
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Granted: 1950-05-02
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Expires: 1966-12-18
Abstract
No abstract record available.
Inventors
- 👤 George R Waitkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:59
CPC Classifications
C; C10; C10M; C10M137/00; C10M2201/00; C10M2201/06; C10M2201/062; C10M2207/00; C10M2207/02; C10M2207/021; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR AMOUNT SUFFICIENT TO STABILIZE THE OIL AGAINST OXIDATION OF AN OIL-SOLUBLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKARYL, ARALKYL, AND ARYL SELENONOPHOSPHATES.
Claim 2
Dependent Claim
40 words
AN IMPROVED MINERAL OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF A MINERAL OIL AND A MINOR AMOUNT SUFFICIENT TO STABILIZE THE OIL AGAINST OXIDATION OF AN OIL-SOLUBLE COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKARYL, ARALKYL, AND ARYL SELENONOPHOSPHATES.
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) | 1953-05-01 | 1953-10-31 | 1954-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-05-01 | 1957-10-31 | 1958-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-05-01 | 1961-10-31 | 1962-05-02 | $7700.00 | Window Closed / Lapsed |