US3021281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricant composition
Assignee: Sinclair Refining Co
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Filing: 1958-08-04
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Granted: 1962-02-13
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Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Howard J Matson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:37
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2219/00; C10M2219/02; C10M2219/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING BASE OIL, AND ABOUT 0.1 TO 10% OF AN OIL-SOLUBLE TETRAESTER OF AN ALCOHOL HAVING ABOUT 6 TO 20 CARBON ATOMS AND A CRBOXYLIC ACID HAVING THE FOLLOWING MOLECULAR STRUCTURE:
Claim 2
Dependent Claim
40 words
A LUBRICATING OIL COMPOSITION CONSISTING ESSENTIALLY OF A MINERAL LUBRICATING BASE OIL, AND ABOUT 0.1 TO 10% OF AN OIL-SOLUBLE TETRAESTER OF AN ALCOHOL HAVING ABOUT 6 TO 20 CARBON ATOMS AND A CRBOXYLIC ACID HAVING THE FOLLOWING MOLECULAR STRUCTURE:
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) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |