Patent US4723144A successfully refreshed from Google Patents.
Patent US3132103A successfully refreshed from Google Patents.
US3132103A
Expired / Lapsed
US
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Copper treated sulfurized fatty ester lubricant additives
Assignee: Sinclair Research Inc
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Filing: 1961-03-10
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Granted: 1964-05-05
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
- 👤 Ford C Teeter
- 👤 Eugene F Pisha
- 👤 Leo P Connell
- 👤 Jr Charles A Mazzoni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:27
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/06; C10M2219/00; C10M2219/02; C10M2219/024; C10N; C10N2040/00; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
77 words
A COMPOSITION WHICH CONSISTS ESSENTIALLY OF A MINERAL LUBRICATING BASE OIL HAVING INCORPORATED THEREIN ABOUT 5 TO 75% OF AN OIL-SOLUBLE, COPPER-TREATED, SULFURIZED ESTER OF AN UNSATURATED FATTY ACID OF ABOUT 12 TO 22 CARBON ATOMS AND AN ALKANOL OF UP TO ABOUT 20 CARBONS ATOMS, SAID COPPER-TREATED SULFURIZED ESTER BEING PREPARED BY THE METHOD OF CLAIM 4, AND SAID ESTER BEING PRESENTED IN AN AMOUNT SUFFICIENT TO INHIBIT SAID COMPOSITION AGAINST CORROSION TO COPPER AND BRASS.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |