US2664400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction products of an octyl acid pyrophosphate and soyamine and lubricants containing the same
Assignee: Victor Chemical Works
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Filing: 1949-08-13
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Granted: 1953-12-29
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Expires: 1969-08-13
Abstract
No abstract record available.
Inventors
- 👤 Willard H Woodstock
- 👤 Thomas M Beck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:18
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/098; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/043
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
A LUBRICANT FOR FERROUS METALS COMPRISING OF HYDROCARBON OIL AND A RUST-INHIBITING QUANTITY OF AN OIL-SOLUBLE REACTION PRODUCT PREPARED BY REACTING A DIOCTYL ACID ESTER OF PYROPHOSPHORIC ACID WITH 1 TO 2.5 MOLES, PER ATOM OF PHOSPHORUS IN THE ESTER, OF AN AMINE COMPOSITION CONTAINING AT LEAST 70% OF UNSATURATED ALIPHATIC PRIMARY AMINES EACH HAVING AT LEAST 18 CARBON ATOMS IN THE MOLECULE UNTIL THE REACTION IS SUBSTANTIALLY COMPLETED, THE REACTION BEING CARRIED OUT AT A TEMPERATURE BELOW THAT AT WHICH SUBSTANTIAL DECOMPOSITION OF THE REACTION PRODUCT OCCURS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-28 | 1957-06-29 | 1957-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-28 | 1961-06-29 | 1961-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-28 | 1965-06-29 | 1965-12-29 | $7700.00 | Window Closed / Lapsed |