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Patent US2796407A successfully refreshed from Google Patents.
US2796407A
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Rust preventative compositions of matter
Assignee: Standard Oil Co
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Filing: 1955-04-18
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Granted: 1957-06-18
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Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:33
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/16; C10M2215/00; C10M2215/10; C10M2215/102; C10N; C10N2040/00; C10N2040/135; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
43 words
A LUBRICATING OIL COMPOSITION WHICH ESSENTIALLY COMPRISES A MAJOR AMOUNT OF MINERAL LUBRICATING OIL BASE AND A MINOR AMOUNT OF AN N-ALKYL-N'', N''-DI(CARBOXYMETHYL) UREA CONTAINING FROM ABOUT 10 TO ABOUT 40 CARBON ATOMS IN THE ALKYL GROUP SUFFICIENT TO PROVIDE PROTECTION AGAINST RUSTING.
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) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |