US3756953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vatives of high molecular weight mannich reaction condensation concentrate and crankcase oils comprising oil solutions of boron deri
Assignee: BP Corp North America Inc
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Filing: 1972-01-07
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Granted: 1973-09-04
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Expires: 1992-01-07
Abstract
Abstract OIL SOLUTIONS CONTAINING 0.1-70 WEIGHT PERCENT OF BORON-CONTAINING MANNICH REACTION CONDENSATION PRODUCTS OF (1) HIGH MOLECULAR WEIGHT ALKYL-SUBSTITUTED HYDROXYAROMATIC COMPOUNDS WHOSE ALKYL SUBSTITUENT HAS UPWARD FROM 40 TO 20,000 CARBON ATOMS, (2) AMINE WHICH CONTAINS AN HN< GROUP, AND (3) AN ALDEHYDE IN THE RESPECTIVE REACTANT MOLAR RATION OF 1:0.1-10:1.0-10, FURTHER CONDENSED WITH A BORON COMPOUND ARE NOVEL LUBRICANT OIL COMPOSITIONS. SUCH SOLUTIONS AFFORD PROTECTION AGAINST SLUDGE AND VARNISH DEPOSITION AND CORROSION ON OR IN ENGINE PARTS.
Inventors
- 👤 E Piasek
- 👤 R Karll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:43
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C07; C07C; C07C275/00; C07C275/04; C07C275/06; C07C275/14; C07F; C07F5/00; C07F5/02; C07F5/022; C07F5/04; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08F8/42; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/066; C10M2221/00; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2010/06; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/015; C10N2050/02; C10N2070/00; C10N2070/02
Claims Analysis
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |