US3368972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High molecular weight mannich bases as engine oil additives
Assignee: Mobil Oil AS
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Filing: 1965-01-06
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Granted: 1968-02-13
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Expires: 1985-01-06
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:59
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/062; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/015; C10N2050/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
62 words
AN IMPROVED LUBRICATING OIL COMPRISING SAID LUBRICATING OIL AND 0.05 TO 25% BY WEIGHT OF SAID LUBRICATING OIL OF A CONDENSATION PRODUCT OF (1) A HIGH MOLECULAR WEIGHT ALKYL-SUBSTITUTED HYDROXYAROMATIC COMPOUND WHEREIN SAID ALKYL SUBSTITUENT HAS A MOLECULAR WEIGHT OF 600-3000, (2) AN AMINE, WHICH CONTAINS AN HN< GROUP, AND (3) AN ALDEHYDE WHEREIN THE RESPECTIVE MOLAR RATIO OF REACTANTS IS 1:0.1-10:0.1-10.
Claim 2
Dependent Claim
62 words
AN IMPROVED LUBRICATING OIL COMPRISING SAID LUBRICATING OIL AND 0.05 TO 25% BY WEIGHT OF SAID LUBRICATING OIL OF A CONDENSATION PRODUCT OF (1) A HIGH MOLECULAR WEIGHT ALKYL-SUBSTITUTED HYDROXYAROMATIC COMPOUND WHEREIN SAID ALKYL SUBSTITUENT HAS A MOLECULAR WEIGHT OF 600-3000, (2) AN AMINE, WHICH CONTAINS AN HN< GROUP, AND (3) AN ALDEHYDE WHEREIN THE RESPECTIVE MOLAR RATIO OF REACTANTS IS 1:0.1-10:0.1-10.
Claim 3
Dependent Claim
26 words
THE LUBRICATING OIL OF CLAIM 1 WHEREIN THE ALKYLSUBSTITUTED HYDROXYAROMATIC COMPOUND IS SELECTED FROM THE GROUP CONSISTING OF AN ALKYL-SUBSTITUTED PHENOL AND AN ALKYL-SUBSTITUTED PHENOL SULFIDE.
References Cited (Backward Citations)
US2336006A
Cited
US2363134A
Cited
US2453850A
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US2410911A
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US2459112A
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US2962442A
Cited
US3036003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |