Patent US2977309A successfully refreshed from Google Patents.
US2977309A
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Lubricating oil containing branched chain alkyl amine derivatives of dicarboxylic acids
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-11-14
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Granted: 1961-03-28
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Expires: 1977-11-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth L Godfrey
- 👤 Donald D Staker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:43
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/288; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A MINERAL LUBRICATING OIL CONTAINING FROM .02-1% BY WEIGHT OF AN OIL SOLUBLE ACIDIC REACTION PRODUCT OBTAINED BY REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF MALIC, SUCCINIC, FUMARIC, MALEIC, TARTARIC, ITACONIC AND ASPARTIC ACIDS AND ANHYDRIDES THEREOF WITH PRIMARY BRANCHED CHAIN ALKYL AMINE CONTAINING 10-24 CARBON ATOMS, THE REACTION BEING CONDUCTED WITHIN THE RANGE OF 120-160*C. WITH FROM 0.5-2.0 MOLES OF THE ACIDIC REAGENT PER MOLE OF AMINE, AND ACCOMPANIED BY FORMATION OF BY-PRODUCT WATER.
Claim 2
Dependent Claim
77 words
A MINERAL LUBRICATING OIL CONTAINING FROM .02-1% BY WEIGHT OF AN OIL SOLUBLE ACIDIC REACTION PRODUCT OBTAINED BY REACTING A MEMBER SELECTED FROM THE GROUP CONSISTING OF MALIC, SUCCINIC, FUMARIC, MALEIC, TARTARIC, ITACONIC AND ASPARTIC ACIDS AND ANHYDRIDES THEREOF WITH PRIMARY BRANCHED CHAIN ALKYL AMINE CONTAINING 10-24 CARBON ATOMS, THE REACTION BEING CONDUCTED WITHIN THE RANGE OF 120-160*C. WITH FROM 0.5-2.0 MOLES OF THE ACIDIC REAGENT PER MOLE OF AMINE, AND ACCOMPANIED BY FORMATION OF BY-PRODUCT WATER.
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |