Patent US3218264A successfully refreshed from Google Patents.
US3218264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing amine salts of n-substituted pyrrolidone carboxylic acids
Assignee: Individual
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Filing: 1961-10-24
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Granted: 1965-11-16
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Expires: 1981-10-24
Abstract
No abstract record available.
Inventors
- 👤 Katz Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:06
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07D207/277; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/12; C10M2215/22; C10M2215/221; C10M2215/223; C10M2215/224; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A PETROLEUM OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A LUBRICANT PETROLEUM OIL AND CONTAINING A PYRROLIDONE CARBOXYLIC ACID AMINE SALT AS A CORROSION INHIBITOR IN QUANTITIES FROM 200 P.P.M. TO 1,000 P.M.M., SAID AMINE OF AMINE SALT BEING A HIGH MOLECULAR WEIGHT PRIMARY AMINE CONTAINING 10 TO 60 CARBON ATOMS, WATER-INSOLUBLE AND CAPABLE OF FORMING AN OIL SOLUBLE SALT OF SAID ACID AND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AMAINES, ALKYL SUBSTITUTED ARALKYL AMINES AND HYDROXYALKYL SUBSTITUTED ALKYLIMIDAZOLINES AND THE PYRLLIDINE RING OF SAID ACID HAVING ATTACHED TO THE NITROGEN OF THE RING A HIGH MOLECULAR WEIGHT GROUP CONTAINING FROM 10 TO 30 CARBON ATOMS AND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC RADICALS, ALKYL SUBSTITUTED ARALKYL RADICALS, AND ALKYL SUBSTITUTED IMIDAZOLINE RADICALS.
Claim 2
Dependent Claim
129 words
A PETROLEUM OIL COMPOSITION CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A LUBRICANT PETROLEUM OIL AND CONTAINING A PYRROLIDONE CARBOXYLIC ACID AMINE SALT AS A CORROSION INHIBITOR IN QUANTITIES FROM 200 P.P.M. TO 1,000 P.M.M., SAID AMINE OF AMINE SALT BEING A HIGH MOLECULAR WEIGHT PRIMARY AMINE CONTAINING 10 TO 60 CARBON ATOMS, WATER-INSOLUBLE AND CAPABLE OF FORMING AN OIL SOLUBLE SALT OF SAID ACID AND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AMAINES, ALKYL SUBSTITUTED ARALKYL AMINES AND HYDROXYALKYL SUBSTITUTED ALKYLIMIDAZOLINES AND THE PYRLLIDINE RING OF SAID ACID HAVING ATTACHED TO THE NITROGEN OF THE RING A HIGH MOLECULAR WEIGHT GROUP CONTAINING FROM 10 TO 30 CARBON ATOMS AND BEING SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC RADICALS, ALKYL SUBSTITUTED ARALKYL RADICALS, AND ALKYL SUBSTITUTED IMIDAZOLINE RADICALS.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |