Patent US5632751A successfully refreshed from Google Patents.
US2540800A
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Antirust agent
Assignee: ExxonMobil Oil Corp
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Filing: 1948-11-24
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Granted: 1951-02-06
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Expires: 1968-11-24
Abstract
No abstract record available.
Inventors
- 👤 Hastings S Trigg
- 👤 Henry D Norris
- 👤 Ralph V White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:39
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/16; C10M2207/00; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/086; C10M2215/12; C10M2215/24; C10M2215/28; C10N; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AS A NEW COMPOSITION OF MATTER, THE REACTION PRODUCT OBTAINED BY REACTING AN ACIDIC REACTANT SELECTED FROM THE GROUP CONSISTING OF AN ALKENYL SUCCINIC ACID ANHYDRIDE, AN ALKENYL SUCCINIC ACID, AND MIXTURES OF ALKENYL SUCCINIC ACID ANHYDRIDES AND OF ALKENYL SUCCINIC ACIDS WITH A PRIMARY AMINE REACTANT SELECTED FROM THE GROUP CONSISTING OF A PRIMARY AMINE AND A MIXTURE OF PRIMARY AMINES, IN A MOLAR PROPORTION OF AT LEAST 1.25:1, RESPECTIVELY, AND AT A TEMPERATURE VARYING BETWEEN ABOUT 75* C. AND ABOUT 140* C.
Claim 2
Dependent Claim
84 words
AS A NEW COMPOSITION OF MATTER, THE REACTION PRODUCT OBTAINED BY REACTING AN ACIDIC REACTANT SELECTED FROM THE GROUP CONSISTING OF AN ALKENYL SUCCINIC ACID ANHYDRIDE, AN ALKENYL SUCCINIC ACID, AND MIXTURES OF ALKENYL SUCCINIC ACID ANHYDRIDES AND OF ALKENYL SUCCINIC ACIDS WITH A PRIMARY AMINE REACTANT SELECTED FROM THE GROUP CONSISTING OF A PRIMARY AMINE AND A MIXTURE OF PRIMARY AMINES, IN A MOLAR PROPORTION OF AT LEAST 1.25:1, RESPECTIVELY, AND AT A TEMPERATURE VARYING BETWEEN ABOUT 75* C. AND ABOUT 140* C.
References Cited (Backward Citations)
US2182178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |