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US2727862A
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Mineral oil compositions containing polymers of alkyl n-substituted maleimides
Assignee: ExxonMobil Oil Corp
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Filing: 1952-05-02
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Granted: 1955-12-20
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Expires: 1972-05-02
Abstract
No abstract record available.
Inventors
- 👤 John J Giammaria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:20
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M149/06; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A MINERAL LUBRICATING OIL CONTAINING A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE VISOCITY OF INDEX THEREOF, OF A POLYMERIZED N-ALKYL MALEIMIDE, THE ALKYL SUBSTITUENT OF SAID MALEMIDE HAVING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS.
Claim 2
Dependent Claim
36 words
A MINERAL LUBRICATING OIL CONTAINING A SMALL AMOUNT, SUFFICIENT TO IMPROVE THE VISOCITY OF INDEX THEREOF, OF A POLYMERIZED N-ALKYL MALEIMIDE, THE ALKYL SUBSTITUENT OF SAID MALEMIDE HAVING FROM ABOUT 8 TO ABOUT 18 CARBON ATOMS.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |