Patent US99100A successfully refreshed from Google Patents.
US2852467A
Expired / Lapsed
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Lubricating oil additive
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1953-12-28
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Granted: 1958-09-16
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jr William C Hollyday
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:49
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
18 words
A PRODUCT FORMED BY REACTING TOGETHER AN ALKYLENE IMINE POLYMER WITH FATTY ACID, SAID PRODUCT HAVING THE FORMULA
Claim 2
Dependent Claim
18 words
A PRODUCT FORMED BY REACTING TOGETHER AN ALKYLENE IMINE POLYMER WITH FATTY ACID, SAID PRODUCT HAVING THE FORMULA
Claim 3
Dependent Claim
33 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A MINERAL LUBRICATING OIL AND ABOUT 0.005 TO 10.0% BY WEIGHT, BASED ON THE TOTAL COMPOSITION OF A PRODUCT IN ACCORDANCE WITH CLAIM 1.
References Cited (Backward Citations)
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US2312082A
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US2622067A
Cited
US2668165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |