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Patent US3401117A successfully refreshed from Google Patents.
US3401117A
Expired / Lapsed
US
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Reaction products of metal petroleum sulfonate, maleic anhydride and an amine as lubricant additives
Assignee: Phillips Petroleum Co
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Filing: 1966-11-03
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Granted: 1968-09-10
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Schiff Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:41
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/18; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3027325A
Cited
US3223630A
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US3189544A
Cited
US3346493A
Cited
US3309316A
Cited
US3272743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |