US3425942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants containing polymers of aromatic n-3-oxohydrocarbon-substituted acrylamides
Assignee: Lubrizol Corp
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Filing: 1966-09-28
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Granted: 1969-02-04
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Expires: 1986-09-28
Abstract
No abstract record available.
Inventors
- 👤 Lester E Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:59
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/58; C10M2207/00; C10M2207/40; C10M2207/402; C10M2207/404; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/06; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05
Claims Analysis
Total Claims: 0
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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) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |