Patent US4884398A successfully refreshed from Google Patents.
Patent US2310971A successfully refreshed from Google Patents.
US2310971A
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Stabilized high film strength lubricating oil
Assignee: Lubrizol Development Corp
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Filing: 1940-02-29
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Granted: 1943-02-16
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Expires: 1960-02-29
Abstract
No abstract record available.
Inventors
- 👤 Bert H Lincoln
- 👤 Waldo L Steiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:48
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/023; C10M2207/025; C10M2207/04; C10M2207/08; C10M2207/10; C10M2207/24; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2211/00; C10M2211/02; C10M2211/024; C10M2211/04; C10M2211/042; C10M2211/044; C10M2211/06; C10M2211/08; C10M2215/00; C10M2215/20; C10M2215/202
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1946-02-15 | 1946-08-17 | 1947-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-02-15 | 1950-08-17 | 1951-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-02-15 | 1954-08-17 | 1955-02-16 | $7700.00 | Window Closed / Lapsed |