US2436838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilization of tetraalkyl lead and compositions containing the same
Assignee: Eastman Kodak Co
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Filing: 1944-05-10
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Granted: 1948-03-02
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Expires: 1964-05-10
Abstract
No abstract record available.
Inventors
- 👤 Bramer Harold Von
- 👤 Albert C Ruggles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:46
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/103; C07; C07F; C07F7/00; C07F7/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2067686A
Cited
US2120244A
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US2163640A
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US2219819A
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US2361338A
Cited
US2395382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-02 | 1951-09-01 | 1952-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-02 | 1955-09-01 | 1956-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-02 | 1959-09-01 | 1960-03-02 | $7700.00 | Window Closed / Lapsed |