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US2811555A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of 2-nitroso-5-diethylaminotoluene
Assignee: Eastman Kodak Co
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Filing: 1955-05-02
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Granted: 1957-10-29
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Larive Henri
- 👤 Sarrut Jean Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:57
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/43; C07C211/44; C07C211/52; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C209/62; C07C209/68; C07C213/00; C07C213/02
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) | 1960-10-28 | 1961-04-29 | 1961-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-28 | 1965-04-29 | 1965-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-28 | 1969-04-29 | 1969-10-29 | $7700.00 | Window Closed / Lapsed |