US2429469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thioketones containing a cycloalkyl group
Assignee: Eastman Kodak Co
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Filing: 1945-06-01
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Granted: 1947-10-21
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Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Grafton H Keyes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:35
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/60; C07D277/62; C07D277/64; C07D277/84; C07D293/00; C07D293/10; C07D293/12
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) | 1950-10-20 | 1951-04-21 | 1951-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-20 | 1955-04-21 | 1955-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-20 | 1959-04-21 | 1959-10-21 | $7700.00 | Window Closed / Lapsed |