US2419221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of 2-halogeno-allyl alcohol or 2-halogeno-allyl esters
Assignee: Eastman Kodak Co
•
Filing: 1942-05-11
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Granted: 1947-04-22
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Expires: 1962-05-11
Abstract
No abstract record available.
Inventors
- 👤 William O Kenyon
- 👤 John H Van Campen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:45
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2160941A
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US2160943A
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US2205390A
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US2334358A
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GB540168A
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US2273891A
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US2332460A
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US2308495A
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US2332897A
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US2332900A
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US2388851A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-21 | 1950-10-21 | 1951-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-21 | 1954-10-21 | 1955-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-21 | 1958-10-21 | 1959-04-22 | $7700.00 | Window Closed / Lapsed |