Patent US2394572A successfully refreshed from Google Patents.
US2394572A
Expired / Lapsed
US
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Decolorization of acrylic and alpha-alkylacrylic acids and their derivatives
Assignee: Eastman Kodak Co
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Filing: 1943-01-07
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Granted: 1946-02-12
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Expires: 1963-01-07
Abstract
No abstract record available.
Inventors
- 👤 Jr William P Utermohlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:37
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/48; C07C67/58; C07C51/00; C07C51/42; C07C51/487; C07C67/60
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) | 1949-02-11 | 1949-08-13 | 1950-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-02-11 | 1953-08-13 | 1954-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-02-11 | 1957-08-13 | 1958-02-12 | $7700.00 | Window Closed / Lapsed |