Patent US2425192A successfully refreshed from Google Patents.
US2425192A
Expired / Lapsed
US
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Polymerization of vinyl acetate alone or in mixtures, and products thereof
Assignee: Wyeth Holdings LLC
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Filing: 1944-07-13
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Granted: 1947-08-05
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Expires: 1964-07-13
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:12
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; C08F18/08; C08F20/00; C08F20/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2140921A
Cited
US2356767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-04 | 1951-02-03 | 1951-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-04 | 1955-02-03 | 1955-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-04 | 1959-02-03 | 1959-08-05 | $7700.00 | Window Closed / Lapsed |