Patent US2444263A successfully refreshed from Google Patents.
US2444263A
Expired / Lapsed
US
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Fumaric acid-conjugated hydrocarbon adducts
Assignee: Wyeth Holdings LLC
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Filing: 1945-07-17
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Granted: 1948-06-29
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Expires: 1965-07-17
Abstract
No abstract record available.
Inventors
- 👤 Leslie C Lane
- 👤 Jr Charles H Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:44
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1944731A
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US2047398A
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US1967862A
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US1978062A
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US1993037A
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US2275385A
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US2275383A
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US2344831A
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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) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |