US2280242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Maleic anhydride-ethylene glycolmethallyl alcohol resin
Assignee: Wyeth Holdings LLC
•
Filing: 1939-12-13
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Granted: 1942-04-21
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Expires: 1959-12-13
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Theodore F Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:12
CPC Classifications
C; C08; C08L; C08L67/00; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46; C08G63/50; C09; C09D; C09D167/00; C09D167/06; Y; Y10; Y10S; Y10S260/00; Y10S260/28
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) | 1945-04-20 | 1945-10-20 | 1946-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-04-20 | 1949-10-20 | 1950-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-04-20 | 1953-10-20 | 1954-04-21 | $7700.00 | Window Closed / Lapsed |