US2437657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-stable plasticized resin compositions
Assignee: Wyeth Holdings LLC
•
Filing: 1945-01-04
•
Granted: 1948-03-09
•
Expires: 1965-01-04
Abstract
No abstract record available.
Inventors
- 👤 Herbert J West
- 👤 Henry M Enterline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:29
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L61/32; C09; C09D; C09D167/00; C09D167/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1877130A
Cited
GB377265A
Cited
GB395894A
Cited
US2074814A
Cited
US2181231A
Cited
US2218474A
Cited
US2227223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-09 | 1951-09-08 | 1952-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-09 | 1955-09-08 | 1956-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-09 | 1959-09-08 | 1960-03-09 | $7700.00 | Window Closed / Lapsed |