US2458451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming nonthermoplastic synthetic resin films
Assignee: EIDP Inc
•
Filing: 1943-06-18
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Granted: 1949-01-04
•
Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 Gordon T Vaala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:57
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/22; B29C43/24; B32; B32B; B32B37/00; B32B37/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20430E
Cited
US2197357A
Cited
US2243560A
Cited
US2277083A
Cited
US2326698A
Cited
US2396098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-04 | 1952-07-05 | 1953-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-04 | 1956-07-05 | 1957-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-04 | 1960-07-05 | 1961-01-04 | $7700.00 | Window Closed / Lapsed |