US2452209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose ether plasticized with bis (allyl lactate) maleate
Assignee: Individual
•
Filing: 1944-08-12
•
Granted: 1948-10-26
•
Expires: 1964-08-12
Abstract
No abstract record available.
Inventors
- 👤 Chessie E Rehberg
- 👤 Charles H Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2021121A
Cited
US1979559A
Cited
GB421420A
Cited
US2147242A
Cited
US2049565A
Cited
US2260295A
Cited
US2384117A
Cited
US2379251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-10-26 | 1952-04-26 | 1952-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-10-26 | 1956-04-26 | 1956-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-10-26 | 1960-04-26 | 1960-10-26 | $7700.00 | Window Closed / Lapsed |