US2436181A
Expired / Lapsed
US
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Regenerated cellulosic pellicle
Assignee: Akzo Nobel UK PLC
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Filing: 1945-09-29
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Granted: 1948-02-17
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Expires: 1965-09-29
Abstract
No abstract record available.
Inventors
- 👤 Charles M Rosser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:20
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/432
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-16 | 1951-08-18 | 1952-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-16 | 1955-08-18 | 1956-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-16 | 1959-08-18 | 1960-02-17 | $7700.00 | Window Closed / Lapsed |