US2444124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of freeze-drying regenerated cellulose
Assignee: Akzo Nobel UK PLC
•
Filing: 1944-03-04
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Granted: 1948-06-29
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Expires: 1964-03-04
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Wedler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:30
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE20969E
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GB190512642A
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US1861918A
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US1970956A
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US2325652A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-29 | 1951-12-29 | 1952-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-29 | 1955-12-29 | 1956-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-29 | 1959-12-29 | 1960-06-29 | $7700.00 | Window Closed / Lapsed |