Patent US2415564A successfully refreshed from Google Patents.
US2415564A
Expired / Lapsed
US
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Impregnation of regenerated cellulose fibers
Assignee: Rohm and Haas Co
•
Filing: 1942-05-19
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Granted: 1947-02-11
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Expires: 1962-05-19
Abstract
No abstract record available.
Inventors
- 👤 George S Radford
- 👤 Ira S Hurd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:04
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/41
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1734516A
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US2155067A
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US2088227A
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US2175183A
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US2208632A
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US2118036A
Cited
GB484691A
Cited
US2161805A
Cited
US2137465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-02-10 | 1950-08-12 | 1951-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-02-10 | 1954-08-12 | 1955-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-02-10 | 1958-08-12 | 1959-02-11 | $7700.00 | Window Closed / Lapsed |