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US2425334A
Expired / Lapsed
US
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Modification of filaments, etc., derived from synthetic linear polyamides
Assignee: Imperial Chemical Industries Ltd
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Filing: 1944-01-07
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Granted: 1947-08-12
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Expires: 1964-01-07
Abstract
No abstract record available.
Inventors
- 👤 Mccreath David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:11
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D06M11/00; D06M11/07; D06M11/11; Y; Y10; Y10S; Y10S264/00; Y10S264/56; Y10S264/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2177637A
Cited
US2275008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |