Patent US2502129A successfully refreshed from Google Patents.
US2502129A
Expired / Lapsed
US
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Method of treating filamentary materials
Assignee: Akzo Nobel UK PLC
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Filing: 1944-07-29
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Granted: 1950-03-28
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Expires: 1964-07-29
Abstract
No abstract record available.
Inventors
- 👤 Brabander Camiel De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:36
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0472
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2360108A
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US2421334A
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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) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |