US2433842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of drying rayon thread by high-frequency electric currents
Assignee: Akzo Nobel UK PLC
•
Filing: 1944-02-16
•
Granted: 1948-01-06
•
Expires: 1964-02-16
Abstract
No abstract record available.
Inventors
- 👤 Frank H Griffin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/001; D; D02; D02J; D02J13/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2090352A
Cited
US2204603A
Cited
US2226871A
Cited
US2267985A
Cited
US2263681A
Cited
US2303696A
Cited
US2303983A
Cited
US2325652A
Cited
US2390572A
Cited
US2366347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |