Patent US2566431A successfully refreshed from Google Patents.
US2566431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid treating yarn cakes by radial liquid flow
Assignee: Celanese Corp
•
Filing: 1948-07-27
•
Granted: 1951-09-04
•
Expires: 1968-07-27
Abstract
No abstract record available.
Inventors
- 👤 John B Steiding
- 👤 Frederick F Sutherland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:53
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/20; B65H2701/00; B65H2701/30; B65H2701/31; B65H2701/50; B65H2701/51; B65H2701/511; B65H2701/5114
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |