US2622855A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing viscose
Assignee: Akzo Nobel UK PLC
•
Filing: 1949-11-19
•
Granted: 1952-12-23
•
Expires: 1969-11-19
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Kulp
- 👤 Vandenburgh Charles Douglass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:51
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1024168A
Cited
US1349221A
Cited
US1671868A
Cited
US2182131A
Cited
US2368672A
Cited
US2414855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |