Patent US2586800A successfully refreshed from Google Patents.
US2586800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the treatment of filamentary materials
Assignee: Celanese Corp
•
Filing: 1946-10-23
•
Granted: 1952-02-26
•
Expires: 1966-10-23
Abstract
No abstract record available.
Inventors
- 👤 William J Elvin
- 👤 Luther A Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:05
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/222; Y; Y10; Y10S; Y10S264/00; Y10S264/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1595486A
Cited
US2080518A
Cited
US2005580A
Cited
US2317448A
Cited
US2194565A
Cited
US2371579A
Cited
US2425037A
Cited
US2450045A
Cited
US2398856A
Cited
US2468081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |