Patent US2201992A successfully refreshed from Google Patents.
US2201992A
Expired / Lapsed
US
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Treatment of textile yarns and filaments
Assignee: Celanese Corp
•
Filing: 1939-03-25
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Granted: 1940-05-28
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Expires: 1959-03-25
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Camille
- 👤 Schneider George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:15
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292; B; B29; B29D; B29D30/00; B29D30/06; B29D30/38; B29D30/40; Y; Y10; Y10S; Y10S57/00; Y10S57/902
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-05-28 | 1943-11-27 | 1944-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-28 | 1947-11-27 | 1948-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-28 | 1951-11-27 | 1952-05-28 | $7700.00 | Window Closed / Lapsed |