US2488588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile materials
Assignee: Celanese Corp
•
Filing: 1945-07-11
•
Granted: 1949-11-22
•
Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Camille
- 👤 George W Seymour
- 👤 George C Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:25
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/80; D06M11/82
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865033A
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US1501895A
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US1738976A
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US2072253A
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US2185695A
Cited
US2300982A
Cited
US2326605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-11-21 | 1953-05-23 | 1953-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-11-21 | 1957-05-23 | 1957-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-11-21 | 1961-05-23 | 1961-11-22 | $7700.00 | Window Closed / Lapsed |