US2731368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile materials
Assignee: Celanese Corp
•
Filing: 1952-02-20
•
Granted: 1956-01-17
•
Expires: 1972-02-20
Abstract
No abstract record available.
Inventors
- 👤 Fortess Fred
- 👤 Duke Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:06
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/347; D06M15/227; D06M15/233; D06M15/244; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/08; D06M2200/00; D06M2200/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2015103A
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US2061570A
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US2167234A
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GB518916A
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US2270285A
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US2298841A
Cited
US2343095A
Cited
US2447878A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |