US2299145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile materials
Assignee: Celanese Corp
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Filing: 1940-06-26
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Granted: 1942-10-20
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Expires: 1960-06-26
Abstract
No abstract record available.
Inventors
- 👤 Hill Frank Brentnall
- 👤 Alford Maitland Walton
- 👤 Jackson Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:11
CPC Classifications
D; D02; D02J; D02J1/00; D02J1/22; D02J1/225; D01; D01D; D01D10/00; D01D10/04; D01D10/0436; D01D10/0481; D06; D06B; D06B23/00; D06B23/14; D06B23/18; D06B3/00; D06B3/04; D06B3/045
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) | 1945-10-19 | 1946-04-20 | 1946-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-10-19 | 1950-04-20 | 1950-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-10-19 | 1954-04-20 | 1954-10-20 | $7700.00 | Window Closed / Lapsed |