US2300470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of textile and other materials
Assignee: Celanese Corp
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Filing: 1940-10-19
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Granted: 1942-11-03
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Expires: 1960-10-19
Abstract
No abstract record available.
Inventors
- 👤 Richard R Sitzler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:18
CPC Classifications
D; D01; D01F; D01F1/00; D01F1/02; D01F1/04; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/45; D06M11/46; D06M11/47; D06M2101/00; D06M2101/02; D06M2101/04; D06M2101/06; D06M2101/08; D06M2200/00; D06M2200/25
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) | 1945-11-02 | 1946-05-04 | 1946-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-02 | 1950-05-04 | 1950-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-02 | 1954-05-04 | 1954-11-03 | $7700.00 | Window Closed / Lapsed |