US2328065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of sheets and similar materials
Assignee: Celanese Corp
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Filing: 1938-09-29
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Granted: 1943-08-31
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Expires: 1958-09-29
Abstract
No abstract record available.
Inventors
- 👤 Dreyfus Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:20
CPC Classifications
B; B29; B29C; B29C71/00; B29C71/02; B29C2071/025; B29K; B29K2001/00; B29K2001/08; B29K2001/12; B29K2995/00; B29K2995/0018; B29K2995/0026; B29K2995/0037; B29K2995/007; B29L; B29L2031/00; B29L2031/778; B29L2031/7782; Y; Y10; Y10S; Y10S264/00; Y10S264/42
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) | 1946-08-30 | 1947-03-01 | 1947-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-08-30 | 1951-03-01 | 1951-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-08-30 | 1955-03-01 | 1955-08-31 | $7700.00 | Window Closed / Lapsed |