US2223527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of artificial materials
Assignee: Celanese Corp
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Filing: 1936-11-03
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Granted: 1940-12-03
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Expires: 1956-11-03
Abstract
No abstract record available.
Inventors
- 👤 Moss William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:45
CPC Classifications
B; B64; B64C; B64C11/00; B64C11/16; B64C11/20; B64C11/205; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B29C33/62; B29C33/66; B29C63/00; B29C63/48; B29D; B29D7/00; B29D7/01; Y; Y10; Y10S; Y10S264/00; Y10S264/50; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028; Y10T156/103
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) | 1943-12-03 | 1944-06-03 | 1944-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-12-03 | 1948-06-03 | 1948-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-12-03 | 1952-06-03 | 1952-12-03 | $7700.00 | Window Closed / Lapsed |