US2437703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the extrusion of fused artificial materials
Assignee: Celanese Corp
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Filing: 1944-01-25
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Granted: 1948-03-16
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Expires: 1964-01-25
Abstract
No abstract record available.
Inventors
- 👤 Moncrieff Robert Wighton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:32
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/04; B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; B29C; B29C48/00; B29C48/25; B29C48/78; B29C48/80; B29C48/83; B29C48/832; B29C48/03; B29C48/05; B29C48/07; B29C48/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1306890A
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US1149256A
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US2029998A
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US2177658A
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US2284865A
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US2215435A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |