Patent US2371349A successfully refreshed from Google Patents.
US2371349A
Expired / Lapsed
US
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Process of preparing plastic material
Assignee: Monsanto Chemicals Ltd
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Filing: 1941-03-24
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Granted: 1945-03-13
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Expires: 1961-03-24
Abstract
No abstract record available.
Inventors
- 👤 Edward G Norton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:13
CPC Classifications
B; B29; B29B; B29B11/00; B29B11/14; B29B11/06; B29C; B29C49/00; B29C49/071; B29C69/00; B29C2949/00; B29C2949/07; B29C2949/0715; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/0022; B29C48/03; B29C48/06; B29C48/07; B29C48/08; B29C48/12; B29C48/13; B29C48/16; B29C48/17
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) | 1948-03-12 | 1948-09-11 | 1949-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-03-12 | 1952-09-11 | 1953-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-03-12 | 1956-09-11 | 1957-03-13 | $7700.00 | Window Closed / Lapsed |