US2431042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining clear films from ethylene polymers
Assignee: EIDP Inc
•
Filing: 1943-09-02
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Granted: 1947-11-18
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Expires: 1963-09-02
Abstract
No abstract record available.
Inventors
- 👤 Henry G Ingersoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:09
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/9145; B29C48/03; B29C48/07; B29C48/08; B29C48/91; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2219700A
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US2212770A
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US2177660A
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US2210771A
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US2205449A
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US2221019A
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US2311818A
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US2309370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-11-17 | 1951-05-19 | 1951-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-11-17 | 1955-05-19 | 1955-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-11-17 | 1959-05-19 | 1959-11-18 | $7700.00 | Window Closed / Lapsed |