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Patent US2232475A successfully refreshed from Google Patents.
US2232475A
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Process of molding polyethylene
Assignee: Imperial Chemical Industries Ltd
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Filing: 1939-04-18
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Granted: 1941-02-18
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Expires: 1959-04-18
Abstract
No abstract record available.
Inventors
- 👤 Renfrew Archibald
- 👤 Davison James William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:41
CPC Classifications
B; B29; B29C; B29C43/00; B29C43/003; B29C43/32; B29C43/52; B29K; B29K2023/00; B29K2023/04; B29K2023/06; Y; Y10; Y10S; Y10S206/00; Y10S206/819; Y10S215/00; Y10S215/04; Y10S425/00; Y10S425/009
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) | 1944-02-18 | 1944-08-19 | 1945-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-02-18 | 1948-08-19 | 1949-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-02-18 | 1952-08-19 | 1953-02-18 | $7700.00 | Window Closed / Lapsed |