Patent US2219700A successfully refreshed from Google Patents.
US2219700A
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US
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Film and its manufacture
Assignee: Imperial Chemical Industries Ltd
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Filing: 1937-04-21
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Granted: 1940-10-29
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Expires: 1957-04-21
Abstract
No abstract record available.
Inventors
- 👤 Perrin Michael Wilcox
- 👤 Paton John Greeve
- 👤 Williams Edmond George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:11
CPC Classifications
C; C09; C09J; C09J123/00; B; B29; B29C; B29C55/00; B29C55/02; B29C55/18; C08; C08J; C08J5/00; C08J5/18; C09D; C09D5/00; C09D5/23; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; C08J2325/00; C08J2325/02; C08J2325/04; Y; Y10; Y10S; Y10S264/00; Y10S264/68
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) | 1943-10-29 | 1944-04-29 | 1944-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-29 | 1948-04-29 | 1948-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-29 | 1952-04-29 | 1952-10-29 | $7700.00 | Window Closed / Lapsed |