Patent US2233442A successfully refreshed from Google Patents.
US2233442A
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Polymeric vinylidene chloride article
Assignee: Dow Chemical Co
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Filing: 1938-05-31
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Granted: 1941-03-04
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Expires: 1958-05-31
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:02
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/08; D01F6/10; Y; Y10; Y10S; Y10S264/00; Y10S264/73; Y10S428/00; Y10S428/91; Y10S8/00; Y10S8/09; Y10S8/10; Y10T; Y10T428/00; Y10T428/24; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
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) | 1944-03-03 | 1944-09-02 | 1945-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-03 | 1948-09-02 | 1949-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-03 | 1952-09-02 | 1953-03-04 | $7700.00 | Window Closed / Lapsed |