US3547772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite sheet material based on chlorinated olefin polymers and normally crystalline vinylidene chloride polymers
Assignee: Dow Chemical Co
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Filing: 1967-03-22
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Granted: 1970-12-15
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Expires: 1987-03-22
Abstract
No abstract record available.
Inventors
- 👤 David F Schnebelen
- 👤 James R Ryffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:39
CPC Classifications
B; B32; B32B; B32B27/00; C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |