Patent US3549405A successfully refreshed from Google Patents.
US3549405A
Expired / Lapsed
US
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Iridescent resinous film bodies and a substrate coated therewith
Assignee: Dow Chemical Co
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Filing: 1965-03-29
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Granted: 1970-12-22
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Walter J Schrenk
- 👤 Harold A Walters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:16
CPC Classifications
B; B44; B44F; B44F1/00; B44F1/08; B44F1/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364; Y10T428/24942; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2199597A
Cited
US2582132A
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US2774680A
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US3152950A
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US3170013A
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US3308508A
Cited
US3321804A
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US3442755A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-21 | 1974-06-22 | 1974-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-21 | 1978-06-22 | 1978-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-21 | 1982-06-22 | 1982-12-22 | $7700.00 | Window Closed / Lapsed |