Patent US3480546A successfully refreshed from Google Patents.
US3480546A
Expired / Lapsed
US
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Aqueous foam containing a waterswellable polymer flameproofing composition and process of making same
Assignee: Dow Chemical Co
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Filing: 1964-02-28
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Granted: 1969-11-25
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Expires: 1984-02-28
Abstract
No abstract record available.
Inventors
- 👤 Robert N Bashaw
- 👤 Billy G Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; A; A62; A62D; A62D1/00; A62D1/0071; Y; Y10; Y10S; Y10S521/00; Y10S521/907; Y10S521/911
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) | 1972-11-24 | 1973-05-26 | 1973-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-24 | 1977-05-26 | 1977-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-24 | 1981-05-26 | 1981-11-25 | $7700.00 | Window Closed / Lapsed |