US3650995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped articles of latex foam
Assignee: Dow Chemical Co
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Filing: 1968-10-07
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Granted: 1972-03-21
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Expires: 1988-10-07
Abstract
Abstract SHAPED FOAM ARTICLES OF THE REACTIVE LATEXES ARE READILY PREPARED BY CASTLING THE LATEX IN THE FORM OF A WET FROTH COMPRISING A POLYMER HAVING CERTAIN REACTIVE SUBSTITUENT GROUPS SUCH AS CARBOXY AND A WATER-DISPERSIBLE COREACTIVE MATERIAL SUCH AS A MELAMINE-FORMALDEHYDE CONDENSATE ONTO A POROUS MOLD AND CURING AND DRYING THE WET FROTH WITH AN AIR CIRCULATING DRYING MEANS.
Inventors
- 👤 Robert E Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:09
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30
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) | 1975-03-21 | 1975-09-20 | 1976-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-21 | 1979-09-20 | 1980-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-21 | 1983-09-20 | 1984-03-21 | $7700.00 | Window Closed / Lapsed |