US3740353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low density low shrink thermoset resin foams
Assignee: Dow Chemical Co
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Filing: 1970-11-09
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Granted: 1973-06-19
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Expires: 1990-11-09
Abstract
Abstract PREVIOUS PROBLEMS OF SHRINKAGE IN THE PREPARATION OF LOW DENSITY THEREMOST RESIN FOAMS FROM THERMO-SETTABLE WATER-IN-RESIN EMULSIONS CONTAINING CERTAIN NONIONIC SURFACTANTS MAY BE ELIMINATED OR SIGNIFICANTLY REDUCED BY INCORPORATING INTO THE EMULSION HYDROCARBOACEOUS DIMENSIONAL CONTROL AGENTS. USEFUL RESINS INCLUDE UNSATURATED POLYESTER RESINS OR POLYMERIZABLE VINYL ESTER RESINS.
Inventors
- 👤 F Patrick
- 👤 D Naivar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:39
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/28; C08J9/283; C08F; C08F299/00; C08F299/02; C08F299/04; C08F299/0478; C08L; C08L67/00; C08L67/06
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |