US3554936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable high expansion foam composition and process of foaming
Assignee: WR Grace and Co
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Filing: 1968-03-26
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Granted: 1971-01-12
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Expires: 1988-03-26
Abstract
Abstract A FLOWABLE STABLE HIGH EXPANSION FOAM COMPOSITION BASED ON A UREA-FORMALDEHYDE RESIN IS PROVIDED HAVING GOOD STRENGHT PROPERTIES AND A RETARDED SETTING TIME. IN ADDITION A PROCESS OF FOAMING IS PROVIDED WHICH PRODUCES A HIGH STRENGTH, HIGH EXPANSION FOAM FROM A NUMBER OF FOAM SYSTEMS. THIS PROCESS ALSO ENABLES UMPROVED GENERATION AND TRANSPORT OF THE HIGH EXPANSION FOAMS THROUGH ENCLOSED AREAS BY INTERMITTENTLY FOAMING THE AQUEOUS PREFOAM COMPOSITION AND PASSING IT THROUGH AN ENCLOSED AREA.
Inventors
- 👤 George L Braude
- 👤 Joseph A Cogliano
- 👤 Edwin W Lard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:57
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/30; C08J2361/00; C08J2361/20; C08J2361/22; C08J2361/24
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |