US3813356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire-retardant material or conglomerate containing filler consisting essentially of magnesium silicate
Assignee: Individual
•
Filing: 1972-08-22
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Granted: 1974-05-28
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Expires: 1992-08-22
Abstract
Abstract THIS INVENTION CONCERNS A NEW INDUSTRIAL PRODUCT CONSISTING OF A FIRE-RETARDANT MATERIAL OR CONGLOMERATE, CHARACTERIZED BY THE FACT THAT IT CONTAINS 25 TO 80% OF A BINDER CONSISING OF A PHENOL-FORMOL RESIN, AND 30 TO 120% FILLERS, PREFERABLY INORGANIC FILLERS, IN RELATION TO THE WEIGHT OF RESIN, INCLUDING 10 TO 42% MAGNESIUM SILICATE POWDER. THIS MATERIAL MEETS BUILDING SAFETY STANDARDS, NOTABLY FOR HIGH-RISE BUILDINGS.
Inventors
- 👤 H Lievremont
- 👤 A Cominassi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:34
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; B; B29; B29C; B29C44/00; B29C44/34; B29C44/3442; B29C44/36; B29C44/46; B29C44/50
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |