US3655600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame resistant materials and methods for producing same
Assignee: MORRIS SANKARY
•
Filing: 1970-01-13
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Granted: 1972-04-11
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Expires: 1990-01-13
Abstract
Abstract A FLAME RESISTANT MATERIAL FORMED BY DRY BLENDING A COMBINATION OF FINELY POWDERED ALKALI METAL SILICATE, AN INORGANIC FILLER AND A PLURALITY OF POROUS EXPANDED POLYMER BEADS OR GRANULES WITH A MINOR AMOUNT OF AN ALKALI STABLE SURFACTANT WHICH WETS THE SURFACES OF THE BEADS AND PERMITS THE ADHESION OF THE POWDERED ALKALI METAL SILICATE THERETO, SUCH AS A LONG CHAIN ALKYL PHENOXY POLYETHOXY ETHANOL, AND THEREAFTER COALESCING SAID ALKALI METAL SILICATE WITH HEAT TO FORM AN INTEGRAL POROUS STRUCTURE.
Inventors
- 👤 Stephen S Stevens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:47
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C04B28/26
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |