US3824200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flameproof and fireproof resinous foams
Assignee: Individual
•
Filing: 1971-10-06
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Granted: 1974-07-16
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Expires: 1991-10-06
Abstract
Abstract FLAMEPROOF AND FIREPROOF RESINOUS FOAMS ARE PRODUCED BY REACTING TOGETHER THE FOLLOWING ADMIXED COMPONENTS: (A) THE LIQUID POLYMERIC PRODUCTS OF A HEATD BLEND OF A REDUCING SUGAR, PHOSPHORIC ACID, ONE OR MORE FLUIDIFIERS AND, PREFERABLY, A POLYHYDRIC PHENOL HAVING AT LEAST TWO HYDROXY GROUPS IN A META POSITION; (2) AT LEAST ONE FOAM ING, GELLING AND HARDENING AGENT, SUCH AS AN ORGANIC POLYISOCYANATE AND/OR A POWDER OF A POLYVALENT METAL AOVE CADMIUM IN THE ELECTROMOTIVE SERIES; AND PREFERABLY,BOVE AN DDITIONAL HARDENER, SUCH AS FORMALDEHYDE, FURFURYL ALCOHOL, OR BENDS OR POLYMERS OF FURFURYL ALCOHOL AND FORMALDEHYDE.
Inventors
- 👤 R Matalon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:07
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6461; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |