US3705209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polymeric compositions
Assignee: Hercules LLC
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Filing: 1970-02-26
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Granted: 1972-12-05
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Expires: 1990-02-26
Abstract
Abstract READILY FLAMMABLE POLYMERS ARE RENDERED FLAME RETARDANT BY THE ADDITION OF 8 TO 20% OF A BROMINE-CONTAINING POLYETHER WHICH IS A POLYMER OF A BROMO-SUBSTITUTED OXETANE OR 3 TO 20% OF THE BROMINE-CONTAINING POLYETHER AND 1 TO 15% OF AN ANTIMONY COMPOUND. WHEN ANTIMONY IS PRESENT THE COMBINED AMOUNT OF BROMINECONTAINING POLYETHER AND ANTIMONY COMPOUND IS AT LEAST 5% BY WEIGHT OF THE TOTAL COMPOSITION.
Inventors
- 👤 Albert S Matlack
- 👤 Robert J Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:39
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/16; C08G65/18; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08K5/04; C08K5/06; C08L101/00; C08L23/10; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L67/00; C08L67/02; C08L67/06; C08L2201/00; C08L2201/02; C08L71/00
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |