US3833685A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant thermoplastic compositions
Assignee: General Electric Co
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Filing: 1972-03-10
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Granted: 1974-09-03
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Expires: 1992-03-10
Abstract
Abstract NORMALLY FLAMMABLE POLYESTER RESINS (A) ARE RENDERED FLAME-RETARDANT WITHOUT LOSS IN TOUGHNESS BY COMBINATION WITH (B) A FLAME RETARDANT AMOUNT OF (I) AN AROMATIC CARBONATE COPOLYMER, FROM 25 TO 75 WT. PERCENT OF THE REPEATING UNITS COMPRISING CHLORO- OR BROMO-SUBSTITUTED DIHYDRIC PHENOL UNITS; (II) AN AROMATIC CARBONATE HOMOPOLYMER HAVING REPEATING UNITS COMPRISING CHLOROOR BROMO-SUBSTITUTED DIHYDRIC PHENOL UNITS IN COMBINATION WITH AN AROMATIC CARBONATE HOMOPOLYMER HAVING REPEATIG DIHYDRIC PHENOL UNITS; OR (III) A COMBINATION OF (I) WITH AN AROMATIC CARBONATE HOMOPOLYMER HAVING REPEATING DIHYDRIC PHENOL UNITS, AND (C) AN ANTIMONY-CONTAINING COMPOUND.
Inventors
- 👤 A Wambach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0095; C08L; C08L67/00; C08L67/02; C08J2367/00; Y; Y10; Y10S; Y10S260/00; Y10S260/24
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) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |