Patent US3660318A successfully refreshed from Google Patents.
US3660318A
Expired / Lapsed
US
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Anti-flame polystyrene composition containing flame-retarding halogenated compounds
Assignee: DKS Co Ltd
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Filing: 1970-03-12
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Granted: 1972-05-02
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Expires: 1990-03-12
Abstract
Abstract NOVEL HALOGENIDES OF A REACTION PRODUCT OF A PHENOL, ALCOHOL, FATTY ACID, THIOPHENOL OR MERCAPTANE WITH A GLYCIDYL ETHER, GLYCIDYL ESTER OR GLYCIDYL THIOETHER AND, IF NECESSARY, AN ALKYLENE OXIDE OR ALKYLENE SULFIDE ARE EXCELLENT FLAME-RETARDING AGENTS FOR POLYSTYRENE AND A POLYSTYRENE COMPOSITION CONTAINING SAID HALOGENATED COMPOUND IS SELF-EXTINGUISHABLE AND RESISTANT TO WEATHER AND DISCOLORATION WITH LAPSE OF TIME.
Inventors
- 👤 Akira Taniuchi
- 👤 Takuji Nakano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08L71/00; C08L71/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S521/00; Y10S521/907
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |