US3751396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced polyalkylene terephthalate molding resin having reduced burning properties in thin sections
Assignee: Celanese Corp
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Filing: 1970-11-27
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Granted: 1973-08-07
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Expires: 1990-11-27
Abstract
Abstract IMPROVED PRODUCT FOR ELIMINATING DRIPPING OF FLAMING PARTICLES DURING BURNING OF ARTICLES LESS THAN ABOUT 1/8 INCH IN THICKNESS AND MOLDED FROM AN INTIMATE BLEND OF POLYPROPYLENE TEREPHTHALATE OR POLYBUTYLENE TEREPHTHALATE, A REINFORCING AGENT, WHEREIN THE REINFORCING AGENT COMPRISES PARTICLES HAVING A LENGTH TO DIAMETER RATIO OF LESS THAN ABOUT 50:1, AN AROMATIC HALIDE AND A GROUP VB METAL CONTAINING COMPOUND. DRIPPING OF FLAMING PARTICLES IS ELIMINATED BY INCORPORATING INTO THE INTIMATE BLEND OF SUPPLEMENTARY REINFORCING AGENT HAVING A LENGTH TO DIAMETER RATIO OF GREATER THAN ABOUT 50:1.
Inventors
- 👤 J Gall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:53
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/04; 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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |