US3786023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant compositions
Assignee: Cities Service Co
•
Filing: 1972-07-24
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Granted: 1974-01-15
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Expires: 1992-07-24
Abstract
Abstract POLYPROPYLENE IS RENDERED FLAME RETARDANT BY THE INCORPORATION OF N,N''-HEXANE-1,6-BIS(5,6-DIBROMONORBORNANE2,3-DICARBOXIMIDE). IF DESIRED, THE FLAME RETARDANCY MAY BE ENHANCED WITH SYNERGISTS, SUCH AS CERTAIN METAL COMPOUNDS (E.G, ANTIMONY TRIOXIDE) AND CERTAIN ORGANIC PHOSPHITES (E.G, DISTERAYL PENTAERYTHRITOL DIPHOSPHITE).
Inventors
- 👤 A Dotson
- 👤 J Newcombe
- 👤 L Wolford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |