Patent US3830769A successfully refreshed from Google Patents.
US3830769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retardant polymers
Assignee: Indopco Inc
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Filing: 1972-05-30
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Granted: 1974-08-20
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Expires: 1992-05-30
Abstract
Abstract FIRE RETARDANT POLYMERS CONTAINING MOIETIES DERIVED FROM (1) BROMINATED PHOSPHATE MONOMERS AND (2) HALOGENATED ETHYLENICALLY UNSATURATED MONOMERS, AND AN IMPROVED METHOD FOR PREPARING SUCH POLYMERS WHICH COMPRISES REDUCING THE ACID VALUE OF THE BROMINE PHOSPHATE MONOMER PRIOR TO HEATING SAID BROMINATED PHOSPHATE MONOMER TOGETHER WITH SAID HALOGENATED ETHYLENICALLY UNSATURATED MONOMER IN THE PRESENCE OF A FREE RADICAL INITIATOR.
Inventors
- 👤 Chaudhuri D Ray
- 👤 C Iovine
- 👤 A Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:45
CPC Classifications
D; D06; D06M; D06M14/00; C; C08; C08F; C08F30/00; C08F30/02; Y; Y10; Y10S; Y10S260/00; Y10S260/24; Y10S428/00; Y10S428/92; Y10S428/921
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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |