US3736349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant agents for thermoplastic products
Assignee: Wyeth Holdings LLC
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Filing: 1970-10-27
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Granted: 1973-05-29
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Expires: 1990-10-27
Abstract
Abstract COMPOUNDS HAVIN THE FORMULA R4-P(+)(-R5)(-R6)-R7 Y(-) WHEREIN R4 IS CARBOXYLALKENYL OR CARBOALKOXYALKENYL, R5, R6 AND R7 ARE, INDIVIDUALLY, ALKYL, ALKENYL, HYDROXY, IMIDAZOL OR CARBOXY SUBSTITUTED ALKYL, ARYYL, ARALKYL, VINYL, HALO, POLYHALO OR NITRO AR-SUBSTITUTED ARALKYL, DIALKYLAMINOALKYL OR CARBOALKOXYALKY RADICALS AND Y IS BROMINE OR CHLORINE.
Inventors
- 👤 H Gillham
- 👤 A Sherr
- 👤 H Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/50; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/54
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |