Patent US3982272A successfully refreshed from Google Patents.
US3842033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardants for polymers
Assignee: Phillips Petroleum Co
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Filing: 1973-08-08
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Granted: 1974-10-15
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Expires: 1993-08-08
Abstract
Abstract 1. A POLYMERIC COMPOSITION COMPRISING: (A) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYOLEFINS, POLYAMIDES, AND POLYSTYRENES; AND (B) 0.5 TO 15 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYMER OF A COMPOUND HAVING THE GENERAL FORMULA R-O-(1,4-PHENYLENE)-C(-R'')(-R")-(1,4-PHENYLENE)-O-R WHEREIN R IS A 2,3-DIBROMO ALKYL RADICAL CONTAINING 3-10 CARBON ATOMS, AND R'' AND R'''' ARE HYDROGEN OR ALKYL RADICALD HAVING 1-6 CARBON ATOMS.
Inventors
- 👤 D Brady
- 👤 E Zuech
- 👤 R Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:01
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A POLYMERIC COMPOSITION COMPRISING: (A) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYOLEFINS, POLYAMIDES, AND POLYSTYRENES; AND (B) 0.5 TO 15 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYMER OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
40 words
A POLYMERIC COMPOSITION COMPRISING: (A) A POLYMER SELECTED FROM THE GROUP CONSISTING OF POLYOLEFINS, POLYAMIDES, AND POLYSTYRENES; AND (B) 0.5 TO 15 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF SAID POLYMER OF A COMPOUND HAVING THE GENERAL FORMULA
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) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |