US4390477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diphenyl pentaerythritol diphosphonate
Assignee: General Electric Co
•
Filing: 1982-06-11
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Granted: 1983-06-28
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Expires: 2002-06-11
Abstract
Abstract Flame retardant compositions comprising a polyphenylene ether resin, a styrene resin and a cyclic phosphonate have excellent appearance and physical properties after molding. Especially useful is diphenyl pentaerythritol diphosphonate.
Inventors
- 👤 Robert J. Axelrod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:37
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5357; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657163; C07F9/657181; C08L; C08L25/00; C08L25/02; C08L25/04; C08L2201/00; C08L2201/02; C08L71/00; C08L71/08; C08L71/10; C08L71/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A compound of the formula ##STR6##
Claim 2
Dependent Claim
6 words
A compound of the formula ##STR6##
References Cited (Backward Citations)
JPS5286449A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-27 | 1986-12-27 | 1987-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-27 | 1990-12-27 | 1991-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-27 | 1994-12-27 | 1995-06-28 | $7700.00 | Window Closed / Lapsed |