Patent US3784591A successfully refreshed from Google Patents.
US3784591A
Expired / Lapsed
US
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Bis(alpha,beta-dihaloalkyl) 1-acyloxyalkane phosphonates
Assignee: Stauffer Chemical Co
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Filing: 1971-06-10
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Granted: 1974-01-08
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Expires: 1991-06-10
Abstract
Abstract THE NEW COMPOUNDS BIS(A,B-DIHALOALKYL) 1-ACYLOXYALKANE-PHOSPHONATES, AND PARTICULARLY BIS(2,3 DIHALOPROPYL) 1-ACYLOXYALKANEPHOSPHONATES ARE DISCLOSED WHICH HAVE BEEN FOUND TO BE EFFECTIVE FLAME RETARDANTS IN VARIOUS POLYMER COMPOSITIONS SUCH AS POLYMETHYL METHACRYLATE POLYSTYRENE.
Inventors
- 👤 A Toy
- 👤 E Uhing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5337; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006
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) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |