US3745197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(2,3-dihalopropyl)2-cyanoalkyl-phosphonates
Assignee: Akzo America Inc
•
Filing: 1970-09-21
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Granted: 1973-07-10
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Expires: 1990-09-21
Abstract
Abstract THE NEW COMPOUNDS BIS(2,3-DIHALOPROPYL) 2-CYANOALKYLPHOSPHONATES ARE DISCLOSED WHICH HAVE BEEN FOUND TO BE EFFECTIVE FLAME RETARDANTS FOR PLASTICS SUCH AS POLYMETHYL METHACRYLATE, CELLULOSE ACETATE, AND VISCOSE RAYON.
Inventors
- 👤 A Toy
- 👤 K Eilers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:55
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5353
Claims Analysis
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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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |