Patent US3639532A successfully refreshed from Google Patents.
US3639532A
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Esters and/or amides of acids of phosphorus containing a group having the formula roch2nhco-
Assignee: Bayer AG
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Filing: 1968-04-23
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Granted: 1972-02-01
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Expires: 1988-04-23
Abstract
Abstract SULFUR FREE ESTERS AND/OR AMIDES OF ACIDS OF PHOSPHORUS WHICH CONTAIN AT LEAST ONE GROUP HAVING THE FORMULA ROCH2NHCO-, WHEREIN R IS ALKYL, USEFUL AS ADDITIVES FOR RESINS TO IMPACT FLAME-RESISTANCE.
Inventors
- 👤 Gunter Oertel
- 👤 Hans Holtschmidt
- 👤 Wolfgang Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:20
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5317; C08K5/5333; C08K5/5353; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/16; C07F9/165; C07F9/1654; C07F9/1656; C07F9/22; C07F9/24; C07F9/28; C07F9/30; C07F9/32; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/4062; C07F9/4065; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657154; C07F9/6581; C07F9/6584; C07F9/65842; C07F9/65844
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |