US3584085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphoramidates
Assignee: Zeneca Inc
•
Filing: 1967-07-18
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Granted: 1971-06-08
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Expires: 1987-07-18
Abstract
Abstract PHOSPHORAMIDATES HAVING THE GENERAL FORMULA R1-O-P(=O)(-O-R2)-N(-R3)-R4 WHEREIN R1 IS ALKYL OR HALOALKYL, R2 IS ALKYL OR HALOALKYL, R3 IS HYDROXYALKYL OR HALOGEN SUBSTITUTED PHENYL, AND R4 IS HYDROGEN, ALKYL, HYDROXYALKYL, OR HALOGEN SUBSTITUTED PHENYL; AND FLAME RETARDANT POLYURETHANES PREPARED WITH PHOSPHORAMIDATES.
Inventors
- 👤 Ludwig A Hartmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:27
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3878; C08G18/3889; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; Y; Y10; Y10S; Y10S521/00; Y10S521/906
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |