Patent US3597503A successfully refreshed from Google Patents.
US3597503A
Expired / Lapsed
US
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Cyclic phosphoroamidates and process for making same
Assignee: GE Chemicals Inc
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Filing: 1967-12-06
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Granted: 1971-08-03
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Expires: 1987-12-06
Abstract
Abstract THE INVENTION INCLUDES NEW CYCLIC PHOSPHOROAMIDATES, NEW COMPOSITIONS THEREOF, AND A NEW PROCESS FOR THE MAKING OF THE NEW CYCLIC PHOSPHOROAMIDATES. A TYPICAL NOVEL CYCLIC PHOSPHOROAMIDATE OF THIS INVENTION IS A COMPOUND OF THE FORMULA: 2-(HO-CH2)2-N-1,3,2-DIOXAPHOSPHORINAN-2-ONE WHICH IS AN EFFECTIVE FIRE RETARDANT FOR VARIOUS COMPOSITIONS SUCH AS POLYURETHANE FOAM, FOR EXAMPLE. A COMPOUND OF THIS ILLUSTRATIVE FORMULA MAY BE PREPARED BY REACTING THE DI-FUNCTIONAL AMINE PRECURSOR THE COMPOUND, WITH FORMALDEHYDE. THE ABOVE ILLUSTRATIVE COM POUND ALSO MAY BE EMPLOYED AS AN INTERMEDIATE IN THE PRODUCTION OF OTHER COMPOUNDS AND/OR COMPOSITIONS DESCRIBED IN THE SPECIFICATION.
Inventors
- 👤 Bruce N Wilson
- 👤 Raymond R Hindersinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:21
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657154; 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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |