US3595839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions of improved versatility and process of preparing polyureas
Assignee: General Mills Inc
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Filing: 1969-02-05
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Granted: 1971-07-27
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Expires: 1989-02-05
Abstract
Abstract COMPOSITIONS CAPABLE OF BEING CURED UNDER A WIDE VARIETY OF CONDITIONS COMPRISING AN ORGANIC POLYISOCYANATE, A KETIMINE OR ALDIMINE BLOCKED POLYAMINE OR ISOCYANATE DERIVATIVE THEREOF AND AN INORGANIC HALIDE HYDRATE. PROCESS OF PREPARING POLYUREAS FROM SUCH COMPOSITIONS. THE HYDRATE IS OF THE FORMULA: MPXMXP.NH2O WHERE M IS THE METAL ION, X IS THE HALIDE ION, M IS THE VALENCE OF THE METAL ION, P IS 1 OR 2, AND N IS 1 TO 7.
Inventors
- 👤 Kenneth B Stokes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:17
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/3253; C08G18/3256; C08G18/08; C08G18/16; C08G18/22
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |