Patent US3706797A successfully refreshed from Google Patents.
US3706797A
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US
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Bisacyl aminimides
Assignee: Ashland LLC
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Filing: 1969-08-06
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Granted: 1972-12-19
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Expires: 1989-08-06
Abstract
Abstract ISOCYANATE PRECURSORS IN THE FORM OF NOVEL DIAMINIMIDES ARE PROVIDED XXX REACTION OF A DIACYL DICHLORIDE WITH AN UNSYMMETRICAL HYDRAZINE, QUATERNIZING THE RESULTANT BISACYL HYDRAZIDE WHICH IS THEN TITRATED WITH A BASE TO YIELD THE BISACYL AMINIMIDE.
Inventors
- 👤 William J Mckillip
- 👤 Lawrence M Clemens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:11
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/46; C07D207/50; C07C; C07C241/00; C07C241/04; C07C263/00; C07C263/12; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/701; C07C2601/00; C07C2601/04
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |