Patent US3558669A successfully refreshed from Google Patents.
US3558669A
Expired / Lapsed
US
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Organic compounds containing 2 to 4 azidoformate groups
Assignee: Hercules LLC
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Filing: 1964-12-14
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Granted: 1971-01-26
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Expires: 1984-12-14
Abstract
Abstract AN AZIODOFORMATE HAVING THE FORMULA R(-OOC-N3)X WHERE X IS A WHOLE NUMBER OF 2 TO 4 AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYLENE, CYCLOALKYLENE, ARYLENE, ARYLENEDIALKYLENE, ALKYLENE, CYCLOALKYLENE, DIALKYLENE, OXYDIALKYLENE, THIODIALKYLENE, ALKYLENE POLY (OXYALKYLENE), ALKYLENE BIS (POLYOXYALKYLENE), AND CARBYL TETRAKIS (ALKYLENE OXYALKYLENE), SAID R RADICALS CONTAINING AT LEAST ONE CARBON ATOM PER AXIODOFORMATE GROUP. THE COMPOUNDS ARE USEFUL FOR CROSS-LINKING POLYMERS.
Inventors
- 👤 David S Breslow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
C; C07; C07C; C07C247/00; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/27; C08K5/28
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |