Patent US3678013A successfully refreshed from Google Patents.
US3678013A
Expired / Lapsed
US
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Process of reacting carboxy-terminated polyalkylene polymer with an imine and resultant product
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1970-04-07
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Granted: 1972-07-18
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Expires: 1990-04-07
Abstract
Abstract THIS INVENTION IS DIRECTED TO POLYMERS FORMED BY THE REACTION OF AZIRIDINES WITH CARBOXY-TERMINATED POLYALKYLENE POLYMERS TO PRODUCE REACTIVE POLYMERS HAVING SUBSTANTIALLY THE SAME MOLECULAR WEIGHT AS THE CHARGE POLYMER.
Inventors
- 👤 Leon Sherwood Minckler Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:50
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/50; C08F8/06; C08F8/30; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1816; C08G18/28; C08G18/67; C08G18/69; C08G18/696; C08G18/70; C08G18/72; C08G18/73; C08G18/74; C08G18/76; C08G18/7614; C08G18/7621; C08G18/7657; C08G18/7664; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/40
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |