US3778392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric starch composition
Assignee: CELLCOR CORP Ltd
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Filing: 1971-11-23
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Granted: 1973-12-11
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Expires: 1991-11-23
Abstract
Abstract A NOVEL POLYMERIC STARCH COMPOSITION AS WELL AS A PROCESS FOR ITS PRODUCTION IS DESCRIBED. THE COMPOSITION IS OBTAINED BY (A) REACTING A HYDROLYSED STARCH WITH AN AMINO AMIDE OR A DIAMIDE, E.G. UREA, (B) REACTING THE PRODUCT OBTAINED WITH AN OLEFINIC OXIDE OR DIOXIDE, AND (C) REACTING THE SECOND PRODUCT WITH A CARBONYL COMPOUND, E.G. FORMALDEHYDE, TO OBTAIN THE FINAL PRODUCT. THIS PRODUCT CURES UNDER DRYING CONDITIONS TO PRODUCE A CROSSLINKED RESIN COMPOSITION WHICH SHOWS EXCELLENT BONDING CHARACTERISTICS TO MANY DIFFERENT MATERIALS AS WELL AS SHOWING EXCELLENT STRENGTH PROPERTIES AND WATER RESISTANCE.
Inventors
- 👤 J Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:32
CPC Classifications
C; C08; C08B; C08B31/00; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/487; C08G18/50; C08G18/5021
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) | 1976-12-10 | 1977-06-11 | 1977-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-10 | 1981-06-11 | 1981-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-10 | 1985-06-11 | 1985-12-11 | $7700.00 | Window Closed / Lapsed |