Patent US3775400A successfully refreshed from Google Patents.
US3775400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Starches modified with n-vinyl compounds
Assignee: Indopco Inc
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Filing: 1972-10-03
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Granted: 1973-11-27
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Expires: 1992-10-03
Abstract
Abstract MODIFIED STARCH PRODUCTS POSSESSING LABILE SUBSTITUENT GROUPS ARE PRODUCED BY REACTING A STARCH BASE WITH NVINYL AMIDO OR N-VINYL IMIDO COMPOUNDS WHEREIN THE NITROGEN TO WHICH THE VINYL GROUP IS ATTACHED IS ADJACENT TO AT LEAST ONE CARBONYL GROUP. THE REACTION IS CARRIED OUT UNDER CONTROLLED CONDITIONS AND, OPTIONALLY, IN THE PRESENCE OF A NETURAL SALT. THE RESULTING INHIBITED AND STABILIZED STARCH PRODUCTS ARE USEFUL AS THICKENERS, BINDERS, AND DUSTING POWDERS.
Inventors
- 👤 O Wurzburg
- 👤 W Jarowenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:21
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/08; C08B31/12; C08B31/125; C08B31/003
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |