Patent US3737426A successfully refreshed from Google Patents.
US3737426A
Expired / Lapsed
US
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Biodegradeable surfactants from starch-derived glycosides
Assignee: United States Department of Agriculture
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Filing: 1970-09-25
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Granted: 1973-06-05
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Expires: 1990-09-25
Abstract
Abstract HIGHLY BIODEGRADABLE SURFACE-ACTIVE PRODUCTS FOR CLEANING AND EMULSIFYING AGENTS AND THE LIKE ARE OBTAINED BY THE CHEMICAL REACTION OF STARCH-DERIVED ETHYLENE AND PROPYLENE POLYOL GLYCOSIDES SUCH AS GLYCOL AND GLYCEROL GLYCOSIDES WITH ETHYLENE AND PROPYLENE OXIDES, LONG-CHAIN EPOXYALKANES, AND CHLOROSULFONIC ACID.
Inventors
- 👤 P Throckmorton
- 👤 D Aelony
- 👤 R Egan
- 👤 F Otey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:53
CPC Classifications
C; C11; C11D; C11D1/00; C11D1/66; C11D1/662; C07; C07H; C07H15/00; C07H15/02; C07H15/04; C07H15/08; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02; Y10S516/03
Claims Analysis
Total Claims: 0
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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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |