Patent US3740388A successfully refreshed from Google Patents.
US3740388A
Expired / Lapsed
US
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Preparation of carboxyalkyl derivatives of polygalactomannans
Assignee: General Mills Inc
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Filing: 1970-06-11
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Granted: 1973-06-19
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Expires: 1990-06-11
Abstract
Abstract CARBOXYALKYL ETHERS OF POLYGALACTOMANNANS ARE PREPARED BY FORMING AN ALCOHOL-WATER SLURRY THEREOF ALONG WITH A HALO FATTY ACID REACTANT AND AN ALKALI METAL HYDROXIDE. THE ALCOHOL IS A MONOHYDRIC ALCOHOL OF 2 TO 4 CARBON ATOMS, PREFERABLY ISOPROPYL ALCOHOL. THE PRODUCTS ARE USEFUL AS THICKENING AGENTS WHEN COMPLEXED WITH CALCIUM IONS.
Inventors
- 👤 R Montgomery
- 👤 G Bateson
- 👤 J Corcoran
- 👤 Roy Krbechek Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:40
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; C08B37/0096
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |