US2520161A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carboxyalkyl ethers of carbohydrate gums
Assignee: General Mills Inc
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Filing: 1946-04-25
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Granted: 1950-08-29
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Expires: 1966-04-25
Abstract
No abstract record available.
Inventors
- 👤 Owen A Moe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:53
CPC Classifications
C; C08; C08B; C08B37/00; C08B37/006; C08B37/0087; C08B37/0093; C08B37/0096; D; D06; D06M; D06M15/00; D06M15/01; D06M15/03; D06M15/05; D06M15/09; D06P; D06P1/00; D06P1/44; D06P1/46; D06P1/48
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
17 words
A CARBOXYLALKYL ETHER OF A CARBOHYDRATE GUM SELECTED FROM THE GROUP CONSISTING OF GALACTOMANNAN AND GLUCOMANNAN GUMS.
Claim 2
Dependent Claim
17 words
A CARBOXYLALKYL ETHER OF A CARBOHYDRATE GUM SELECTED FROM THE GROUP CONSISTING OF GALACTOMANNAN AND GLUCOMANNAN GUMS.
Claim 3
Dependent Claim
59 words
THE PROCESS OF PRODUCING A CARBOXYETHYL ETHER OF A GUM SELECTED FROM THE GROUP CONSISTING OF GALACTOMANNAN AND GLUCOMANNAN GUMS, WHICH COMPRISES DISPERSING THE GUM IN A SOLUTION OF AN ALKALI, REACTING THE DISPERSED GUM WITH AN ACRYLONITRILE TO FORM THE CYANOETHYL ETHER OF THE GUM AND THEN HYDROLYZING THE CYANOETHYL ETHER TO A CARBOXYETHYL ETHER OF THE GUM.
Claim 4
Dependent Claim
59 words
THE PROCESS OF PRODUCING A CARBOXYETHYL ETHER OF A GUM SELECTED FROM THE GROUP CONSISTING OF GALACTOMANNAN AND GLUCOMANNAN GUMS, WHICH COMPRISES DISPERSING THE GUM IN A SOLUTION OF AN ALKALI, REACTING THE DISPERSED GUM WITH AN ACRYLONITRILE TO FORM THE CYANOETHYL ETHER OF THE GUM AND THEN HYDROLYZING THE CYANOETHYL ETHER TO A CARBOXYETHYL ETHER OF THE GUM.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |