US2842541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyanoethyl ethers
Assignee: Monsanto Chemicals Ltd
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Filing: 1954-07-27
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Granted: 1958-07-08
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Expires: 1974-07-27
Abstract
No abstract record available.
Inventors
- 👤 Glen E Journeay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:12
CPC Classifications
C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B11/155; C08B31/00; C08B31/08; C08B31/12; C08B31/125; Y; Y10; Y10S; Y10S8/00; Y10S8/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
THE PROCESS OF PREPARING CYANOETHYL ETHERS OF POLYSACCHARIDES WHICH COMPRISES REACTING, AT A TEMPERATURE FROM ABOUT 25*C TO ABOUT 140*C., A POLYSACCHARIDE CHOSEN FROM THE GROUP CONSISTING OF CELLULOSE AND STARCH WITH FROM ABOUT 5 PARTS TO ABOUT 40 PARTS BY WEIGHT OF B,B''-OXYDIPROPIONITRILE PER PART OF THE POLYSACCHARIDE IN THE PRESENCE OF WATER CONTAINING FROM ABOUT 0.1 TO ABOUT 20% BY WEIGHT OF AN ALKALI METAL HYDROXIDE, THE AMOUNT OF SAID WATER BEING WITHIN THE RANGE FROM ABOUT 20% TO ABOUT 400% BY WEIGHT OF THE POLYSACCHARIDE.
Claim 2
Dependent Claim
88 words
THE PROCESS OF PREPARING CYANOETHYL ETHERS OF POLYSACCHARIDES WHICH COMPRISES REACTING, AT A TEMPERATURE FROM ABOUT 25*C TO ABOUT 140*C., A POLYSACCHARIDE CHOSEN FROM THE GROUP CONSISTING OF CELLULOSE AND STARCH WITH FROM ABOUT 5 PARTS TO ABOUT 40 PARTS BY WEIGHT OF B,B''-OXYDIPROPIONITRILE PER PART OF THE POLYSACCHARIDE IN THE PRESENCE OF WATER CONTAINING FROM ABOUT 0.1 TO ABOUT 20% BY WEIGHT OF AN ALKALI METAL HYDROXIDE, THE AMOUNT OF SAID WATER BEING WITHIN THE RANGE FROM ABOUT 20% TO ABOUT 400% BY WEIGHT OF THE POLYSACCHARIDE.
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) | 1961-07-07 | 1962-01-06 | 1962-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-07 | 1966-01-06 | 1966-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-07 | 1970-01-06 | 1970-07-08 | $7700.00 | Window Closed / Lapsed |