US2602084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 2-alkali carbohydric derivative utilizing azeotropic distillation
Assignee: Ohio State University Research Foundation
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Filing: 1951-01-29
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Granted: 1952-07-01
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Expires: 1971-01-29
Abstract
No abstract record available.
Inventors
- 👤 Kenneth M Gaver
- 👤 Esther P Lasure
- 👤 Levi M Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:44
CPC Classifications
C; C07; C07H; C07H3/00; C07H3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS OF FORMING A CARBOHYDROX DERIVATIVE WHICH COMPRISES THE STEPS OF MIXING A HYDROXIDE OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDRIDE, CESIUM HYDROXIDE, RUBIDIUMHYDROXIDE AND LITHIUM HYDROXIDE WITH GLUCOPYRANOSE POLYMERS IN A NON-AQUEOUS ALCOHOLIC SYSTEM IN WHICH THE ALCOHOL IS SELECTED FROM THE GROUP CONSISTING OF 2-ETHOXY ETHANOL, THE PROPYL ALCOHOLS, THE BUTYL ALCOHOLS, AND THE AMYL ALCOHOLS, AND IN WHICH THE ALCOHOL FORMS AN AZEOTROPE WITH WATER BOILING BETWEEN 80* C. AND 100* C. THUS DISSOLVING THE HYDROXIDE AND DISPERSING THE STARCH IN SAID SOLUTION; AND MAINTAINING THE TEMPERATURE OF THE MIXTURE AT LEAST AS HIGH AS THE BOILING POINT OF THE AZEOTROPE AND SUBSTANTIALLY IN THE RANGE OF BETWEEN 80* C. AND 100* C.
Claim 2
Dependent Claim
124 words
A PROCESS OF FORMING A CARBOHYDROX DERIVATIVE WHICH COMPRISES THE STEPS OF MIXING A HYDROXIDE OF AN ALKALI METAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDRIDE, CESIUM HYDROXIDE, RUBIDIUMHYDROXIDE AND LITHIUM HYDROXIDE WITH GLUCOPYRANOSE POLYMERS IN A NON-AQUEOUS ALCOHOLIC SYSTEM IN WHICH THE ALCOHOL IS SELECTED FROM THE GROUP CONSISTING OF 2-ETHOXY ETHANOL, THE PROPYL ALCOHOLS, THE BUTYL ALCOHOLS, AND THE AMYL ALCOHOLS, AND IN WHICH THE ALCOHOL FORMS AN AZEOTROPE WITH WATER BOILING BETWEEN 80* C. AND 100* C. THUS DISSOLVING THE HYDROXIDE AND DISPERSING THE STARCH IN SAID SOLUTION; AND MAINTAINING THE TEMPERATURE OF THE MIXTURE AT LEAST AS HIGH AS THE BOILING POINT OF THE AZEOTROPE AND SUBSTANTIALLY IN THE RANGE OF BETWEEN 80* C. AND 100* C.
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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |