US3084188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for recovering water-soluble glucoheptonic acid salts
Assignee: Nopco Chemical Co
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Filing: 1959-09-22
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Granted: 1963-04-02
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Expires: 1979-09-22
Abstract
No abstract record available.
Inventors
- 👤 Horn Herman
- 👤 Howard C Klein
- 👤 Griffith Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:14
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/43; C07C51/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
IN A PROCESS OF PREPARING WATER-SOLUBLE GLUCOHEPTONIC ACID SALTS SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METAL SALTS OF SAID GLUCOHEPTONIC ACID BY REACTING TOGETHER APPROXIMATELY EQUIMOLAR QUANTITIES OF D-GLUCOSE AND A WATER-SOLUBLE CYANIDE SALT IN AQUEOUS SOLUTION HAVING AN ALKALINE PH AT TEMPERATURES BETWEEN ROOM TEMPERATURE AND 60*C., THE COMBINATION THEREWITH OF ADJUSTING THE SOLUTION OF THE RESULTING SALT OF GLUCOHEPTONIC ACID TO A CONCENTRATION OF BETWEEN ABOUT 55% TO 75% BY WEIGHT OF SAID SOLUTION AND THEREAFTER INTRODUCING INTO SAID ADJUSTED SOLUTION A WATER-MISCIBLE ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL AND ISOPROPANOL IN AN AMOUNT OF FROM ABOUT 0.25 MOL. TO ABOUT 0.80 ML. PER GRAM OF SAID SALT OF GLUCOHEPTONIC ACID.
Claim 2
Dependent Claim
121 words
IN A PROCESS OF PREPARING WATER-SOLUBLE GLUCOHEPTONIC ACID SALTS SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METAL SALTS OF SAID GLUCOHEPTONIC ACID BY REACTING TOGETHER APPROXIMATELY EQUIMOLAR QUANTITIES OF D-GLUCOSE AND A WATER-SOLUBLE CYANIDE SALT IN AQUEOUS SOLUTION HAVING AN ALKALINE PH AT TEMPERATURES BETWEEN ROOM TEMPERATURE AND 60*C., THE COMBINATION THEREWITH OF ADJUSTING THE SOLUTION OF THE RESULTING SALT OF GLUCOHEPTONIC ACID TO A CONCENTRATION OF BETWEEN ABOUT 55% TO 75% BY WEIGHT OF SAID SOLUTION AND THEREAFTER INTRODUCING INTO SAID ADJUSTED SOLUTION A WATER-MISCIBLE ORGANIC SOLVENT SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL AND ISOPROPANOL IN AN AMOUNT OF FROM ABOUT 0.25 MOL. TO ABOUT 0.80 ML. PER GRAM OF SAID SALT OF GLUCOHEPTONIC ACID.
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) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |