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Patent US2681352A successfully refreshed from Google Patents.
US2681352A
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Preparation of alkali metal salts of glucuronic acid from glucuronolactone
Assignee: Corn Products Refining Co
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Filing: 1951-10-30
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Granted: 1954-06-15
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Expires: 1971-10-30
Abstract
No abstract record available.
Inventors
- 👤 Hach William
- 👤 Donald G Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:27
CPC Classifications
C; C07; C07H; C07H7/00; C07H7/02; C07H7/033
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE PROCESS OF PREPARING ALKALI METAL SALTS OF GLUCURONIC ACID WHICH COMPRISES INSTANTANEOUSLY AND INTIMATELY CONTACTING GLUCURONOLACTONE AND AQUEOUS ALKALI METAL HYDROXIDE, AND RECOVERING THE RESULTANT SALT; THE TEMPERATURE DURING THE RESULTANT REACTION NOT EXCEEDING ABOUT 130* F.; THE RATIO OF GLUCURONOLACTONE TO ALKALI METAL HYDROXIDE BEING 1.0 MOLE TO 0.9-1.0 MOLE AND THE CONCENTRATION OF ALKALI HYDROXIDE BEING 0.5 TO 2.0 MOLES PER LITER OF HYDROXIDE SOLUTION.
Claim 2
Dependent Claim
68 words
THE PROCESS OF PREPARING ALKALI METAL SALTS OF GLUCURONIC ACID WHICH COMPRISES INSTANTANEOUSLY AND INTIMATELY CONTACTING GLUCURONOLACTONE AND AQUEOUS ALKALI METAL HYDROXIDE, AND RECOVERING THE RESULTANT SALT; THE TEMPERATURE DURING THE RESULTANT REACTION NOT EXCEEDING ABOUT 130* F.; THE RATIO OF GLUCURONOLACTONE TO ALKALI METAL HYDROXIDE BEING 1.0 MOLE TO 0.9-1.0 MOLE AND THE CONCENTRATION OF ALKALI HYDROXIDE BEING 0.5 TO 2.0 MOLES PER LITER OF HYDROXIDE SOLUTION.
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) | 1957-06-14 | 1957-12-14 | 1958-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-06-14 | 1961-12-14 | 1962-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-06-14 | 1965-12-14 | 1966-06-15 | $7700.00 | Window Closed / Lapsed |