US2967859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for diglucose ureide
Assignee: WR Grace and Co
•
Filing: 1959-05-22
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Granted: 1961-01-10
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Expires: 1979-05-22
Abstract
No abstract record available.
Inventors
- 👤 Lloyd I Osipow
- 👤 Ruth M York
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:27
CPC Classifications
C; C07; C07H; C07H13/00; C07H13/12; A; A23; A23K; A23K50/00; A23K50/10; A23K50/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE PREPARATION OF DIGLUCOSE UREIDE WHICH COMPRISES HEATING AT LEAST TWO MOLES OF GLUCOSE WITH ONE MOLE OF UREA FROM ABOUT 75*C. TO THE BOIL-NG ING POINT OF THE REACTION MIXTURE IN THE PRESENCE OF ABOUT 0.2 TO 1 MOLE OF WATER FOR EACH MOLE OF GLUCOSE AND A STRONG ACID CATALYST, AND RECOVERING THE DIGLUCOSE UREIDE THUS FORMED FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE PREPARATION OF DIGLUCOSE UREIDE WHICH COMPRISES HEATING AT LEAST TWO MOLES OF GLUCOSE WITH ONE MOLE OF UREA FROM ABOUT 75*C. TO THE BOIL-NG ING POINT OF THE REACTION MIXTURE IN THE PRESENCE OF ABOUT 0.2 TO 1 MOLE OF WATER FOR EACH MOLE OF GLUCOSE AND A STRONG ACID CATALYST, AND RECOVERING THE DIGLUCOSE UREIDE THUS FORMED FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |