US2584129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of l-xylose
Assignee: HEINZ M WUEST
•
Filing: 1950-02-15
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Granted: 1952-02-05
•
Expires: 1970-02-15
Abstract
No abstract record available.
Inventors
- 👤 Robert C Hockett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:18
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
IN THE PRODUCTION OF L-XYLOSE FROM D-SORBITOL, THE IMPROVEMENTS WHICH COMPRISES REACTING D-SORBITOL AND FURFURAL AT A TEMPERATURE NOT ABOVE 50 C. IN THE PRESENCE OF AN AMOUNT OF MINERAL ACID SUCH THAT THE CONCENTRATION THEREOF IN THE ENTIRE REACTION MIXTURES IN LESS THAN 1.0 N AND IN THE PRESENCE OF AN AMOUNT OF WATER SUCH THAT THE MOLAR RATIO OF WATER TO SORBITOL IS AT LEAST 2, WHEREBY MONOFURFURYLIDENE SORBITOL IS PRODUCED, OXIDIZING THE MONOFURFURYLIDENE L-XYLOSE TOL THUS OBTAINED TO MONOFURFURYLIDENE SORBIAND RECOVERING L-XYLOSE THEREFROM.
References Cited (Backward Citations)
DE627249C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |