US3586537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of xylose
Assignee: F Hoffmann La Roche AG
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Filing: 1969-07-16
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Granted: 1971-06-22
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Expires: 1989-07-16
Abstract
Abstract A PROCESS FOR PRODUCING XYLOSE BY HYDROLYZING A CELLULOSE AND XYLAN CONTAINING MATERIAL WITH AN AQUEOUS SOLUTION OF OXALIC ACID. THE XYLOSE MAY BE HYDROGENATED TO XYLITOL.
Inventors
- 👤 Kurt Steiner
- 👤 Herbert Lindlar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:36
CPC Classifications
C; C07; C07C; C07C31/00; C07C31/18; C13; C13K; C13K13/00; C13K13/002
Claims Analysis
Total Claims: 0
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |