US3677818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for preparing mannose and mannose derivatives
Assignee: TDK Micronas GmbH
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Filing: 1970-04-02
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Granted: 1972-07-18
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Expires: 1990-04-02
Abstract
Abstract METHODS OF RPREFERENTIALLY CRYSTALLIZING MANNOSE BISULIFIDE ADUCTS FROM AQUEOUS MANNOSE-CONTAINING SOLUTIONS. THESE MANNOSE ADDUCTS CAN BE RECOVERED IN PURE FORM. ALSO METHODS FOR REGENERATING SUBSTANTIALLY PURE MANNOSE FROM THE MANNOSE BISULFITE ADDUCTS.
Inventors
- 👤 Ronald L Casebier
- 👤 Franklin W Herrick
- 👤 Kenneth R Gray
- 👤 Frederic A Johnston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:53
CPC Classifications
C; C07; C07H; C07H3/00; C07H3/02; C13; C13K; C13K13/00
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |