US3705199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali treated hydrogenation catalyst
Assignee: Zeneca Inc
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Filing: 1970-04-30
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Granted: 1972-12-05
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Expires: 1990-04-30
Abstract
Abstract AN IMPROVED SUPPORTED NICKEL HYDROGENATION CATALYST IS DESCRIBED AS WELL AS THE METHOD FOR PRODUCING THIS IMPROVED CATALYST AND THE USE OF THE CATALYST IN THE HYDROGENATION OF SUCROSE TO YIELD A MANNITOL ENRICHED HYDROGENATION PRODUCT.
Inventors
- 👤 Albert J De Berardinis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:00
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C; C07; C07C; C07C29/00; C07C29/09; C07C29/10
Claims Analysis
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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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |