US2868847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenation of mono-and disaccharides to polyols
Assignee: Engelhard Industries Inc
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Filing: 1956-10-05
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Granted: 1959-01-13
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 Gilman Gertrude
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:22
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE PRODUCTION OF A POLYHYDRIC ALCOHOL WHICH COMPRISES TREATING A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONO- AND DISACCHARIDES WITH HYDROGEN AT SUPERATMOSPHERIC PRESSURE AND A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 400*C., IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF RUTHENIUM AND A COMPOUND THEREOF.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE PRODUCTION OF A POLYHYDRIC ALCOHOL WHICH COMPRISES TREATING A SOLUTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONO- AND DISACCHARIDES WITH HYDROGEN AT SUPERATMOSPHERIC PRESSURE AND A TEMPERATURE IN THE RANGE OF ABOUT 50 TO 400*C., IN THE PRESENCE OF A CATALYST SELECTED FROM THE GROUP CONSISTING OF RUTHENIUM AND A COMPOUND THEREOF.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-12 | 1962-07-14 | 1963-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-12 | 1966-07-14 | 1967-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-12 | 1970-07-14 | 1971-01-13 | $7700.00 | Window Closed / Lapsed |