US3207749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of dihydro glucosides
Assignee: Dr Hommel's Chemische Werke und Handelsgesellschaft Mbh
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Filing: 1962-04-19
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Granted: 1965-09-21
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Expires: 1982-04-19
Abstract
No abstract record available.
Inventors
- 👤 Repenning Klaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:05
CPC Classifications
C; C07; C07J; C07J19/00; C07J75/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR THE PRODUCTION OF DIHYDRO DIGOXINE BY HYDROGENATION OF DIGOXINE, WHICH COMPRISES HYDROGENATING IN THE PRESENCE OF RANEY NICKEL AND CONTINUING THE CONTACT OF THE REACTION PRODUCT WITH HYDROGEN, IN THE PRESENCE OF THE CATALYST, FOR 24 HOURS AFTER THE MEASURABLE HYDROGEN ACCEPTANCE OF THE DIGOXINE HAD CEASED.
Claim 2
Dependent Claim
50 words
A PROCESS FOR THE PRODUCTION OF DIHYDRO DIGOXINE BY HYDROGENATION OF DIGOXINE, WHICH COMPRISES HYDROGENATING IN THE PRESENCE OF RANEY NICKEL AND CONTINUING THE CONTACT OF THE REACTION PRODUCT WITH HYDROGEN, IN THE PRESENCE OF THE CATALYST, FOR 24 HOURS AFTER THE MEASURABLE HYDROGEN ACCEPTANCE OF THE DIGOXINE HAD CEASED.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |