US2951843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tetrahydrosoquinoline biguanides
Assignee: Roche Diagnostics GmbH
•
Filing: 1959-08-06
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Granted: 1960-09-06
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Expires: 1979-08-06
Abstract
No abstract record available.
Inventors
- 👤 Haack Erich
- 👤 Hagedorn Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:48
CPC Classifications
C; C07; C07D; C07D217/00; C07D217/02; C07D217/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
17 words
THE TETRAHYDROISOQUNIOLINE BIGUANIDE COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE TETRAHYDROISOQUINOLINE BIGUANIDE COMPOUND OF THE FORMULA
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |