US3790674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(2-pyridyl)piperazine and levodopa composition
Assignee: Bayer Corp
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Filing: 1972-12-21
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Granted: 1974-02-05
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Expires: 1992-12-21
Abstract
Abstract A COMPOSITION COMPRISING 1-(2-PYRIDYL)PIPERAZINE AND LEVODOPA IN A RESPECTIVE WEIGHT RATIO OF FROM 1:320 TO 1:20 CONTROLS TREMO SYMPTOMATIC OF PARKINSONISM IN MAMMALS. PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS OF 1-(2-PYRIDYL) PIPERAZINE CAN BE SUBSTITUTED IN LIEU OF THE PARENT COMPOUND IN THE COMPOSITION.
Inventors
- 👤 R Rodriguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:39
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/495
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |