US3769424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of treating dopamine deficiency in brain tissue
Assignee: Merck and Co Inc
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Filing: 1970-10-01
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Granted: 1973-10-30
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Expires: 1990-10-01
Abstract
Abstract THE DOPAMINE CONTENT IN BRAIN TISSURE OF ANIMALS IS INCREASED BY ADMINISTERING TO THE ANIMAL L-DOPA OR ITS SALTS IN COMBINATION WITH L-A-HYDRAZINO-A-LOWER ALKYL-3-4DIHYDROXYPHENYL PROPIONIC ACID OR ITS SALTS OR A-HYDRAZINO-3,4-DIHYDROXYPHENYL PROPIONIC ACID OR ITS SALTS. THE INCREASED DOPAMINE CONTENT IN BRAIN TISSUE TENDS TO ALLEVIATE SOME OF THE SYMPTOMS CAUSED BY PARKINSONISM AND SIMILAR DISEASES.
Inventors
- 👤 G Bayne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:04
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |