Patent US2820739A successfully refreshed from Google Patents.
US2820739A
Expired / Lapsed
US
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Antitussive compositions
Assignee: Merck and Co Inc
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Filing: 1956-09-05
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Granted: 1958-01-21
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Expires: 1976-09-05
Abstract
No abstract record available.
Inventors
- 👤 Horace D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:00
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/13; A61K31/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
AN ANTITUSSIVE COMPOSITION COMPRISING IN COMBINATION WITH AN ORALLY ADMINISTRABLE PHARMACEUTICAL CARRIER, A SUBSTANCE SELECTED FROM THE GROUP CONSITING OF SUBSTITUTED B-AMINOETHYL BENZENE COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
27 words
AN ANTITUSSIVE COMPOSITION COMPRISING IN COMBINATION WITH AN ORALLY ADMINISTRABLE PHARMACEUTICAL CARRIER, A SUBSTANCE SELECTED FROM THE GROUP CONSITING OF SUBSTITUTED B-AMINOETHYL BENZENE COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US1073966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |