US2887487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of anhydrous sterile preparations of alkali barbiturates and alkali thiobarbiturates
Assignee: Schenley Industries Inc
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Filing: 1956-06-27
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Granted: 1959-05-19
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Expires: 1976-06-27
Abstract
No abstract record available.
Inventors
- 👤 Henecka Hans
- 👤 Ziegler Fritz
- 👤 Ruggeberg Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:59
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
PROCESS FOR THE PRODUCTION OF ANHYDROUS STERILE PREPARATIONS OF A MEMBER SELECTED FTOM THE GROUP CONSISTING OF ALKALI BARBITURATES AND ALKALI THIOBARBITURATES, WHICH COMPRISES ADMIXING 5% OF A BUFFER SALT WITH AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF BARBITURIC AND THIBARBITURIC ACID, FILTERING THE SOLUTION OBTAINED UNDER STERILE CONDITIONS AND FREEZDRYING THE FILTERED SOLUTION.
Claim 2
Dependent Claim
59 words
PROCESS FOR THE PRODUCTION OF ANHYDROUS STERILE PREPARATIONS OF A MEMBER SELECTED FTOM THE GROUP CONSISTING OF ALKALI BARBITURATES AND ALKALI THIOBARBITURATES, WHICH COMPRISES ADMIXING 5% OF A BUFFER SALT WITH AN AQUEOUS SOLUTION OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF BARBITURIC AND THIBARBITURIC ACID, FILTERING THE SOLUTION OBTAINED UNDER STERILE CONDITIONS AND FREEZDRYING THE FILTERED SOLUTION.
References Cited (Backward Citations)
US1488844A
Cited
US2067317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |