US2493625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of penicillin
Assignee: F Hoffmann La Roche AG
•
Filing: 1947-02-26
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Granted: 1950-01-03
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Expires: 1967-02-26
Abstract
No abstract record available.
Inventors
- 👤 Goldberg Moses Wolf
- 👤 Teitel Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:32
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/04; C07D499/14; C07D499/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS OF PRODUCING PENICILLIN SALTS OF ALKALI AND ALKALINE EARTH METALS WHICH COMPRISES REACTING AN ORGANIC AMINE SALT OF PENICILLIN IN AN ORGANIC SOLVENT WITH AN ORGANO METALLO-COMPOUND OF THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL DIALKYL MALONATES, ALKYL ACETOACETATES AND ACETYL ACETONE.
Claim 2
Dependent Claim
47 words
A PROCESS OF PRODUCING PENICILLIN SALTS OF ALKALI AND ALKALINE EARTH METALS WHICH COMPRISES REACTING AN ORGANIC AMINE SALT OF PENICILLIN IN AN ORGANIC SOLVENT WITH AN ORGANO METALLO-COMPOUND OF THE GROUP CONSISTING OF ALKALI METAL AND ALKALINE EARTH METAL DIALKYL MALONATES, ALKYL ACETOACETATES AND ACETYL ACETONE.
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) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |