US3094519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of derivatives of 6-amino-penicillanic acid
Assignee: Bristol Myers Co
•
Filing: 1961-01-16
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Granted: 1963-06-18
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Expires: 1981-01-16
Abstract
No abstract record available.
Inventors
- 👤 Joyce R Luttinger
- 👤 Lein Joseph
- 👤 Gourevitch Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:33
CPC Classifications
C; C07; C07D; C07D499/00; C07D499/21; C07D499/44; C07D499/48; C07D499/58; C07D499/64; C07D499/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR THE PREPRATION OF A-ALKYLAMINOBENZYLPENICILLIN COMPRISING CONTACTING 6-AMINOPENICILLANIC ACID IN AN AQUEOUS ACIDIC REACTION MEDIUM WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
31 words
A PROCESS FOR THE PREPRATION OF A-ALKYLAMINOBENZYLPENICILLIN COMPRISING CONTACTING 6-AMINOPENICILLANIC ACID IN AN AQUEOUS ACIDIC REACTION MEDIUM WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF THE COMPOUNDS HAVING THE FORMULA
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) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |