US2593852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Penicillin amides
Assignee: Bristol Laboratories Inc
•
Filing: 1949-11-16
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Granted: 1952-04-22
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Expires: 1969-11-16
Abstract
No abstract record available.
Inventors
- 👤 Douglas E Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
C; C07; C07D; C07D499/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
AN AMIDE OF PENICILLIN AND A COMPOUND OF THE FORMULA R-NH2, WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, MONOCYCLIC CYCLOALKYL, DI(LOWER) ALKYLAMINO (LOWER) ALKYL, HYDROXY(LOWER) ALKYL, ALPHA - CARBOXY(LOWER) ALKYL, AND BETA-(SULFONIC ACID) (LOWER)ALKYL.
Claim 2
Dependent Claim
54 words
THE PROCESS OF REACTING AN ANHYDRIDE OF PENICILLIN AND A MONOCARBOXYLIC ACID WITH A COMPOUND OF THE FORMULA R-NH2, WHERE R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, MONOCYCLIC CYCLOALKYL, DI(LOWER) ALKYLAMINO (LOWER) ALKYL, HYDROXY (LOWER) ALKYL, ALPHACARBOXY (LOWER) ALKYL, AND BETA-(SULFONIC ACID) (LOWER) ALKYL, TO PRODUCE AN AMIDE OF PENICILLIN.
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) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |