US3740411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble antibacterial compounds
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1971-06-18
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Granted: 1973-06-19
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Expires: 1991-06-18
Abstract
Abstract A NOVEL WATER-SOLUBLE ANTIBACTERIAL COMPOUND OF THE FORMULA 1-((4-O2N-PHENYL)-CH(-OH)-CH(-NH-CO-CH(-CL)2)-CH2-OOC- CH-),(CH2-CO-)PYRIDINIUM X(-) WHEREIN X IS HALOGEN ANION. THESE COMPOUNDS ARE PRODUCED BY REACTING A HALOGENOACETIC ACID ESTER OF CHLORAMPHENICOL OR THIAMPHENICOL REPRESENTED BY THE FORMULA: (4-(O2N-)PHENYL)-CH(-OH)-CH(-NH-CO-CH(-CL)2)-CH2-OOC-CH2-X WHEREIN X IS AS HEREINBEFORE DEFINED, WITH CARBAMOYLPYRIDINE REPRESENTED BY (NH2-CO-)PYRIDINE
Inventors
- 👤 H Akiyama
- 👤 S Okano
- 👤 H Suzuki
- 👤 T Katsura
- 👤 K Maezima
- 👤 T Komatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:20
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/81; C07D213/82
Claims Analysis
Total Claims: 0
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |