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US3663540A Expired / Lapsed US ⏱️ 0.0 years remaining

7 - (p-aminomethylphenylthio)acetamido-3 -(pyridiniummethyl)ceph - 3 - em - 4-carboxylate

Assignee: R&L Molecular Research Ltd
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Filing: 1970-06-19
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Granted: 1972-05-16
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Expires: 1990-06-19
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Abstract

Abstract 7 - (P - AMINOMETHYLPHENYLTHIO)ACCETAMIDO-3-(PYRIDNIUMMETHYL)CCPH-3-EM-4-CARBOXYLATE AND ITS NONTOXIC, PHARMACEUTICALLY ACCEPTABLE SALTS ARE VALUABLE AS ANTIBACTERIAL AGENTS, AS NUTRITIONAL SUPPLEMENTS IN ANIMAL FEEDS AND AS THERAPEUTIC AGENTS IN POULTRY AND ANIMALS, INCLUDING MAN, AND ARE ESPECIALLY USEFUL IN THE TREATMENT OF INFECTIONS DISEASES CAUSED BY MANY GRAM-POSITIVE AND GRAM-NEGATIGE BACTERIA. 7 - (P - AMINOMETHYLPHENYLTHIO)ACCTAMIDO - 3 - (PYRIDINIUMMETHYL)CEPH - 3 - EM - 4CARBOXYLATE IS PREPARED, FOR EXAMPLE BY TREATMENT OF 0* C. WITH TRIFLUOROACCETIC ACID OF THE CORRESPONDING COMPOUND IN WHICH IS THE FREE AMINO GROUP IS PROTECTED WITH A TERT.-BUTOXYCARBONYL GROUP.

Inventors

  • 👤 Raymond Urgel Lemieux
  • 👤 Rintje Raap

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 20:19
CPC Classifications
A; A61; A61K; A61K38/00; C; C07; C07D; C07D501/00; C07D501/14; C07D501/16; C07D501/20; C07D501/22

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-16 1975-11-15 1976-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-16 1979-11-15 1980-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-16 1983-11-15 1984-05-16 $7700.00 Window Closed / Lapsed

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