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US3775426A Expired / Lapsed US ⏱️ 0.0 years remaining

(benzimidazol-2-ylthio)-benzoyl-alkyl carboxylic acids and their alkyl esters

Assignee: Wyeth LLC
•
Filing: 1972-07-20
•
Granted: 1973-11-27
•
Expires: 1992-07-20
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Abstract

Abstract WHEREIN THIAZOLO(3,2-A)BENZIMIDAZOLE 2-(R2-OOC-(CH2)N-),3-HO,3-(R3-C6H4-),R1-2,3-DIHYDRO- 2-(R3-C6H4-CO-CH(-(CH2)N-COO-R2)-S-),R1-BENZIMIDAZOLE, OR R1 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGEN, (LOWER)ALKYL, TRIFLUOROMETHYL, NITRO AND AMINO; R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND (LOWER)ALKYL; R3 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HALOGERN, (LOWER)ALKYL, TRIFLUOROMETHYL, NITRO, AMINO, PHENYL, HALOPENYL AND (LOWER)ALKYLPHENYL; N IS AN INTEGER OF FROM 1 TO ABOUT 3; AND THE PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF. NOVEL COMPOUNDS OF FORMULA I AND FORMULA II HAVE BEEN PREPARED WHICH HAVE CNS DEPRESSANT AND ANTITUBERCULAR ACTIVITY:

Inventors

  • 👤 P Wei
  • 👤 S Bell

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 01:58
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04; C07D235/00; C07D235/02; C07D235/04; C07D235/24; C07D235/28

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) 1976-11-26 1977-05-28 1977-11-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-26 1981-05-28 1981-11-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-26 1985-05-28 1985-11-27 $7700.00 Window Closed / Lapsed

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