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US3833601A Expired / Lapsed US ⏱️ 0.0 years remaining

Certain 4-chlorothiazoles and process for preparing same

Assignee: Bayer AG
•
Filing: 1973-03-02
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Granted: 1974-09-03
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Expires: 1993-03-02
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Abstract

Abstract CHLOROTHIAZOLES HAVING THE FORMULA: 2-R2,4-CL,5-R1-THIAZOLE WHEREIN R1 IS CHLORINE, -CCL3, -CN, -N=CCL3, OR (CL-)X-PHENYL WHERE X IS O, 1 OR 2, AND R2 IS CHLORINE, -CCL3, -CN, -O-((CL-)X-PHENYL) OR (CL-)Y-PHENYL WHERE X IS AS DEFINED ABOVE AND Y IS A NUMBER FROM 0 TO5 ARE PREPARED BY REACTING COMPOUNDS HAVING THE FORMULA: R1-C(-Q)(-CL)-C(-Q)(-CL)-N=C(-R2)-CL WHEREIN R1 AND R2 ARE AS DEFINED ABOVE AND Q IS CHLORINE OR TOGETHER REPRESENT A C-C- BOND; WITH SUBSTANTIALLY THE STOICHIOMETRICALLY NECESSARY QUANTITY OF SULPHUR AT A TEMPERATURE IN THE RANGE OF FROM 150 TO 350*C. SUCH CHLOROTHIAZOLES CAN BE USED FOR THE PRODUCTION OF PLANT PROTECTION AGENTS, ESPECIALLT AS INSECTICIDES.

Inventors

  • 👤 G Beck
  • 👤 H Holtschmidt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 21:42
CPC Classifications
C; C07; C07D; C07D277/00; C07D277/02; C07D277/20; C07D277/32; C07D277/38; C07D277/44; C07D277/48; C07D277/56

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) 1977-09-02 1978-03-04 1978-09-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-02 1982-03-04 1982-09-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-02 1986-03-04 1986-09-03 $7700.00 Window Closed / Lapsed

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