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US3661966A Expired / Lapsed US ⏱️ 0.0 years remaining

Bisammonium compounds and process for preparing them

Assignee: Hoechst AG
•
Filing: 1969-08-04
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Granted: 1972-05-09
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Expires: 1989-08-04
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Abstract

Abstract BIS-AMMONIUM COMPOUNDS OF THE FORMULA R1-OC-N(-CH2-N(+)(-R2)(-R4)-R3))2 2X(-) WHEREIN R1 IS ALKYL HAVING 1 TO 6 C-ATOMS, ALKOXY HAVING 1 TO 25 CARBON ATOMS, ALKENYOXY HAVING 3 TO 18 C-ATOMS, CYCLOALKOXY HAVING 4 TO 8 C-ATOMS, CYCLOALKYLALKOXY OR ALCKYLCYCLOALKOXY EACH HAVING 5 TO 8 C-ATOMS, AND HALOGENO-ALKOXY OR ALKOXYALKOXY EACH HAVING 1 TO 6 C-ATOMS, R2 IS ALKYL HAVING 1 TO 3 C-ATOMS, R3 IS ALKYL HAVING 1 TO 25 C-ATOMS, ALKENYL HAVING 3 TO 18 C-ATOMS, CYCLOALKYL HAVING 4 TO 8 C-ATOMS OR PHENALKYL HAVING 1 TO 2 C-ATOMS IN THE ALKYLENE RADICAL AND OPTIONALLY ONE CHLORINE ATOM OR A NITRO GROUP IN THE PHENYL NUCLEUS, R4 IS ALKYL HAVING 6 TO 25 C-ATOMS OR ALKENYL HAVING 5 TO 25 C-ATOMS, AND X- IS AN ANION OF A NON-TOXIC ACID AND A PROCESS FOR PREPARING THEM ARE DESCRIBED. THE COMPOUNDS HAVE VALUABLE ENTHELMINTIC PROPERTIES.

Inventors

  • 👤 Wilhelm Bartmann
  • 👤 Dieter Duwel
  • 👤 Volkmar Georgi
  • 👤 Erhard Wolf
  • 👤 Claus Beermann
  • 👤 Franz Landauer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 21:12
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/13; A61K31/14; C; C07; C07C; C07C233/00

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) 1975-05-09 1975-11-08 1976-05-09 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-09 1979-11-08 1980-05-09 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-09 1983-11-08 1984-05-09 $7700.00 Window Closed / Lapsed

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