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US3775332A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of activating per-compounds and solid activated per-compound compositions

Assignee: Henkel AG and Co KGaA
•
Filing: 1971-08-02
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Granted: 1973-11-27
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Expires: 1991-08-02
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Abstract

Abstract THE METHOD OF ACTIVATING AQUEOUS SOLUTIONS OF PERCOMPOUNDS UTILIZING AN ACTIVATOR DIACYLATED 2,5-DIKETOPIPERAZINE AND SOLID ACTIVATED COMPOSITIONS OF SOLID PERCOMPOUNDS AND AN ACTIVATOR DIACYLATED 2,5-PIPERAZINE, SAID ACTIVATOR DIACYLATED 2,5-DIKETOPIPERAZINE HAVING THE FORMULA 2,5-DI(O=),1-R1,3-R4,4-R2,6-R3-PIPERAZINE WHEREIN R1 AND R2 ARE ACYLS OF ORGANIC CARBOXYLIC ACIDS HAVING FROM 2 TO 9 CARBON ATOMS AND R3 AND R4 ARE MEMBERS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL HAVING FROM 1 TO 3 CARBON ATOMS, HYDROXYALKYL HAVING 1 TO 3 CARBON ATOMS, HALOALKYL HAVING 1 TO 3 CARBON ATOMS, NITROALKYL HAVING 1 TO 3 CARBON ATOMS, NITRILOALKYL HAVING 2 TO 4 CARBON ATOMS AND ALKOXYALKYL HAVING 2 TO 5 CARBON ATOMS.

Inventors

  • 👤 A Heins
  • 👤 D Kuehling
  • 👤 H Bloching

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 20:49
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/08; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/22; A61K8/30; A61K8/49; A61K8/494; C; C11; C11D; C11D3/00; C11D3/39; C11D3/3902; C11D3/3905; C11D3/3907; C11D3/3917; C11D3/392; Y; Y10; Y10S; Y10S424/00; Y10S424/03

Claims Analysis

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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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