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For the Inventor, By the Inventor

Darmstadt, Germany

Wella Aktiengesellschat


USPTO Granted Patents = 2

Forward Citations = 305

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5 inventors (with patents filed for the assignee):

goldMedal Wolfgang R Balzer (2 out of 22 patents)

silverMedal Hans-Juergen Braun (1 out of 75 patents)

bronzeMedal Thomas Clausen (1 out of 38 patents)

4.  Hans Neunhoeffer (1 out of 5 patents)

5.  Stefan Gerstung (1 out of 6 patents)


2 patents:

1. 5663366 - Process for the synthesis of 4,5-diaminopyrazole derivatives useful for (1997-09-02),
2. 5637115 - Oxidation hair dye compositions containing developers, couplers, and AZO (1997-06-10),
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USPTO Data Jan 1 1976 - Sep 29 2026

2 Patents

#76 in Darmstadt

#10,673 in Germany

Darmstadt, DE
Darmstadt, Germany

Wella Aktiengesellschat

Forward Citations = 305

5 inventors:

goldMedal Wolfgang R Balzer (2 out of 22 patents)

silverMedal Hans-Juergen Braun (1 out of 75 patents)

bronzeMedal Thomas Clausen (1 out of 38 patents)

4.  Hans Neunhoeffer (1 out of 5 patents)

5.  Stefan Gerstung (1 out of 6 patents)

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