Growing community of inventors

Erkrath, Germany

Iduna Matzik

Average Co-Inventor Count = 3.71

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 126

Iduna MatzikDetlef Hollenberg (4 patents)Iduna MatzikHorst Hoeffkes (2 patents)Iduna MatzikEdgar Lieske (2 patents)Iduna MatzikReinhard Mueller (2 patents)Iduna MatzikMechthild Borgerding (2 patents)Iduna MatzikDavid Rose (1 patent)Iduna MatzikKurt Seidel (1 patent)Iduna MatzikAnke Kaczich (1 patent)Iduna MatzikManuela Ehlert (1 patent)Iduna MatzikGuenther Konrad (1 patent)Iduna MatzikChrista Schramm (1 patent)Iduna MatzikIduna Matzik (6 patents)Detlef HollenbergDetlef Hollenberg (32 patents)Horst HoeffkesHorst Hoeffkes (60 patents)Edgar LieskeEdgar Lieske (34 patents)Reinhard MuellerReinhard Mueller (8 patents)Mechthild BorgerdingMechthild Borgerding (2 patents)David RoseDavid Rose (47 patents)Kurt SeidelKurt Seidel (11 patents)Anke KaczichAnke Kaczich (4 patents)Manuela EhlertManuela Ehlert (3 patents)Guenther KonradGuenther Konrad (3 patents)Christa SchrammChrista Schramm (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Henkel Kommanditgesellschaft Auf Aktien (6 from 2,080 patents)


6 patents:

1. 6878170 - 5,6-Dihydroxyindolines as additives for hair dyeing preparations

2. 6719811 - Oxidation colorants for keratin fibers

3. 6569211 - 5,6-dihydroxyindolines as additives for hair dyeing preparations

4. 6045779 - Skin and hair aerosol foam preparations containing an alkyl

5. 5716418 - Coloring of keratin-containing fibers with preparations which contain

6. 5685881 - Aromatic allylaminonitro compounds, hair dye compositions containing

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as of
12/9/2025
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