Growing community of inventors

Leverkusen, Germany

Udo Holtmann

Average Co-Inventor Count = 2.57

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 = 6

Udo Holtmann ↔ Holger Friedrich (1 patent)Udo Holtmann ↔ Waldemar Czaplik (1 patent)Udo Holtmann ↔ Jürgen Kischkewitz (4 patents)Udo Holtmann ↔ Juergen Kischkewitz (1 patent)Udo Holtmann ↔ Guido Ketteler (1 patent)Udo Holtmann ↔ Huajun Li (1 patent)Udo Holtmann ↔ Kai Bütje (1 patent)Udo Holtmann ↔ Wolfgang Oehlert (0 patent)Udo Holtmann ↔ Birgit Blankemeyer-Menge (0 patent)Udo Holtmann ↔ Alfred Bardoun (0 patent)Udo HoltmannUdo Holtmann (3 patents)Holger FriedrichHolger Friedrich (10 patents)Waldemar CzaplikWaldemar Czaplik (6 patents)Jürgen KischkewitzJürgen Kischkewitz (4 patents)Juergen KischkewitzJuergen Kischkewitz (3 patents)Guido KettelerGuido Ketteler (2 patents)Huajun LiHuajun Li (1 patent)Kai BütjeKai Bütje (1 patent)Wolfgang OehlertWolfgang Oehlert (0 patent)Birgit Blankemeyer-MengeBirgit Blankemeyer-Menge (0 patent)Alfred BardounAlfred Bardoun (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Lanxess Deutschland Gmbh (3 from 383 patents)


3 patents:

1. 11104807 - Preparation of red iron oxide pigment

2. 9428402 - Method for producing finely divided haematite and for producing iron oxide red pigments

3. 7837785 - Process for the preparation of pigment granules and the use thereof

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as of
12/7/2025
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