Growing community of inventors

Mülheim an der Ruhr, Germany

Christoph Speh

Average Co-Inventor Count = 1.00

ph-index = 5

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 = 59

Christoph SpehWerner Lüke (0 patent)Christoph SpehChristoph Speh (9 patents)Werner LükeWerner Lüke (0 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Wik Far East Ltd. (9 from 47 patents)


9 patents:

1. D747038 - Hairstyler

2. D732648 - Vaporizer

3. D714922 - Vaporizer

4. D692182 - Hair styling device holder

5. D652166 - Hair dryer

6. D648071 - Hair dryer

7. D608946 - Hair dryer

8. D592901 - Coffee machine

9. D446605 - Hair clipping machine

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as of
12/10/2025
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