Growing community of inventors

Offenbach-Rumpenheim, Germany

Roland Ullman

Average Co-Inventor Count = 1.29

ph-index = 4

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 = 108

Roland UllmanReinhold Eichhorn (1 patent)Roland UllmanHans-Eberhard Heintke (1 patent)Roland UllmanWolfgang Franke (1 patent)Roland UllmanGebhard Braun (1 patent)Roland UllmanHelmut Durr (1 patent)Roland UllmanKlaus Ramspeck (1 patent)Roland UllmanGunther Seidel (1 patent)Roland UllmanGerhard Hildebrand (1 patent)Roland UllmanManfred Ohle (1 patent)Roland UllmanRoland Ullman (4 patents)Reinhold EichhornReinhold Eichhorn (39 patents)Hans-Eberhard HeintkeHans-Eberhard Heintke (17 patents)Wolfgang FrankeWolfgang Franke (16 patents)Gebhard BraunGebhard Braun (14 patents)Helmut DurrHelmut Durr (11 patents)Klaus RamspeckKlaus Ramspeck (9 patents)Gunther SeidelGunther Seidel (7 patents)Gerhard HildebrandGerhard Hildebrand (4 patents)Manfred OhleManfred Ohle (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Braun Aktiengesellschaft (3 from 527 patents)

2. Braun Aktiengesellshaft (1 from 3 patents)


4 patents:

1. D391022 - Dry shaver

2. D355561 - Coffee machine

3. 5235749 - Shaving apparatus

4. D293265 - Electric dry shaver

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as of
1/1/2026
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