Growing community of inventors

Schwalbach, Germany

Klaus Oprach

Average Co-Inventor Count = 3.96

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 = 71

Klaus OprachRoland Ullmann (2 patents)Klaus OprachReinhold Eichhorn (2 patents)Klaus OprachMatthias Wetzel (2 patents)Klaus OprachGerhard Schafer (2 patents)Klaus OprachHelmut Durr (2 patents)Klaus OprachPeter Hilfinger (1 patent)Klaus OprachHans-Eberhard Heintke (1 patent)Klaus OprachGebhard Braun (1 patent)Klaus OprachOtto Schweingruber (1 patent)Klaus OprachAlbrecht Jestadt (1 patent)Klaus OprachKarl Trolltsch (1 patent)Klaus OprachBernd Tewes (1 patent)Klaus OprachSigrun Hickel (1 patent)Klaus OprachLuhr Harms (1 patent)Klaus OprachKlaus Oprach (6 patents)Roland UllmannRoland Ullmann (104 patents)Reinhold EichhornReinhold Eichhorn (39 patents)Matthias WetzelMatthias Wetzel (15 patents)Gerhard SchaferGerhard Schafer (13 patents)Helmut DurrHelmut Durr (11 patents)Peter HilfingerPeter Hilfinger (23 patents)Hans-Eberhard HeintkeHans-Eberhard Heintke (17 patents)Gebhard BraunGebhard Braun (14 patents)Otto SchweingruberOtto Schweingruber (7 patents)Albrecht JestadtAlbrecht Jestadt (5 patents)Karl TrolltschKarl Trolltsch (5 patents)Bernd TewesBernd Tewes (3 patents)Sigrun HickelSigrun Hickel (3 patents)Luhr HarmsLuhr Harms (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Braun Aktiengesellschaft (5 from 527 patents)

2. Braun Gmbh (1 from 1,012 patents)


6 patents:

1. 6226869 - Electric shaver

2. 5507095 - Electric shaving apparatus

3. 5289636 - Electric shaving apparatus

4. 4932121 - Long-hair trimming device for dry shaving apparatus

5. 4796359 - Electric shaving apparatus with a pivoted shearing head system

6. 4195650 - Container for storing objects

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as of
12/6/2025
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