Growing community of inventors

Halstenbek, Germany

Bernhard Bruhn

Average Co-Inventor Count = 1.34

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 = 100

Bernhard BruhnRolf Tenhagen (1 patent)Bernhard BruhnAxel Mikuteit (1 patent)Bernhard BruhnHans-Joachim Ritter (1 patent)Bernhard BruhnHarald Hofmann (1 patent)Bernhard BruhnJose Navarro-Ramil (1 patent)Bernhard BruhnAnke Hoejer (1 patent)Bernhard BruhnJuergen Boeckmann (1 patent)Bernhard BruhnReiner Segebarth (1 patent)Bernhard BruhnBernhard Bruhn (6 patents)Rolf TenhagenRolf Tenhagen (3 patents)Axel MikuteitAxel Mikuteit (3 patents)Hans-Joachim RitterHans-Joachim Ritter (3 patents)Harald HofmannHarald Hofmann (2 patents)Jose Navarro-RamilJose Navarro-Ramil (1 patent)Anke HoejerAnke Hoejer (1 patent)Juergen BoeckmannJuergen Boeckmann (1 patent)Reiner SegebarthReiner Segebarth (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Koh-i-noor Rapidograph, Inc. (5 from 52 patents)

2. Rotring International Gmbh & Co. Kg (1 from 8 patents)


6 patents:

1. D357276 - Ink stylus pen

2. 4729685 - Writing instrument with press mechanism and magnetic catch

3. 4669617 - Pen holder device

4. D287603 - Writing pen

5. D284582 - Fountain pen for artists and calligraphers or the like

6. 4573503 - Ink dropper closure

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as of
12/17/2025
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