Growing community of inventors

Menden, Germany

Michael Spiekermann

Average Co-Inventor Count = 2.40

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 = 35

Michael SpiekermannRichard J Rekuc (1 patent)Michael SpiekermannJens Vortmeyer (18 patents)Michael SpiekermannFrank Nachbar (13 patents)Michael SpiekermannJulian Stratmann (11 patents)Michael SpiekermannPeter Hofmann (10 patents)Michael SpiekermannUlf G Rasch (1 patent)Michael SpiekermannRainer Haevescher (7 patents)Michael SpiekermannGeorg Bartsch (1 patent)Michael SpiekermannHenner Schwiebert (0 patent)Michael SpiekermannMichael Spiekermann (2 patents)Richard J RekucRichard J Rekuc (24 patents)Jens VortmeyerJens Vortmeyer (18 patents)Frank NachbarFrank Nachbar (13 patents)Julian StratmannJulian Stratmann (11 patents)Peter HofmannPeter Hofmann (10 patents)Ulf G RaschUlf G Rasch (7 patents)Rainer HaevescherRainer Haevescher (7 patents)Georg BartschGeorg Bartsch (4 patents)Henner SchwiebertHenner Schwiebert (0 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sudhaus Schloss- Und Beschlagtechnik Gmbh & Co. (1 from 10 patents)

2. Firma Sudhaus Schloss- Und Beschlagtechnik Gmbh & Co. (1 from 3 patents)

3. Zf Friedrichshafen Ag (3,444 patents)

4. Lemforder Electronic Gmbh (12 patents)


2 patents:

1. 5343988 - Suitcase or similar container with wheel brake

2. 5136864 - Lock for a slide fastener of a suitcase or similar receptacle

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as of
1/11/2026
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