Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Holger Kellermann — 2 Patents

TGTiefenbach Control Systems Gmbh: 2 patents #5 of 8Top 65%
Erlangen, DE: #1,195 of 2,818 inventorsTop 45%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Holger Kellermann has been granted 2 US patents while listed as an inventor at Tiefenbach Control Systems Gmbh. All of these patents were granted in 2008. Holger Kellermann ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Holger Kellermann in Erlangen, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7455367 Longwall support control for controlling the movements of longwall support units in the longwall of a mine Ursula Kellermann, Christian Kellermann 2008-11-25
7416369 Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mine Ursula Kellermann, Christian Kellermann 2008-08-26