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USPTO Patent Rankings Data through Dec 31, 2025
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Manfred Klerk — 2 Patents

PHPhoenix: 2 patents #55 of 153Top 40%
Hamburg, DE: #1,962 of 5,803 inventorsTop 35%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Manfred Klerk has been granted 2 US patents while listed as an inventor at Phoenix. The first was granted in 1997 and the most recent in April 1998. Manfred Klerk ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Manfred Klerk in Hamburg, DE.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5735457 Rubber mixture for an elastic intermediate layer for a rail support Edgar Bohm, Karl-Heinz Krause, Gerhard Merkmann, Rolf Steinmuller, Klaus Tübel 1998-04-07
5637645 Caoutchouc mixture for the manufacture of rubber products with low-temperature application capability, resistance to oil, low crystallization tendency and high dynamic stressability Gerhard Merkmann, Karl-Heinz Krause 1997-06-10