For the Inventor, By the Inventor

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Itzehoe, Germany

Sihi Industry Consult Gmbh

USPTO Granted Patents = 3

Forward Citations = 53

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4 inventors (with patents filed for the assignee):

Christian Dahmlos (2 out of 3 patents)

Ralf Steffens (2 out of 3 patents)

Dietmar Rook (2 out of 2 patents)

4. Mohamed Barhoum (1 out of 1 patent)

3 patents: Sort by Forward Citations

1. 5924855 - Screw compressor with cooling (1999-07-20),

2. 5904473 - Vacuum pump (1999-05-18),

3. 5713720 - Turbo-machine with a balance piston (1998-02-03),

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USPTO Data Jan 1 1976 - Dec 9 2025

3 Patents

#6 in Itzehoe

#8,301 in Germany

Itzehoe, Germany

Sihi Industry Consult Gmbh

Forward Citations = 53

4 inventors:

Christian Dahmlos (2 out of 3 patents)

Ralf Steffens (2 out of 3 patents)

Dietmar Rook (2 out of 2 patents)

4. Mohamed Barhoum (1 out of 1 patent)

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