Torsten Keller — 20 Patents at Fresenius Medical Care Deutschland Gmbh

Torsten Keller has been granted 20 US patents while listed as an inventor at Fresenius Medical Care Deutschland Gmbh. The first was granted in 2002 and the most recent in June 2025. Torsten Keller ranks #214,803 of 4,157,543 US inventors in our database (top 5.2%). Patent records list Torsten Keller in Namborn, DE.

Patents per Year

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Showing 1–20 of 20 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12329888	Apparatus and method for preparing dialyzate	Stefan Konrad Marterstock, Benedict Glaser	2025-06-17
12280339	Hollow fibre membrane with improved separating efficiency, and production of a hollow fibre membrane with improved separating efficiency	Michael F. Paul, Roland Sander	2025-04-22
12128364	Spinneret, device having a spinneret, method for producing a hollow fiber or hollow fiber membrane by means of a spinneret and filter	Jens-Holger Stahl, Eric Sommer	2024-10-29	$1,536,000
11878099	Apparatus and method for preparing a dialysis solution	Stefan Konrad Marterstock	2024-01-23	$1,330,000
11628407	Hollow fiber membrane having improved diffusion properties	Roland Sander, Igor Raiko, Christian Finkler	2023-04-18	$4,077,000
11478759	Hollow fibre membrane with improved separating efficiency, and production of a hollow fibre membrane with improved separating efficiency	Michael F. Paul, Roland Sander	2022-10-25	$1,286,000
10371209	Reshaped ring for rolling bearing	Heinz Pedrotti, Winfried Ott	2019-08-06
9421501	Delamination free membrane	Christian Finkler, Rainer Fislage, Igor Raiko, Roland Sander	2016-08-23	$2,955,000
9254464	Filter module	Franz Kugelmann, Wolfgang Wehmeyer	2016-02-09	$3,078,000
9149770	Hollow fiber capillary membrane and method for the production thereof	Rainer Fislage, Klaus Heilmann, Holger Lichau, Igor Raiko, Roland Sander	2015-10-06	$8,273,000
8840314	Method for producing a flanged disk for a spherical roller bearing and a spherical roller bearing having a flanged disk produced according to the method	Juergen Biedenbach, Manfred Gessner	2014-09-23
8591119	Method for producing a flanged disk for a spherical roller bearing and spherical roller bearing having a flanged disk produced according to the method	Juergen Biedenbach, Manfred Gessner	2013-11-26
8490283	Hollow-fiber spinning nozzle and method	Jens-Holger Stahl	2013-07-23	$6,972,000
7536929	Ball screw and method for producing a spindle nut, in particular of a ball screw	Jurgen Osterlanger, Rudolf Bauer	2009-05-26
7393195	Hollow-fiber spinning nozzle	Jens-Holger Stahl	2008-07-01	$8,064,000
7107805	Method for the production of a spindle nut of a spherical thread drive mechanism	Jurgen Osterlanger, Manfred Kraus, Thomas Motz	2006-09-19
7069142	Method for operating an internal combustion engine	Sinan Yilman, Boris Koehler, Christian J. Schuler	2006-06-27	$2,831,000
7043351	Method for operating an internal combustion engine	Alex Grossmann, Torsten Baumann, Sinan Yilman, Boris Koehler, Bruno Zeyer	2006-05-09	$1,662,000
6705289	Device and method for determining the firing angle	Martin Haussmann, Jens Neuberg, Joerg Kerner, Volker Gandert	2004-03-16
6487996	Device for adjusting the angle of rotation of a camshaft with regard to the crankshaft of a reciprocating internal combustion engine	Thomas Motz, Jochen Auchter	2002-12-03

Torsten Keller — 20 Patents

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