Inventor
ZAPF FRIEDRICH
DE14 patents
⚠️ This page may combine multiple inventors who share the name “ZAPF FRIEDRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HYDRAULIK RING GMBH
9 patentsUS6336470B1Jan 8, 2002
Directional seat valve
HYDRAULIK RING GMBH24 citations92
US6578606B2Jun 17, 2003
Solenoid valve, in particular, a pressure control valve
HYDRAULIK RING GMBH25 citations90
US6397891B1Jun 4, 2002
Hydraulic valve, in particular, adjustable pressure control valve
HYDRAULIK RING GMBH43 citations90
US6390117B2May 21, 2002
Directional seat valve
HYDRAULIK RING GMBH9 citations73
US7089962B2Aug 15, 2006
Compensation device for compensating volumetric expansion of media, especially of a urea-water solution during freezing
HYDRAULIK RING GMBH10 citations72
US6814103B2Nov 9, 2004
Solenoid valve, in particular, a pressure control valve
HYDRAULIK RING GMBH9 citations71
US6910465B2Jun 28, 2005
Throttle valve especially for high-pressure diesel pumps of injection devices of motor vehicles
HYDRAULIK RING GMBH1 citations51
US6833779B2Dec 21, 2004
Proportional solenoid valve, preferably proportional throttle valve, especially for high pressure diesel pumps of motor vehicles
HYDRAULIK RING GMBH0 citations51
US7013877B2Mar 21, 2006
Pressure control valve, especially for high pressure diesel pumps of injection devices of motor vehicles
HYDRAULIK RING GMBH0 citations41
ZAPF FRIEDRICH
4 patentsUS8201393B2Jun 19, 2012
Exhaust-gas aftertreatment device
ZAPF FRIEDRICH25 citations89
US8266892B2Sep 18, 2012
Calibrated dosing unit, especially of an exhaust gas treatment unit
ZAPF FRIEDRICH15 citations79
US8959895B2Feb 24, 2015
Exhaust-gas aftertreatment device
ZAPF FRIEDRICH4 citations70
US8875491B2Nov 4, 2014
Exhaust gas aftertreatment system and method
ZAPF FRIEDRICH3 citations57