Inventor
SCHULZ FRANK
DE22 patents
⚠️ This page may combine multiple inventors who share the name “SCHULZ FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HYDAC FLUIDTECHNIK GMBH
15 patentsUS9631647B2Apr 25, 2017
System for improving the energy efficiency in hydraulic systems, piston accumulator and pressure accumulator provided for such a system
HYDAC FLUIDTECHNIK GMBH8 citations84
US10323657B2Jun 18, 2019
System for improving the energy efficiency in hydraulic systems
HYDAC FLUIDTECHNIK GMBH3 citations73
US10458556B2Oct 29, 2019
Valve device
HYDAC FLUIDTECHNIK GMBH3 citations72
US11442478B2Sep 13, 2022
Pressure control device
HYDAC FLUIDTECHNIK GMBH2 citations69
US9869400B2Jan 16, 2018
Valve device
HYDAC FLUIDTECHNIK GMBH3 citations69
US9791061B2Oct 17, 2017
Valve
HYDAC FLUIDTECHNIK GMBH5 citations67
US11268544B2Mar 8, 2022
Pressure compensator valve
HYDAC FLUIDTECHNIK GMBH0 citations62
US10400912B2Sep 3, 2019
Pilot-operated directional control valve
HYDAC FLUIDTECHNIK GMBH1 citations62
US11307599B2Apr 19, 2022
Device and valve for flow force compensation
HYDAC FLUIDTECHNIK GMBH0 citations51
US12534055B2Jan 27, 2026
System for braking a displacement-controlled drive system
HYDAC FLUIDTECHNIK GMBH0 citations43
US10865891B2Dec 15, 2020
Device for flow force compensation
HYDAC FLUIDTECHNIK GMBH0 citations41
US10781833B2Sep 22, 2020
Hydraulic hybrid system for rotatory applications
HYDAC FLUIDTECHNIK GMBH0 citations41
US10146235B2Dec 4, 2018
Valve device
HYDAC FLUIDTECHNIK GMBH0 citations41
US9709180B2Jul 18, 2017
Directional poppet valve
HYDAC FLUIDTECHNIK GMBH0 citations41
US12577965B2Mar 17, 2026
Electromagnetic pilot-operated proportional pressure control valve
HYDAC FLUIDTECHNIK GMBH0 citations40