Assignee
MAC VALVES INC
US69 patents
Top patents by PatentIndex Score
US4574844AMar 11, 1986
Four-way poppet valve
MAC VALVES INC77 citations95
US6668861B2Dec 30, 2003
Poppet valve having an improved valve seat
MAC VALVES INC40 citations92
US6543481B2Apr 8, 2003
Pilot operated pneumatic valve
MAC VALVES INC24 citations92
US6192937B1Feb 27, 2001
Pilot operated pneumatic valve
MAC VALVES INC48 citations92
US6129115AOct 10, 2000
Self-latching solenoid valve assembly
MAC VALVES INC44 citations92
US6095184AAug 1, 2000
Pressure regulator with integrated control valve, adjustable downstream pressure build and quick exhaust
MAC VALVES INC22 citations92
US5092365AMar 3, 1992
Valve with adjustable valve seat
MAC VALVES INC38 citations92
US4880033ANov 14, 1989
Poppet valve
MAC VALVES INC42 citations92
US4770210ASep 13, 1988
Valve manifold stacking base
MAC VALVES INC45 citations92
US4485846ADec 4, 1984
Four-way valve with integral flow controls, common exhaust, and cartridge type pilot valve
MAC VALVES INC44 citations92
US4453565AJun 12, 1984
Four-way valve with cover mounted pressure regulating and flow control valve
MAC VALVES INC32 citations92
US4298027ANov 3, 1981
Three-way normally closed pilot valve
MAC VALVES INC37 citations92
US4257572AMar 24, 1981
Valve with internal accumulator and check valve
MAC VALVES INC40 citations92
US4195552AApr 1, 1980
Pressure reducer and flow control valve
MAC VALVES INC39 citations92
US8783653B2Jul 22, 2014
Multi-port modular valve with snap-in seat
MAC VALVES INC21 citations91
US5192936AMar 9, 1993
Solenoid
MAC VALVES INC33 citations91
US6772791B2Aug 10, 2004
Directly operated pneumatic valve having an air assist return
MAC VALVES INC29 citations89
US4267862AMay 19, 1981
Directional control valve with flow path through valve spool
MAC VALVES INC52 citations89
US7210501B2May 1, 2007
Directly operated pneumatic valve having a differential assist return
MAC VALVES INC27 citations87
US11248715B1Feb 15, 2022
Proportional solenoid valve
MAC VALVES INC7 citations83
US7735518B2Jun 15, 2010
Valve assembly with dual actuation solenoids
MAC VALVES INC15 citations83
US9395010B2Jul 19, 2016
Multi-port modular valve with snap-in seat
MAC VALVES INC6 citations82
US9074699B2Jul 7, 2015
Multi-port normally open modular valve with thread-in seat
MAC VALVES INC16 citations82
US4522374AJun 11, 1985
Valve spool
MAC VALVES INC21 citations82
US4407323AOct 4, 1983
Cartridge type pilot valve
MAC VALVES INC22 citations82
US4279271AJul 21, 1981
Pressure regulator and flow control valve with pre-exhaust
MAC VALVES INC23 citations82
US4100519AJul 11, 1978
Alignment means for a moveable pole-plunger assembly
MAC VALVES INC26 citations82
US9022069B2May 5, 2015
Solenoid operated valve with constant bleed port
MAC VALVES INC11 citations81
US6772784B1Aug 10, 2004
Proportional pressure regulator having positive and negative pressure delivery capability
MAC VALVES INC19 citations77
US6483688B1Nov 19, 2002
Control circuit for solenoid valve assembly
MAC VALVES INC12 citations74
US4770209ASep 13, 1988
Valve base with integral flow controls
MAC VALVES INC9 citations74
US4579042AApr 1, 1986
Selective air pressure control system for welding and like apparatus
MAC VALVES INC20 citations74
US4566490AJan 28, 1986
Direct solenoid operated valve with minimal tolerance accumulation
MAC VALVES INC12 citations74
US4465100AAug 14, 1984
Four-way stacking valve with common electrical conduit and individual body mounted exhaust flow controls
MAC VALVES INC8 citations74
US4462427AJul 31, 1984
Four-way stacking valve with common electrical conduit and body mounted individual exhaust flow controls that project through the cover
MAC VALVES INC10 citations74
US4438418AMar 20, 1984
Low-wattage solenoid
MAC VALVES INC14 citations74
US4381797AMay 3, 1983
Flow control valve with a non-rising stem
MAC VALVES INC8 citations74
US4271868AJun 9, 1981
Pilot operated pilot valve
MAC VALVES INC17 citations74
US4271864AJun 9, 1981
Pressure regulating valve
MAC VALVES INC12 citations74
US4197874AApr 15, 1980
Pressure regulator and flow control valve with pre-exhaust vent means
MAC VALVES INC19 citations74
US4177840ADec 11, 1979
Pressure regulation and flow control valve with combination needle and check valves
MAC VALVES INC9 citations73
US5526838AJun 18, 1996
Method and valve assembly for controlling a pilot signal
MAC VALVES INC12 citations72
US5499647AMar 19, 1996
Method and valve assembly for controlling a pilot signal
MAC VALVES INC7 citations72
US10774943B2Sep 15, 2020
Modular valve with O-ring valve set
MAC VALVES INC4 citations69
US10753498B2Aug 25, 2020
Flow-through liquid valve
MAC VALVES INC2 citations69
US10578226B2Mar 3, 2020
Valve with two-piece adjustable can with integral pole piece
MAC VALVES INC2 citations69
US11976734B2May 7, 2024
Proportional flow control valve
MAC VALVES INC2 citations66
US10473229B2Nov 12, 2019
Diaphragm valve
MAC VALVES INC6 citations66
US5032704AJul 16, 1991
Multi-pressure control system
MAC VALVES INC20 citations66
US6637451B2Oct 28, 2003
Pneumatic pressure regulator assembly
MAC VALVES INC7 citations65
Showing the top 50 of 69 patents by PatentIndex Score.