Assignee
NUPRO CO
US33 patents
Top patents by PatentIndex Score
US5033505AJul 23, 1991
Pressure regulator and method of assembling same
NUPRO CO57 citations96
US5335691AAug 9, 1994
High pressure diaphragm valve
NUPRO CO65 citations95
US5253671AOct 19, 1993
High pressure diaphragm valve
NUPRO CO48 citations95
US5215286AJun 1, 1993
High pressure diaphragm valve
NUPRO CO106 citations95
US5131627AJul 21, 1992
Diaphragm valve
NUPRO CO67 citations95
US4671490AJun 9, 1987
Diaphragm valve
NUPRO CO79 citations95
US5462081AOct 31, 1995
Excess flow valve
NUPRO CO67 citations94
US4687017AAug 18, 1987
Inverted bellows valve
NUPRO CO94 citations94
US4262880AApr 21, 1981
Plug valve
NUPRO CO67 citations94
US4964423AOct 23, 1990
Check valve
NUPRO CO27 citations92
US4856555AAug 15, 1989
Check valve
NUPRO CO24 citations92
US4840191AJun 20, 1989
Inflatable valve
NUPRO CO31 citations92
US4790348ADec 13, 1988
Low pressure relief valve
NUPRO CO29 citations92
US4750709AJun 14, 1988
Diaphragm valve
NUPRO CO53 citations92
US4732363AMar 22, 1988
Diaphragm valve
NUPRO CO32 citations92
US4637430AJan 20, 1987
Check valve
NUPRO CO42 citations92
US4911412AMar 27, 1990
Valves with improved actuators
NUPRO CO28 citations91
US4684106AAug 4, 1987
Valve
NUPRO CO25 citations91
US4606374AAug 19, 1986
Valve
NUPRO CO42 citations91
US4530373AJul 23, 1985
Pressure relief valve
NUPRO CO43 citations90
US4634099AJan 6, 1987
High pressure inverted bellows valve
NUPRO CO35 citations89
US4263140AApr 21, 1981
In-line fluid filter
NUPRO CO29 citations87
US4659061AApr 21, 1987
Seal ring shutoff stem tip
NUPRO CO20 citations82
US4968003ANov 6, 1990
Diaphragm valve
NUPRO CO20 citations81
US4917357AApr 17, 1990
Diaphragm valve
NUPRO CO21 citations81
US4687180AAug 18, 1987
Metering valve
NUPRO CO19 citations81
US4028254AJun 7, 1977
Fluid filter
NUPRO CO29 citations78
US4018686AApr 19, 1977
Fluid strainer element
NUPRO CO21 citations78
US4659060AApr 21, 1987
Stem tip seal
NUPRO CO13 citations73
US4915353AApr 10, 1990
Diaphragm valve
NUPRO CO19 citations72
US5601713AFeb 11, 1997
Filter systems and apparatus
NUPRO CO8 citations68
US4687181AAug 18, 1987
Metering valve
NUPRO CO14 citations68
US4028248AJun 7, 1977
Fluid filter
NUPRO CO18 citations67