Assignee
PERFECTION CORP
37 patents
Top patents by PatentIndex Score
US4282175AAug 4, 1981
Stab-type coupling and method
PERFECTION CORP72 citations95
US4229025AOct 21, 1980
Stab-type coupling
PERFECTION CORP90 citations95
US6142538ANov 7, 2000
Stab-type coupling with conduit inner diameter seal
PERFECTION CORP77 citations93
US5425395AJun 20, 1995
Tapping tee assembly
PERFECTION CORP36 citations92
US5326137AJul 5, 1994
Gas riser apparatus and method
PERFECTION CORP124 citations91
US4712813ADec 15, 1987
Coupling apparatus
PERFECTION CORP107 citations91
US5947532ASep 7, 1999
Stab-type coupling for conduit
PERFECTION CORP29 citations90
US4993670AFeb 19, 1991
Universal bracket assembly
PERFECTION CORP84 citations90
US4809735AMar 7, 1989
Valve and tapping tee apparatus and method
PERFECTION CORP33 citations89
US4730636AMar 15, 1988
Valve and tapping tee apparatus and method
PERFECTION CORP55 citations89
US6371531B1Apr 16, 2002
Stab-type coupling with collet having locking ribs and rotation prevention member
PERFECTION CORP22 citations88
US5779285AJul 14, 1998
Pipe coupling assembly
PERFECTION CORP50 citations88
US5590914AJan 7, 1997
Field assembled gas riser
PERFECTION CORP36 citations88
US4216793AAug 12, 1980
Shutoff valve
PERFECTION CORP35 citations88
US5934711AAug 10, 1999
Mold shot riser element with O-ring sealing
PERFECTION CORP23 citations87
US5839703ANov 24, 1998
Anti-rotation bracket
PERFECTION CORP49 citations86
US5149054ASep 22, 1992
Reinforced polymer valve
PERFECTION CORP31 citations86
US4482170ANov 13, 1984
Gas riser apparatus
PERFECTION CORP46 citations86
US4407526AOct 4, 1983
Tab-type coupling and method
PERFECTION CORP87 citations86
US4083583AApr 11, 1978
Pipe fitting having a non-metallic sealing member
PERFECTION CORP27 citations81
US6565125B2May 20, 2003
Coupling assembly for joining plastic and metal pipes
PERFECTION CORP21 citations80
US4279435AJul 21, 1981
Gas riser apparatus
PERFECTION CORP22 citations78
US4060472ANov 29, 1977
Anode-fitting assembly
PERFECTION CORP30 citations78
US4628965ADec 16, 1986
Stab-type coupling
PERFECTION CORP18 citations73
US4487432ADec 11, 1984
No-hole insertion joint
PERFECTION CORP12 citations73
US7178544B2Feb 20, 2007
Combination shut-off and resetable excess flow valve
PERFECTION CORP9 citations71
US4418888ADec 6, 1983
Angle cock valve
PERFECTION CORP19 citations71
US7125052B2Oct 24, 2006
Crimped gas riser with jacket assembly
PERFECTION CORP9 citations70
US4085950AApr 25, 1978
Gas riser apparatus and method
PERFECTION CORP19 citations70
US3987820AOct 26, 1976
Gas riser apparatus and method
PERFECTION CORP19 citations70
US6371525B1Apr 16, 2002
Gas riser with free rotating plastic riser casing
PERFECTION CORP7 citations69
US4750707AJun 14, 1988
Angle valve
PERFECTION CORP11 citations69
US7093565B2Aug 22, 2006
Heat trap
PERFECTION CORP6 citations60
US6932389B2Aug 23, 2005
Connector with fluid line installation indicator
PERFECTION CORP5 citations60
US6892753B2May 17, 2005
Structure for converting a mechanical joint to a fusion joint
PERFECTION CORP3 citations58
US6851395B2Feb 8, 2005
Heat trap with non-rotating sealing member
PERFECTION CORP4 citations57
US5397101AMar 14, 1995
Ball valve
PERFECTION CORP3 citations50