Assignee
PERFECTION CORP
US·37 granted patents·2 pending applications·1,330 citations·filing 1974–2007
Top patents by PatentIndex Score
39 records- 0194US4229025AStab-type couplingPERFECTION CORP·Filed 1978·Granted Oct 21, 1980·90 cites·14 claims
- 0292US4282175AStab-type coupling and methodPERFECTION CORP·Filed 1979·Granted Aug 4, 1981·72 cites·2 claims
- 0390US5326137AGas riser apparatus and methodPERFECTION CORP·Filed 1993·Granted Jul 5, 1994·124 cites·35 claims
- 0490US4712813ACoupling apparatusPERFECTION CORP·Filed 1986·Granted Dec 15, 1987·107 cites·15 claims
- 0588US6142538AStab-type coupling with conduit inner diameter sealPERFECTION CORP·Filed 1998·Granted Nov 7, 2000·77 cites·24 claims
- 0687US4993670AUniversal bracket assemblyPERFECTION CORP·Filed 1984·Granted Feb 19, 1991·84 cites·15 claims
- 0785US4730636AValve and tapping tee apparatus and methodPERFECTION CORP·Filed 1986·Granted Mar 15, 1988·55 cites·33 claims
- 0884US4407526ATab-type coupling and methodPERFECTION CORP·Filed 1981·Granted Oct 4, 1983·87 cites·21 claims
- 0982US4216793AShutoff valvePERFECTION CORP·Filed 1978·Granted Aug 12, 1980·35 cites·12 claims
- 1077US4482170AGas riser apparatusPERFECTION CORP·Filed 1981·Granted Nov 13, 1984·46 cites·16 claims
- 1176US5779285APipe coupling assemblyPERFECTION CORP·Filed 1996·Granted Jul 14, 1998·50 cites·18 claims
- 1276US5425395ATapping tee assemblyPERFECTION CORP·Filed 1994·Granted Jun 20, 1995·36 cites·18 claims
- 1375US4060472AAnode-fitting assemblyPERFECTION CORP·Filed 1975·Granted Nov 29, 1977·30 cites·8 claims
- 1474US5839703AAnti-rotation bracketPERFECTION CORP·Filed 1997·Granted Nov 24, 1998·49 cites·14 claims
- 1574US4809735AValve and tapping tee apparatus and methodPERFECTION CORP·Filed 1987·Granted Mar 7, 1989·33 cites·14 claims
- 1673US6565125B2Coupling assembly for joining plastic and metal pipesPERFECTION CORP·Filed 2001·Granted May 20, 2003·21 cites·32 claims
- 1772US5590914AField assembled gas riserPERFECTION CORP·Filed 1995·Granted Jan 7, 1997·36 cites·13 claims
- 1866US5149054AReinforced polymer valvePERFECTION CORP·Filed 1990·Granted Sep 22, 1992·31 cites·30 claims
- 1966US4083583APipe fitting having a non-metallic sealing memberPERFECTION CORP·Filed 1976·Granted Apr 11, 1978·27 cites·2 claims
- 2064US3987820AGas riser apparatus and methodPERFECTION CORP·Filed 1974·Granted Oct 26, 1976·19 cites·16 claims
- 2163US5947532AStab-type coupling for conduitPERFECTION CORP·Filed 1997·Granted Sep 7, 1999·29 cites·17 claims
- 2262US7178544B2Combination shut-off and resetable excess flow valvePERFECTION CORP·Filed 2004·Granted Feb 20, 2007·9 cites·18 claims
- 2359US4279435AGas riser apparatusPERFECTION CORP·Filed 1979·Granted Jul 21, 1981·22 cites·2 claims
- 2457US4418888AAngle cock valvePERFECTION CORP·Filed 1981·Granted Dec 6, 1983·19 cites·16 claims
- 2556US7125052B2Crimped gas riser with jacket assemblyPERFECTION CORP·Filed 2003·Granted Oct 24, 2006·9 cites·20 claims
- 2656US5934711AMold shot riser element with O-ring sealingPERFECTION CORP·Filed 1997·Granted Aug 10, 1999·23 cites·12 claims
- 2753US6371531B1Stab-type coupling with collet having locking ribs and rotation prevention memberPERFECTION CORP·Filed 1998·Granted Apr 16, 2002·22 cites·20 claims
- 2852US7093565B2Heat trapPERFECTION CORP·Filed 2004·Granted Aug 22, 2006·6 cites·20 claims
- 2952US6932389B2Connector with fluid line installation indicatorPERFECTION CORP·Filed 2003·Granted Aug 23, 2005·5 cites·17 claims
- 3052US4085950AGas riser apparatus and methodPERFECTION CORP·Filed 1976·Granted Apr 25, 1978·19 cites·2 claims
- 3151US4628965AStab-type couplingPERFECTION CORP·Filed 1984·Granted Dec 16, 1986·18 cites·2 claims
- 3246US6892753B2Structure for converting a mechanical joint to a fusion jointPERFECTION CORP·Filed 2002·Granted May 17, 2005·3 cites·41 claims
- 3344US4487432ANo-hole insertion jointPERFECTION CORP·Filed 1981·Granted Dec 11, 1984·12 cites·22 claims
- 3443US6851395B2Heat trap with non-rotating sealing memberPERFECTION CORP·Filed 2003·Granted Feb 8, 2005·4 cites·20 claims
- 3543US4750707AAngle valvePERFECTION CORP·Filed 1987·Granted Jun 14, 1988·11 cites·16 claims
- 3638US2004200988A1Ball valve with fused end capsPERFECTION CORP·Filed 2003·Application pending·0 cites
- 3737US2008099077A1Leakproof tapping tee assemblyPERFECTION CORP·Filed 2007·Application pending·0 cites
- 3831US6371525B1Gas riser with free rotating plastic riser casingPERFECTION CORP·Filed 1998·Granted Apr 16, 2002·7 cites·32 claims
- 3924US5397101ABall valvePERFECTION CORP·Filed 1994·Granted Mar 14, 1995·3 cites·20 claims
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