Assignee
FISHER CONTROLS INT
US·355 granted patents·20 pending applications·12,171 citations·filing 1980–2015
Top patents by PatentIndex Score
375 records- 0199US8033300B2Fluid pressure reduction devicesFISHER CONTROLS INT·Filed 2010·Granted Oct 11, 2011·47 cites·16 claims
- 0299US5197328ADiagnostic apparatus and method for fluid control valvesFISHER CONTROLS INT·Filed 1992·Granted Mar 30, 1993·352 cites·6 claims
- 0398US7963502B2Low friction live-loaded packingFISHER CONTROLS INT·Filed 2007·Granted Jun 21, 2011·88 cites·14 claims
- 0498US6026352ALocal device and process diagnostics in a process control network having distributed control functionsFISHER CONTROLS INT·Filed 1998·Granted Feb 15, 2000·378 cites·17 claims
- 0598US5970430ALocal device and process diagnostics in a process control network having distributed control functionsFISHER CONTROLS INT·Filed 1997·Granted Oct 19, 1999·369 cites·40 claims
- 0697US7802592B2Fluid pressure reduction devicesFISHER CONTROLS INT·Filed 2006·Granted Sep 28, 2010·53 cites·8 claims
- 0797US6244297B1Fluid pressure reduction deviceFISHER CONTROLS INT·Filed 1999·Granted Jun 12, 2001·103 cites·39 claims
- 0897US6186167B1Emergency shutdown test systemFISHER CONTROLS INT·Filed 1999·Granted Feb 13, 2001·106 cites·11 claims
- 0997US6056008AIntelligent pressure regulatorFISHER CONTROLS INT·Filed 1997·Granted May 2, 2000·190 cites·19 claims
- 1097US6014612ARemote diagnostics in a process control network having distributed control functionsFISHER CONTROLS INT·Filed 1997·Granted Jan 11, 2000·417 cites·28 claims
- 1197US5109692ADiagnostic apparatus and method for fluid control valvesFISHER CONTROLS INT·Filed 1990·Granted May 5, 1992·115 cites·6 claims
- 1297US4976144ADiagnostic apparatus and method for fluid control valvesFISHER CONTROLS INT·Filed 1990·Granted Dec 11, 1990·138 cites·5 claims
- 1397US4886241AValve stem packing containment for high pressure, high temperatureFISHER CONTROLS INT·Filed 1987·Granted Dec 12, 1989·118 cites·6 claims
- 1496US7556238B2Emergency shutdown systemFISHER CONTROLS INT·Filed 2005·Granted Jul 7, 2009·58 cites·26 claims
- 1596US6701957B2Fluid pressure reduction deviceFISHER CONTROLS INT·Filed 2001·Granted Mar 9, 2004·61 cites·19 claims
- 1696US6678584B2Method and apparatus for performing diagnostics in a control loop of a control valveFISHER CONTROLS INT·Filed 2002·Granted Jan 13, 2004·54 cites·41 claims
- 1796US6539315B1Regulator flow measurement apparatusFISHER CONTROLS INT·Filed 2000·Granted Mar 25, 2003·111 cites·38 claims
- 1896US6285966B1Function block apparatus for viewing data in a process control systemFISHER CONTROLS INT·Filed 1998·Granted Sep 4, 2001·294 cites·44 claims
- 1996US6178997B1Intelligent pressure regulatorFISHER CONTROLS INT·Filed 2000·Granted Jan 30, 2001·117 cites·20 claims
- 2096US6095196ATortuous path fluid pressure reduction deviceFISHER CONTROLS INT·Filed 1999·Granted Aug 1, 2000·106 cites·16 claims
- 2196US6047222AProcess control network with redundant field devices and busesFISHER CONTROLS INT·Filed 1997·Granted Apr 4, 2000·306 cites·27 claims
- 2295US8036837B2Diagnostic method for detecting control valve component failureFISHER CONTROLS INT·Filed 2008·Granted Oct 11, 2011·31 cites·12 claims
- 2395US7621293B2Versatile emergency shutdown device controller implementing a pneumatic test for a system instrument deviceFISHER CONTROLS INT·Filed 2006·Granted Nov 24, 2009·25 cites·19 claims
- 2495US6637452B1Valve with self-cleaning trimFISHER CONTROLS INT·Filed 2002·Granted Oct 28, 2003·79 cites·22 claims
- 2595US6382226B1Method for detecting broken valve stemFISHER CONTROLS INT·Filed 2001·Granted May 7, 2002·81 cites·3 claims
- 2695US6192281B1Network accessible interface for a process control networkFISHER CONTROLS INT·Filed 1997·Granted Feb 20, 2001·259 cites·20 claims
- 2795US5451923ACommunication system and methodFISHER CONTROLS INT·Filed 1994·Granted Sep 19, 1995·162 cites·42 claims
- 2895US5434774AInterface apparatus for two-wire communication in process control loopsFISHER CONTROLS INT·Filed 1994·Granted Jul 18, 1995·190 cites·19 claims
- 2995US5131666AZero clearance anti-extrusion rings for containment of ptfe packingFISHER CONTROLS INT·Filed 1990·Granted Jul 21, 1992·103 cites·13 claims
- 3094US8768631B2Diagnostic method for detecting control valve component failureFISHER CONTROLS INT·Filed 2013·Granted Jul 1, 2014·14 cites·7 claims
- 3194US7484710B2Fluid flow control valve with high temperature bi-directional shutoffFISHER CONTROLS INT·Filed 2005·Granted Feb 3, 2009·41 cites·19 claims
- 3294US7448409B2Fluid flow control device having a throttling element sealFISHER CONTROLS INT·Filed 2005·Granted Nov 11, 2008·36 cites·11 claims
- 3394US6725167B2Flow measurement module and methodFISHER CONTROLS INT·Filed 2002·Granted Apr 20, 2004·74 cites·43 claims
- 3494US5950668AControl valve positioners having improved operating characteristicsFISHER CONTROLS INT·Filed 1997·Granted Sep 14, 1999·98 cites·17 claims
- 3594US5769122AFluid pressure reduction deviceFISHER CONTROLS INT·Filed 1997·Granted Jun 23, 1998·93 cites·23 claims
- 3694US5230498ALive load packing systemFISHER CONTROLS INT·Filed 1992·Granted Jul 27, 1993·93 cites·3 claims
- 3793US9383020B2High temperature seals for use in rotary valvesFISHER CONTROLS INT·Filed 2013·Granted Jul 5, 2016·11 cites·24 claims
- 3893US9002973B2Delayed publishing in process control systemsFISHER CONTROLS INT·Filed 2012·Granted Apr 7, 2015·32 cites·30 claims
- 3993US7458310B2Asymmetric volume booster arrangement for valve actuatorFISHER CONTROLS INT·Filed 2005·Granted Dec 2, 2008·20 cites·13 claims
- 4093US6377859B1Maintenance interface device for a use in a process control networkFISHER CONTROLS INT·Filed 1997·Granted Apr 23, 2002·179 cites·23 claims
- 4193US6035878ADiagnostic device and method for pressure regulatorFISHER CONTROLS INT·Filed 1997·Granted Mar 14, 2000·111 cites·20 claims
- 4293US6026859AFluid pressure reduction device with linear flow characteristicFISHER CONTROLS INT·Filed 1999·Granted Feb 22, 2000·52 cites·5 claims
- 4393US5941281AFluid pressure reduction deviceFISHER CONTROLS INT·Filed 1998·Granted Aug 24, 1999·65 cites·17 claims
- 4493US5687098ADevice data acquisitionFISHER CONTROLS INT·Filed 1995·Granted Nov 11, 1997·96 cites·18 claims
- 4593US5180139ARotary ball fluid control valve with noise attenuatorFISHER CONTROLS INT·Filed 1991·Granted Jan 19, 1993·77 cites·5 claims
- 4693US4519579ACam valve self-centering seatFISHER CONTROLS INT·Filed 1983·Granted May 28, 1985·93 cites·19 claims
- 4792US9140369B2Floating ball valve sealFISHER CONTROLS INT·Filed 2013·Granted Sep 22, 2015·8 cites·13 claims
- 4892US7049975B2Reporting regulator for managing a gas transportation systemFISHER CONTROLS INT·Filed 2002·Granted May 23, 2006·75 cites·36 claims
- 4992US6954683B2Method and apparatus for performing diagnostics in a control loop of a control valveFISHER CONTROLS INT·Filed 2003·Granted Oct 11, 2005·35 cites·29 claims
- 5092US6935370B2Fluid pressure reduction deviceFISHER CONTROLS INT·Filed 2004·Granted Aug 30, 2005·38 cites·6 claims
Showing the top 50 of 375 patent records by PatentIndex Score.
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