ROPER HOLDINGS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 458
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 4124
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 324
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS371
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 257
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS248
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164
 
  
 
F03B MACHINES OR ENGINES FOR LIQUIDS 123
 
  
 
G04B MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME-PIECES USING THE POSITION OF THE SUN, MOON, OR STARS 136
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7010393 Controlling multiple pumps operating in parallel or seriesJun 19, 03Mar 07, 06[G05D]
6217288 Method and apparatus for limiting a critical variable of a group of compressors or an individual compressorJan 20, 98Apr 17, 01[F04B]
5967742 Method and apparatus for preventing surge while taking a turbocompressor off-line from a parallel configurationDec 23, 97Oct 19, 99[F04B, F03B, F04D]
5951240 Method and apparatus for improving antisurge control of turbocompressors by reducing control valve response timeNov 21, 97Sep 14, 99[F01B]
5879133 Prevention of parameter excursions during process compressor surge in gas turbinesApr 21, 97Mar 09, 99[F04B]
RE35997 Self cleaning reciprocating and/or rotating deviceJan 17, 96Dec 22, 98[F01B, F16J]
5818035 Optically coupled large-format solid state imaging apparatus having edges of an imaging deviceSep 16, 96Oct 06, 98[H01L]
5752378 Prevention of parameter excursions in gas turbinesJul 16, 96May 19, 98[F02C]
5743715 Method and apparatus for load balancing among multiple compressorsOct 20, 95Apr 28, 98[F04B]
5699267 Hot gas expander power recovery and controlMar 03, 95Dec 16, 97[G05B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6767178 Response time of a steam turbine speed-control systemExpiredDec 31, 02Jul 27, 04[F01D]
2004/0081,549 METHOD AND APPARATUS FOR IMPROVING STEAM TURBINE CONTROLAbandonedOct 28, 02Apr 29, 04[F01D]
5908462 Method and apparatus for antisurge control of turbocompressors having surge limit lines with small slopesExpiredDec 06, 96Jun 01, 99[F04B, G06G]
5847264 Leak tester with flexible equation capabilitiesExpiredMar 31, 97Dec 08, 98[G01M]
5669363 Turbocharger intercooler control meansExpiredApr 02, 96Sep 23, 97[F02B]
5599161 Method and apparatus for antisurge control of multistage compressors with sidestreamsExpiredNov 03, 95Feb 04, 97[F01D]
5483091 Charge-coupled device array for spectroscopic detectionExpiredMar 14, 95Jan 09, 96[H01L]
5246354 Valveless metering pump with reciprocating, rotating pistonExpiredJan 31, 91Sep 21, 93[F04B]
5097126 High resolution electron energy loss spectrometerExpiredSep 25, 90Mar 17, 92[H01J]
5092037 Method of making a valveless positive displacement pump including a living hinge for angular adjustmentExpiredJan 18, 91Mar 03, 92[F04B]
5072748 Fluid pressure operated indicating relayExpiredApr 05, 91Dec 17, 91[G05D]
5065029 Cooled CCD camera for an electron microscopeExpiredAug 03, 90Nov 12, 91[H01J]
5044889 Phase adjustable metering pump, and method of adjusting the flow rate thereofExpiredMay 16, 90Sep 03, 91[F04B]
5020980 Valveless, positive displacement pump including hinge for angular adjustmentExpiredJan 05, 90Jun 04, 91[F04B]
5015157 Pump with multi-port dischargeExpiredJan 10, 90May 14, 91[F04B]
5009743 Chemically-assisted ion beam milling system for the preparation of transmission electron microscope specimensExpiredNov 06, 89Apr 23, 91[H01L, C03C, B44C]
4996433 Specimen heating holder for electron microscopesExpiredNov 06, 89Feb 26, 91[H01J]
4950901 Specimen cooling holder for side entry transmission electron microscopesExpiredNov 06, 89Aug 21, 90[H01V]
4949276 Method and apparatus for preventing surge in a dynamic compressorExpiredOct 26, 88Aug 14, 90[G04B, F04D]
4941809 Valveless positive displacement metering pumpExpiredFeb 13, 86Jul 17, 90[F04B]

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