Pulsafeeder, 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 557
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 128
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 146
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8708678 Gear pumpMay 27, 10Apr 29, 14[F04C, F01C]
8322994 Effervescent gas bleeder apparatusNov 16, 09Dec 04, 12[F04B]
7896021 Quick change check valve systemMar 27, 08Mar 01, 11[F16K]
7806673 Gear pumpAug 01, 05Oct 05, 10[F01C]
7175397 Effervescent gas bleeder apparatusApr 10, 03Feb 13, 07[F04B]
5860793 Diaphragm metering pump with push to prime air bleeder valveApr 30, 96Jan 19, 99[F04B]
5667368 Diaphragm metering pump including improved leak detection diaphragmApr 30, 96Sep 16, 97[F04B]
5647733 Diaphragm metering pump having modular constructionDec 01, 95Jul 15, 97[F04B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0190,766 POLYMER STATIC MIXERAbandonedMar 27, 14Jul 09, 15[B01F]
2015/0047,721 Uniform Gap Check ValveAbandonedAug 18, 14Feb 19, 15[F16K]
2011/0027,108 Polymer-Metallic Reagent HeadAbandonedMay 10, 10Feb 03, 11[F04B]
7740399 Dry chemical feeder for a chemical mixing systemExpiredJul 05, 07Jun 22, 10[B01F]
2008/0250,921 Stroke adjustment mechanism for reciprocating pumpsAbandonedApr 04, 08Oct 16, 08[F04B]
2007/0031,271 Effervescent gas bleeder apparatusAbandonedOct 16, 06Feb 08, 07[F04B]
2006/0129,088 Metering pump control systemAbandonedOct 25, 05Jun 15, 06[A61M]
2006/0015,994 Automatic dispenserAbandonedJul 26, 05Jan 26, 06[E03D]
2006/0000,849 Metering system having a portable controllerAbandonedApr 20, 05Jan 05, 06[B67B, G01F]
6930486 Conductivity sensorExpiredAug 07, 03Aug 16, 05[G01N]
6222371 Hand-held fluid tester for process fluidsExpiredOct 22, 97Apr 24, 01[G01N]
6139286 Automatic venting back pressure valveExpiredSep 28, 98Oct 31, 00[F04B]
5676531 Autoclavable pump head assemblyExpiredMar 21, 96Oct 14, 97[F04B]
5398711 Modular fluid characteristic sensor and additive controllerExpiredJun 16, 94Mar 21, 95[G05D]
5249932 Apparatus for controlling diaphragm extension in a diaphragm metering pumpExpiredOct 07, 91Oct 05, 93[F04B]
5056036 Computer controlled metering pumpExpiredOct 20, 89Oct 08, 91[G06F]
4781535 Apparatus and method for sensing diaphragm failures in reciprocating pumpsExpiredNov 13, 87Nov 01, 88[G08B, F04B]
4599047 Chemical feed pump flow indicatorExpiredNov 02, 84Jul 08, 86[F04B, G01F]
4236881 Liquid metering pumpExpiredMay 03, 78Dec 02, 80[F04B]

Top Inventors for This Owner

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