Oval Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 3429
 
  
 
1004 OTHER MEASURING INSTRUMENTS, APPARATUS AND DEVICES432
 
  
 
A61F FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, E.G. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS 1139
 
  
 
F01C ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES 128
 
  
 
F03C POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS 123
 
  
 
G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR 159
 
  
 
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT 156
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 1150
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9506793 Coriolis flowmeter having a cross-sectional area of channels of the manifolds enabling a reduction in pressure lossMar 13, 13Nov 29, 16[G01F]
9506801 Piston proverApr 18, 14Nov 29, 16[G01P, G01F]
9180004 Delivery and retrieval systems for collapsible/expandable prosthetic heart valvesJan 08, 09Nov 10, 15[A61F]
8970124 Field equipment photoelectric sensing sensitivity adjustmentOct 04, 10Mar 03, 15[H03K, H05B]
8915115 Piston proverMar 23, 11Dec 23, 14[G01F]
8862434 Maintenance expert system for measuring instrumentOct 04, 10Oct 14, 14[G01K, G01D, G01F]
8725432 Signal processing method, signal processing apparatus, and Coriolis flowmeterDec 01, 10May 13, 14[G01F]
8725433 Signal processing method, signal processing apparatus, and Coriolis flowmeterDec 01, 10May 13, 14[G01F]
8700343 Signal processing method, signal processing apparatus, and Coriolis flowmeterJun 10, 09Apr 15, 14[G01F]
8676517 Signal processing method, signal processing apparatus, and coriolis flowmeterJun 10, 09Mar 18, 14[G01F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0255,367 POSITIVE DISPLACEMENT GAS-LIQUID TWO-PHASE FLOWMETER AND MULTI PHASE FLOW RATE MEASUREMENT SYSTEMAbandonedJun 16, 10Oct 11, 12[G01F]
8184017 Processing method in operation system, flow rate converter, and coriolis flow meterExpiredJun 21, 07May 22, 12[G08C]
8069734 Multi-vortex flowmeter integrating pressure gaugeExpiredApr 23, 07Dec 06, 11[G01F]
2011/0193,003 TORQUE LIMITER AND VALVE ACTUATORAbandonedApr 20, 09Aug 11, 11[F16K]
7895904 Multi-vortex flowmeter employing volume flow rate as switching pointExpiredApr 23, 07Mar 01, 11[G01F]
7870785 Positive displacement flowmeterExpiredMar 06, 08Jan 18, 11[G01F]
7861602 Explosion-proof high temperature compatible, multi-vortex flow meterExpiredMar 26, 07Jan 04, 11[G01F]
7506551 Coriolis flowmeter having a drive device driven in reverse phase to pair of second drive devicesExpiredSep 24, 04Mar 24, 09[G01F]
7437950 Coriolis flow rate meter with flow tube of double loop structureExpiredDec 05, 05Oct 21, 08[G01F]
7409873 Coriolis flowmeterExpiredSep 24, 04Aug 12, 08[G01F]
2007/0119,227 Reference volume tubeAbandonedJul 22, 04May 31, 07[G01F]
6807868 Coriolis mass flow meterExpiredOct 03, 00Oct 26, 04[G01F]
6802224 Arch-shaped tube type coriolis meter and method for determining shape of the coriolis meterExpiredApr 25, 03Oct 12, 04[G01F]
6588284 Coriolis mass flowmeter and method of making sameExpiredMay 25, 00Jul 08, 03[G01F]
5167450 CalorimeterExpiredJun 10, 91Dec 01, 92[G01N]
4977781 Vortex flow meterExpiredAug 24, 89Dec 18, 90[G01F]
4891989 Vortex flow meterExpiredDec 13, 88Jan 09, 90[G01F]
4838092 Vortex flow meterExpiredMar 10, 87Jun 13, 89[G01F]
4683760 Vortex flow meterExpiredAug 06, 84Aug 04, 87[G01F]
4625564 Vortex flow meterExpiredNov 30, 84Dec 02, 86[G01F]

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