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VALCO INSTR CO INC

Overview
  • Total Patents
    42
About

VALCO INSTR CO INC has a total of 42 patent applications. Its first patent ever was published in 1987. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets measurement, control and electrical machinery and energy are DAHMS HARALD, LRE MEDICAL GMBH and ANALAQ LTD.

Patent filings per year

Chart showing VALCO INSTR CO INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Stearns Stanley D 28
#2 Wentworth Wayne E 15
#3 Cai Huamin 14
#4 Cowles Chris S 6
#5 Loy Jr H Max 4
#6 Stearns Stanley 3
#7 Wentworth Wayne 2
#8 Huamin Cai 2
#9 Plistil Ales 1
#10 Stanley Stearns 1

Latest patents

Publication Filing date Title
CN101485229A Adaptive temperature controller
US2006169628A1 Compression fitting nut with interlocked ferrule
US2005197538A1 Reagent and sample introduction plunger device for a syringe
US7091044B2 Partial modulation via pulsed flow modulator for comprehensive two-dimensional liquid or gas chromatography
CN101027550A Gas detector with modular detection and discharge source calibration
US6575501B1 Tube sealing bushing
US6247731B1 Nut with controlled internal radius
US6193213B1 Variable pressure loading system utilizing combined spring and fluid pressure
US6030436A Permeation tube for delivering fluid at a constant flow rate independent of ambient temperature variations
CA2213975A1 Improved system for detecting compounds in a gaseous sample using induced photoionization for electron capture detection
CA2213974A1 Chlorine specific gas chromatographic detector
US6202698B1 Multiple port diaphragm valve
US6133740A Chlorine specific gas chromatographic detector
AU1557295A Improved pulsed discharge systems
US5594346A Apparatus and methods for identifying and quantifying compounds using a plurality of pulsed rare gas photoionization detectors
US5394092A System for identifying and quantifying selected constituents of gas samples using selective photoionization
CA2081572A1 High voltage spark excitation and ionization detector system
US4779465A Method and apparatus for training horn players