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WELKER ENG

Overview
  • Total Patents
    56
About

WELKER ENG has a total of 56 patent applications. Its first patent ever was published in 1981. It filed its patents most often in United States and EPO (European Patent Office). Its main competitors in its focus markets measurement, mechanical elements and machines are ABX SA, SENTRY EQUIPMENT CORP and SWELAB INSTRUMENT AB.

Patent filings in countries

World map showing WELKER ENGs patent filings in countries
# Country Total Patents
#1 United States 55
#2 EPO (European Patent Office) 1

Patent filings per year

Chart showing WELKER ENGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Welker Brian H 31
#2 Welker Robert H 23
#3 Smith Ken 3
#4 Peebles Tracy Dean 1
#5 Welker Thomas F 1
#6 Fish David J 1
#7 Welker Brian 1

Latest patents

Publication Filing date Title
US2006219309A1 Pressure reduction system for quick-connects
US2006207344A1 Sensor probe and pipeline construction and method
US6764536B2 Sampling device with liquid eliminator
US6827486B2 Temperature probe and insertion device
US6818045B2 Liquid separator with integral sight glass
US2004079236A1 Instrument probe with valve and separator
US6439267B2 Adjustable flow diffuser
US6422737B1 Liquid sample cylinder with integral mixing pump
US6338359B1 Dual automatic insertion device
US6250330B1 Diaphragm regulator with removable diffuser
US6289934B1 Flow diffuser
US6092519A Heated sample container case and method
US6120035A Mating ring seal members with beveled mitered interface
US6036119A Elastomeric vaporizing injection nozzle
US5945611A Dual piston flow-through sampler
US6091489A Optical inspection apparatus for pressurized vessels
US6085777A Dual cylinder insertion apparatus
US5907107A Heated instrument regulator tip
US5996425A Vanishing head sample cylinder
US5769388A Flow diffuser and valve