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FILTERTEK INC

Overview
  • Total Patents
    139
About

FILTERTEK INC has a total of 139 patent applications. Its first patent ever was published in 1977. It filed its patents most often in United States, EPO (European Patent Office) and Canada. Its main competitors in its focus markets machines, chemical engineering and medical technology are AGC ENGINEERING CO LTD, LIPPOLD HANS JOACHIM and WIL MAN POLYMER FILTRATION GMB.

Patent filings per year

Chart showing FILTERTEK INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Davis Ralph L 22
#2 Boast Andrew J 20
#3 Ruschke Rick R 16
#4 Ruschke Ricky R 15
#5 Leahey John A 13
#6 Kandel Edward 12
#7 Cain Thomas A 11
#8 Michalowski Ronald F 10
#9 Parnell Douglas R 10
#10 Franzene Brian J 9

Latest patents

Publication Filing date Title
WO2008008974A2 Valve apparatus, combination filter valve assemblies, and devices, systems, and methods including the same
US2007163664A1 Check valve
CN101522279A Needle-punched non-woven filtration media and in-tank fuel filters suitable for filtering alternative fuels
US7041217B1 Filter rings
DE102004053214A1 Non-return valve in particular for use in surgical device, comprising membrane permanently attached to one of two housings
US7282140B2 Sump filter with filter element cartridge
EP1514586A1 Filtration media created by sonic welding
US2004231720A1 Check valve and filter assembly incorporating such valve, especially for water cooler assemblies
EP1493478A1 Multiple bridge retainer
US2006163515A1 Fluid handling device and method of making same
US2004226444A1 Bacterial retentive, air venting, intravenous filter
CA2404247A1 Integrated fuel filter and calibration tube for a fuel injector
EP1271028A2 Check valve and filter assembly, especially for water cooler assemblies
EP1238693A1 Sump filter with filter element cartridge
CA2360294A1 Process for combined pleating of filter media and molding of filter assembly
CA2313069A1 Semisolid product dispensing head
CA2303659A1 Filter manufacturing process using a combined welding and cutting step
US6228069B1 Needleless access device
US6105789A Plastic component with O-ring retainer
US6221065B1 Self-priming needle-free “Y”-adapter