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JWI INC

Overview
  • Total Patents
    17
About

JWI INC has a total of 17 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and Australia. Its main competitors in its focus markets chemical engineering, surface technology and coating and environmental technology are KRAUSS MAFFEI IMP GMBH, MOELLER & JOCHUMSEN AS and JIANGSU YONGYI ENVIRONMENTAL PROTECTION TECH CO LTD.

Patent filings in countries

World map showing JWI INCs patent filings in countries
# Country Total Patents
#1 United States 13
#2 WIPO (World Intellectual Property Organization) 3
#3 Australia 1

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Spyker David J 8
#2 Koops Wesley G 7
#3 De Haan Daniel 5
#4 Mcleod David P 5
#5 Roelofs James E 3
#6 Dehaan Daniel 3
#7 De Haan Joel D 3
#8 Gelfand Leonid B 3
#9 De Haan Gregory 3
#10 Mc Leod David P 2

Latest patents

Publication Filing date Title
US5674384A Filter press with weight-responsive bumping of filter plates
US5723046A Drip tray lock mechanism for filter press
US5635061A Plate shifter mechanism
US5401374A Electrolyzer for plating waste water
US5328617A Air-assist discharge of filter press cake
US5370795A Plate shifter for filter press
US5275740A Filter press with adaptive automated control arrangement
US5456022A Batch-type sludge drier
AU1249292A Batch-type sludge drier
US5172492A Batch-type dryer
US4963255A Plate shifter for filter press
US4884245A Quick-connection drive coupling for mixing tank