Assignee
IONICS
US123 patents
Top patents by PatentIndex Score
US5891328AApr 6, 1999
Membrane-frame for processes including electrodialysis
IONICS121 citations99
US6733636B1May 11, 2004
Water treatment method for heavy oil production
IONICS212 citations98
US5503729AApr 2, 1996
Electrodialysis including filled cell electrodialysis (electrodeionization)
IONICS118 citations98
US4731049AMar 15, 1988
Cell for electrically controlled transdermal drug delivery
IONICS327 citations98
US6582605B2Jun 24, 2003
Method of treating industrial waste waters
IONICS92 citations97
US5693227ADec 2, 1997
Catalyst mediated method of interfacial polymerization on a microporous support, and polymers, fibers, films and membranes made by such method
IONICS161 citations97
US5147553ASep 15, 1992
Selectively permeable barriers
IONICS144 citations97
US5066375ANov 19, 1991
Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack
IONICS175 citations97
US6117297ASep 12, 2000
Electrodialysis apparatus
IONICS79 citations96
US5679229AOct 21, 1997
Electrodialysis including filled cell electrodialysis (electrodeionization)
IONICS68 citations96
US5679228AOct 21, 1997
Electrodialysis including filled cell electrodialysis (electrodeionization)
IONICS65 citations96
US5616249AApr 1, 1997
Nanofiltration apparatus and processes
IONICS59 citations96
US5510394AApr 23, 1996
High ionic conductance ion exchange membranes and their preparation
IONICS57 citations96
US5152901AOct 6, 1992
Polyamine-polyamide composite nanofiltration membrane for water softening
IONICS80 citations96
US5037858AAug 6, 1991
Anion selective polymers prepared from concentrated solutions of N,N'-methylenebisacrylamide
IONICS58 citations96
US4707240ANov 17, 1987
Method and apparatus for improving the life of an electrode
IONICS58 citations96
US4608140AAug 26, 1986
Electrodialysis apparatus and process
IONICS86 citations96
US4594135AJun 10, 1986
Process and apparatus for electrically desorbing components selectively sorbed on granules
IONICS93 citations96
US4298442ANov 3, 1981
Electrodialysis process for silica removal
IONICS84 citations96
US4242185ADec 30, 1980
Process and apparatus for controlling impurities and pollution from membrane chlor-alkali cells
IONICS84 citations96
US4217186AAug 12, 1980
Process for chloro-alkali electrolysis cell
IONICS70 citations96
US4216073AAug 5, 1980
Ion exchange resin containing activated carbon
IONICS77 citations96
US4191811AMar 4, 1980
Ion exchange membranes based upon polyphenylene sulfide and fluorocarbon polymeric binder
IONICS97 citations96
US6613230B2Sep 2, 2003
Method for simultaneous removal of arsenic and fluoride from aqueous solutions
IONICS85 citations95
US6221248B1Apr 24, 2001
Styrene sulfonate cation exchange membrane
IONICS42 citations95
US6126805AOct 3, 2000
Electrodialysis including filled cell electrodialysis (electrodeionization)
IONICS57 citations95
US5814197ASep 29, 1998
Electrodialysis including filled cell electrodialysis (electrodeionization)
IONICS66 citations95
US5264125ANov 23, 1993
Process for manufacturing continuous supported ion selective membranes using non-polymerizable high boiling point solvents
IONICS73 citations95
US5118717AJun 2, 1992
High ion exchange capacity polyelectrolytes having high crosslink densities and caustic stability
IONICS72 citations95
US5026465AJun 25, 1991
Electrodeionization polarity reversal apparatus and process
IONICS152 citations95
US4969983ANov 13, 1990
Apparatus and process for the removal of acidic and basic gases from fluid mixtures using bipolar membranes
IONICS104 citations95
US4871431AOct 3, 1989
Apparatus for the removal of dissolved solids from liquids using bipolar membranes
IONICS96 citations95
US4584075AApr 22, 1986
Process and apparatus for electrically desorbing components selectively sorbed on an electrolytically conducting barrier
IONICS96 citations95
US4505797AMar 19, 1985
Ion-exchange membranes reinforced with non-woven carbon fibers
IONICS115 citations95
US4322275AMar 30, 1982
Fractionation of protein mixtures
IONICS80 citations95
US4321192AMar 23, 1982
Fractionation of protein mixtures by salt addition followed by dialysis treatment
IONICS56 citations95
US5203976AApr 20, 1993
Introducing and removing ion-exchange and other particulates rom an assembled electrodeionization stack
IONICS107 citations94
US5120416AJun 9, 1992
Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack
IONICS111 citations94
US4673483AJun 16, 1987
Isoelectric focusing apparatus
IONICS57 citations93
US6723246B2Apr 20, 2004
Filter cleaning method
IONICS19 citations92
US6652758B2Nov 25, 2003
Simultaneous ammonia and fluoride treatment for wastewater
IONICS42 citations92
US6344584B2Feb 5, 2002
Process for producing styrene sulfonate cation
IONICS27 citations92
US5354903AOct 11, 1994
Polymers prepared from concentrated solutions of N',N'methylenebisacrylamide
IONICS28 citations92
US5203982AApr 20, 1993
Cation exchange membranes
IONICS29 citations92
US5145618ASep 8, 1992
Process for manufacturing continuous supported ion selective membranes using non-polymerizable high boiling point solvents
IONICS47 citations92
US5141717AAug 25, 1992
Carbon monitor containing anion exchange resin
IONICS45 citations92
US5137925AAug 11, 1992
Aliphatic anion exchange polymeric membranes having improved resistance to fouling
IONICS22 citations92
US5045171ASep 3, 1991
Acid efficient membrane for use in electrodialysis for recovery of acid
IONICS29 citations92
US4977094ADec 11, 1990
Process for monitoring the quality of water
IONICS30 citations92
US4735717AApr 5, 1988
Spiral wound pressure membrane module
IONICS37 citations92
Showing the top 50 of 123 patents by PatentIndex Score.