Assignee
CLACK CORP
US34 patents
Top patents by PatentIndex Score
US5389260AFeb 14, 1995
Brine seal for tubular filter
CLACK CORP204 citations98
US6402944B1Jun 11, 2002
Water softener control valve with removable seal stack
CLACK CORP91 citations97
US6051144AApr 18, 2000
Liquid filtration system and replaceable filter cartridge usable therewith
CLACK CORP171 citations96
US5876610AMar 2, 1999
Method and apparatus for monitoring liquid flow through an enclosed stream
CLACK CORP124 citations96
US5560393AOct 1, 1996
Self-contained, purified drinking water refrigerator storage apparatus
CLACK CORP68 citations96
US5454944AOct 3, 1995
Self-contained, purified drinking water refrigerator storage apparatus
CLACK CORP80 citations96
US5290442AMar 1, 1994
Self-contained, purified drinking water refrigerator storage apparatus
CLACK CORP77 citations96
US4997553AMar 5, 1991
Storage and dispensing apparatus for reverse osmosis filtration purification system
CLACK CORP70 citations96
US5128035AJul 7, 1992
Fluid flow control device for water treatment systems
CLACK CORP101 citations95
US5002664AMar 26, 1991
Fluid flow control device for R.O. filtration purification systems
CLACK CORP65 citations95
US6444127B1Sep 3, 2002
Water conditioning unit control valve
CLACK CORP66 citations94
US5320752AJun 14, 1994
Water purification system employing modular flat filter assembly
CLACK CORP79 citations94
US7017600B2Mar 28, 2006
Faucet
CLACK CORP25 citations92
US5672232ASep 30, 1997
Apparatus for producing tubular products from nonwoven fibers
CLACK CORP20 citations92
USRE35252EMay 28, 1996
Fluid flow control device for water treatment systems
CLACK CORP33 citations92
US5366576ANov 22, 1994
Method for producing tubular products from nonwoven fibers
CLACK CORP28 citations92
US4496906AJan 29, 1985
Liquid conductivity monitor
CLACK CORP44 citations92
US5460719AOct 24, 1995
Modular flat filter assembly and method of making same
CLACK CORP25 citations91
USD386242SNov 11, 1997
Countertop filter
CLACK CORP20 citations89
US7476354B2Jan 13, 2009
Method and apparatus for making a blow molded article with integral insert
CLACK CORP9 citations84
US4235340ANov 25, 1980
Salt grid for a brine tank
CLACK CORP27 citations78
US6776901B1Aug 17, 2004
Quiet flow control washer for water softener or the like
CLACK CORP18 citations77
US10472251B2Nov 12, 2019
Fluid treatment tank having a distributor plate
CLACK CORP2 citations72
US10106434B2Oct 23, 2018
Fluid treatment tank having a distributor plate
CLACK CORP4 citations72
US8961797B2Feb 24, 2015
Water treatment system tank selector valve assembly
CLACK CORP6 citations72
US9079783B2Jul 14, 2015
Distributor arrangement for a fluid treatment tank
CLACK CORP2 citations62
US9051196B2Jun 9, 2015
Baffle plate for a water treatment device
CLACK CORP2 citations62
USD296460SJun 28, 1988
Cartridge for filtration or absorption media
CLACK CORP5 citations61
US12415233B2Sep 16, 2025
Fluid treatment tank having a laser welded distributor plate
CLACK CORP0 citations59
US12090573B2Sep 17, 2024
Fluid treatment tank having a laser welded distributor plate
CLACK CORP0 citations59
US7690914B1Apr 6, 2010
Apparatus for making a blow molded article with integral insert
CLACK CORP1 citations52
US12297129B2May 13, 2025
Water treatment tank with conductivity monitor
CLACK CORP0 citations51
US11059727B2Jul 13, 2021
Fluid treatment tank having air blocker
CLACK CORP0 citations51
US7243669B2Jul 17, 2007
Float-responsive valve with premature closure prevention
CLACK CORP5 citations46