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Class Information
Number: 210/900
Name: Liquid purification or separation > Ultra pure water (e.g., conductivity water)
Description: Collection of disclosures directed to the production of extremely pure water; the technique may involve "polishing" (an ion exchange process) or combinations of processes.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8641905 Method for high efficiency reverse osmosis operation Feb. 4, 2014
8518252 System for field intravenous fluid reconstruction Aug. 27, 2013
8480906 Pure water manufacturing method and pure water manufacturing apparatus Jul. 9, 2013
8382988 Process for the production of ultra pure water using a membrane Feb. 26, 2013
8246838 Fluid filtration method, fluid filtered thereby, lithographic apparatus and device manufacturing method Aug. 21, 2012
8119008 Fluid purification methods and devices Feb. 21, 2012
7914687 Fluid filtration method, fluid filtered thereby, lithographic apparatus and device manufacturing method Mar. 29, 2011
7737380 Electrical-discharge machining apparatus and method and apparatus for dielectric-fluid quality control Jun. 15, 2010
7632410 Universal water purification system Dec. 15, 2009
7578416 Water purification apparatus Aug. 25, 2009
7389639 Water recovery and purification Jun. 24, 2008
7378025 Fluid filtration method, fluid filtered thereby, lithographic apparatus and device manufacturing method May. 27, 2008
7320756 Method and apparatus for treatment of feedwaters by membrane separation under acidic conditions Jan. 22, 2008
7305275 Material supply system in semiconductor device manufacturing plant Dec. 4, 2007
7258801 System and method for reducing deionized water consumption Aug. 21, 2007
7122149 Apparatus and method for continuous depyrogenation and production of sterile water for injection Oct. 17, 2006
7049615 Portable ultraviolet water purifier May. 23, 2006
7018529 System for producing ultrapure water Mar. 28, 2006
6991733 Process for removing organics from ultrapure water Jan. 31, 2006
6977047 Method and system for the manufacture of pharmaceutical water Dec. 20, 2005
6951609 High-purity water producing apparatus Oct. 4, 2005
6949192 Apparatus for producing USP or WFI purified water Sep. 27, 2005
6929748 Apparatus and method for continuous electrodeionization Aug. 16, 2005
6884359 Apparatus and method for controlling resistivity of ultra pure water Apr. 26, 2005
6884356 Low-level boron detection and measurement Apr. 26, 2005
6884344 Hydrogen-dissolved water production apparatus Apr. 26, 2005
6827857 Control valve and water purification method Dec. 7, 2004
6808608 Water purifier and method Oct. 26, 2004
6776172 Method of cleaning ultrapure water supply system Aug. 17, 2004
6733661 Ultrapure water producing apparatus May. 11, 2004
6719745 Water purification pack Apr. 13, 2004
6716802 Polishing systems, methods of polishing substrates, and methods of preparing liquids for semiconductor fabrication processes Apr. 6, 2004
6679988 Apparatus for producing USP or WFI purified water Jan. 20, 2004
6663722 Method of cleaning fluorine-containing rubber molded article for semiconductor production apparatuses and cleaned molded article Dec. 16, 2003
6648307 Method to increase the quantity of dissolved gas in a liquid and to maintain the increased quantity of dissolved gas in the liquid until utilized Nov. 18, 2003
6649065 Bromine biocide removal Nov. 18, 2003
6585890 Process for producing sterile water for injection from potable water Jul. 1, 2003
6581375 Apparatus and method for the recovery and purification of water from the exhaust gases of internal combustion engines Jun. 24, 2003
6582385 Hemofiltration system including ultrafiltrate purification and re-infusion system Jun. 24, 2003
6579445 System for the production of laboratory grade ultrapure water Jun. 17, 2003
6562205 High-temperature ultrapure water production apparatus and liquid medicine preparation apparatus equipped with the production apparatus May. 13, 2003
6537456 Method and apparatus for high efficiency reverse osmosis operation Mar. 25, 2003
6494223 Wet cleaning apparatus utilizing ultra-pure water rinse liquid with hydrogen gas Dec. 17, 2002
6488271 Method to increase the quantity of dissolved gas in a liquid and to maintain the increased quantity of dissolved gas in the liquid until utilized Dec. 3, 2002
6485649 Method and device for the production of pure water Nov. 26, 2002
6464867 Apparatus for producing water containing dissolved ozone Oct. 15, 2002
6461519 Process for producing ultra-pure water, and configuration for carrying out a process of this nature Oct. 8, 2002
6447684 Filtration and purification system for pH neutral solutions Sep. 10, 2002
6420185 Water contamination concentration apparatus and process Jul. 16, 2002
6416676 Deionized water degasification for semiconductor fabrication Jul. 9, 2002

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