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Class Information
Number: 204/229.4
Name: Chemistry: electrical and wave energy > Apparatus > Electrolytic > With programmed, cyclic, or time responsive current, voltage, or power control means
Description: Apparatus having control means for (a) storing coded instructions or other data used to control current, voltage, or power during operation of the apparatus, (b) repetitively regulating current, voltage, or power during operation of the apparatus, or (c) controlling current, voltage, or power according to preset timing sequences or to last for predetermined durations (e.g., timer switches, etc.).










Sub-classes under this class:

Class Number Class Name Patents
204/229.5 For controlling waveform supplied to working electrode 90
204/229.6 For simultaneously reversing polarity of working and counter electrodes 59
204/229.7 Having specified circuit details 49


Patents under this class:
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Patent Number Title Of Patent Date Issued
8591717 Alternating electric current generating process Nov. 26, 2013
8585875 Substrate plating apparatus with multi-channel field programmable gate array Nov. 19, 2013
8557090 High-pressure electrolysis installation and process for inertising an installation of this type Oct. 15, 2013
8518223 Method and apparatus for forming by electrochemical material removal Aug. 27, 2013
8475644 Method and apparatus for electroplating Jul. 2, 2013
8475636 Method and apparatus for electroplating Jul. 2, 2013
8419907 Ion eluting unit, device provided therewith, and washing machine Apr. 16, 2013
8307484 Method and apparatus for operation of pool cleaner with integral chlorine generator Nov. 13, 2012
8152987 Method for ensuring and monitoring electrolyzer safety and performances Apr. 10, 2012
8097130 Integrated water treatment system Jan. 17, 2012
7959770 Electrocoating plant Jun. 14, 2011
7959771 Electrophoretic dip coating plant Jun. 14, 2011
7879216 System and method for isotope separation Feb. 1, 2011
7758739 Methods of producing structures for electron beam induced resonance using plating and/or etching Jul. 20, 2010
7682492 Electrocoagulation system Mar. 23, 2010
7527722 Electrochemical mechanical planarization May. 5, 2009
7452449 Apparatus for electrolysis of water Nov. 18, 2008
7413637 Self-contained, self-powered electrolytic devices for improved performance in automatic dishwashing Aug. 19, 2008
7410557 Hydrogen activating apparatus Aug. 12, 2008
7390384 Device for producing negatively charged nanoparticles and a method for the same Jun. 24, 2008
7267898 Freeze prevention of a fuel cell power plant Sep. 11, 2007
7254938 Power supply and transformer Aug. 14, 2007
7231266 Digital control device and program Jun. 12, 2007
7217346 Water treating method, water treating apparatus, and hydroponics system using the apparatus May. 15, 2007
7201831 Impurity detection device Apr. 10, 2007
7160421 Turning electrodes used in a reactor for electrochemically processing a microelectronic workpiece Jan. 9, 2007
6929740 Water purification system Aug. 16, 2005
6916413 Electro-plating apparatus and method Jul. 12, 2005
6869518 Electrochemical generation of chlorine dioxide Mar. 22, 2005
6843894 Cathode current control system for a wafer electroplating apparatus Jan. 18, 2005
6790548 Staged venting of fuel cell system during rapid shutdown Sep. 14, 2004
6706168 Wastewater treatment method and apparatus Mar. 16, 2004
6638413 Methods and apparatus for electrolysis of water Oct. 28, 2003
6632334 Distributed power supplies for microelectronic workpiece processing tools Oct. 14, 2003
6478949 Method and apparatus for increasing the oxygen content of water Nov. 12, 2002
6436270 Method and device for controlling the movement of a feeding and breaking chisel in an aluminum production cell Aug. 20, 2002
6428689 Water purifying and dispensing apparatus, and method of purifying chlorine-containing water Aug. 6, 2002
6391179 Plating apparatus and method of preventing substitute deposition May. 21, 2002
6387243 Separation of metal ions absorbed on a resin and installation for recycling photographic effluents including an exchanger and an electrolytic vessel May. 14, 2002
6368491 Method of controlling a modular ceramic oxygen generating system Apr. 9, 2002
6319390 Method of and system for cleansing a toilet or urinal Nov. 20, 2001
6315886 Electrolytic apparatus and methods for purification of aqueous solutions Nov. 13, 2001
6179986 Solid polymer electrolyte electrochemical oxygen control system with integral reactor feedback sensing Jan. 30, 2001
6174419 Electrolytic water producing apparatus Jan. 16, 2001
6171469 Method and apparatus for increasing the oxygen content of water Jan. 9, 2001
6168693 Apparatus for controlling the uniformity of an electroplated workpiece Jan. 2, 2001
6113779 Electrical water purification apparatus Sep. 5, 2000
6106691 Medical instrument sterilizing and washing method and apparatus Aug. 22, 2000
RE36402 Electrolytic cell assembly and process for production of bromine Nov. 23, 1999
5935392 Electrodes for electrolytic removal of nitrates from water, methods of making same, and apparatus incorporating said electrodes Aug. 10, 1999

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