Class 204/519 - With control responsive to sensed condition

Subclass of Class 204 - Chemistry: electrical and wave energy
Definition: Process in which the barrier separation is regulated by
No. of patents: 27
Last issue date: 02/09/2010

Number	Title	Issue Date
7658828	Regeneration of adsorption media within electrical purification apparatuses The present disclosure generally relates to methods, systems, and devices for electrically purifying liquids containing species such as minerals, salts, ions, organics, and the like. One aspect of the invention provides methods of regenerating media within an electr...	02/09/2010
7407585	Water purification system and methods, and module for the system The invention relates to a method and a system for purifying water whereby: the water to be purified is pressurized (13); a pressurized flow of said water is directed onto at least one selective permeability...	08/05/2008
7354509	Wastewater treatment system A wastewater treatment system comprising means of decontaminating wastewater; means of measuring control parameters of the wastewater; means for controlling said decontamination means; and a programmable logic controller. The user is able to receive control paramete...	04/08/2008
7338600	Fractional deionization process A liquid treatment process is described for sequential removal of ionic species of progressively decreasing ionic strength without precipitation or “scaling.” An aspect of the invention includes two or more electrodeionization operations within one or more elect...	03/04/2008
7214300	Integrated electrokinetic devices and methods of manufacture Devices with electrokinetic elements are disclosed as well as their method of microfabrication for use in micro-scale analysis, mixture separation and reaction. The devices consist of solid hydrophilic-matrix films that have been microfabricated into a variety of mi...	05/08/2007
7084646	Method of detecting a gas bubble in a liquid A method of detecting a gas bubble in a measuring chamber filled with a liquid. The electrical conductivity of the liquid or a variable derived therefrom is measured in the measuring chamber at a first pressure value p1, and a first measured value S1...	08/01/2006
6896814	Fractional deionization process A liquid treatment process is described for sequential removal of ionic species of progressively decreasing ionic strength without precipitation or “scaling.” An aspect of the invention includes dual electrodeionization operations. The first electrodeionization ...	05/24/2005
6890417	Apparatus and method for refining alkaline solution An electrolytic bath is divided into an anodic chamber and a cathodic chamber by a cation-exchange membrane. A base alkaline solution of high impurity concentration is supplied into the anodic chamber from a tank of a base material as well as a circulating anolyte o...	05/10/2005
6726822	Electrodeionization process An improved electrodeionization system for removing ions from liquids passed therethrough, comprising a flow-through electrodeionization module, and a power supply electrically connected to the electrodeionization module electrodes so as to establish a voltage gradi...	04/27/2004
6727451	Method and device for manipulating microparticles in fluid flows To manipulate microparticles in a fluid that intersects a first channel or several first channels as a stream, one or more microparticles (14) are exposed to electrical field barriers that change their direction from the direction of flow toward the edge of t...	04/27/2004
6391177	High temperature continuous electrodialysis of electroless plating solutions An electrodialytic cell and process for its use in regenerating electroless plating solutions, particularly nickel-hypophosphite electroless plating solutions, are disclosed. The process is capable of operating at high temperatures and in a continuous fas...	05/21/2002
6274019	Electrodeionization apparatus Water to be treated (feed water) flows through a series of desalination chambers filled with ion exchange resins on which impurity ions in the feed water are removed. Each desalination chamber consists of a cation-permeable membrane on one side with an an...	08/14/2001
6255551	Method and system for treating contaminated media A process treats contaminated media and comprises detecting a non-uniform contaminated media property selected from electrical conductivity or electroosmotic permeability; and selectively applying an electric field to the contaminated media to effect the ...	07/03/2001
6129828	Apparatus and methods for active biological sample preparation Systems and methods for the electronic sample preparation of biological materials utilize the differential charge-to-mass ratio and/or the differential affinity of sample constituents to separation materials for sample preparation. An integrated system is...	10/10/2000
5766439	Production and recovery of organic acids A process is described for producing organic acids such as lactic acid. The process includes the steps of producing lactic acid by fermentation, resulting in an aqueous fermentation broth containing lactic acid, and adding a calcium base, such as calcium ...	06/16/1998
5725748	Process and installation for treating cellulose waste lye In a process for an electrochemical treatment of cellulose waste lye, mass transport takes place through a diaphragm or membrane between a cathode chamber and an anode chamber, and optionally through a middle chamber. Cationogenic components are removed f...	03/10/1998
5681728	Method and apparatus for the recovery and purification of organic acids The present invention relates to methods and apparatus for reducing the fouling of ion-selective membranes used in the electrodialytic purification of organic acids. More particularly, the present invention relates to the use of nanofiltration and chelati...	10/28/1997
5650055	Electrophoresis separation method and apparatus using barrier separation and polarity reversing The method and apparatus for preparative electrophoresis is especially useful for proteins. An electrophoretic potential with an initial polarity is applied across an electrophoretic medium (13) to induce at least two species of macromolecules (1,2) in a ...	07/22/1997
5047128	Electrodialysis cell for removal of excess electrolytes formed during electrodeposition of photoresists coatings This invention provides a means of controlling the composition of electrodepositable photoresists emulsion. The system removes contaminants from the bath which may adversely effect the quality of the deposited coatings and allows for continuous monitoring...	09/10/1991
4808287	Water purification process Potable water from a municipal water supply is treated to remove suspended solids, organic and inorganic dissolved solids, dissolved carbon dioxide gas and metal contaminants so as to produce ultra-pure water in the 16 megohm-cm3 and greater ra...	02/28/1989
4713156	Process for regulating an electro-dialyzer and improved electrodialysis apparatus A process and apparatus for regulating an electrodialyzer having a stack of ion-exchange membranes (2, 3) immersed in an electric field, and including sampling the dilute solution at the discharge (6), measuring in a cell (12) the content of a predetermin...	12/15/1987
4671861	Measurement and control of net caustic production during electrodialysis A method of and apparatus having utility in an electrodialysis and electrosynthesis process energized by direct eletrical current for the purification and replenishment of an electroless copper plating solution comprises indirectly measuring the hydroxide...	06/09/1987
4556465	Method of concentrating silica in an aqueous alkali metal silicate solution The ratio of silicate to alkali in silicate liquors is increased, for example to convert alkaline grades to neutral grades, by passing the liquors through an electrodialysis stack comprising alternating anion exchange membranes and cation exchange membran...	12/03/1985
4556466	Method of concentrating silica in an aqueous alkali metal silicate solution The ratio of silica to alkali in silicate liquors is increased, for example to convert alkaline grades to neutral grades, by passing the liquor through an electrodialysis stack comprising spaced ion-exchange membranes mounted between an anode and a cathod...	12/03/1985
4381232	Multi-stage electrodialysis stack electrode reversal system and method of operation An improved electrodialysis stack electrode reversal system and method of operation is disclosed in which each of the electrode pairs forming an electrical stage in such stack are reversed on a sequential stage by stage basis. The sequential reversal is t...	04/26/1983
4207157	Method for controlling halogen ion concentration in a photographic processing solution The concentration of halogen ions in a photographic developer is controlled at an almost constant value by determining the concentration of halogen ions in the developer by detecting the change in electric potential caused by the addition of silver ions t...	06/10/1980
4160713	Process for electro-dialysis In a process for electro-dialysis which comprises passing an electrolyte through dilution chambers and concentration chambers formed between a large number of alternately counterposed anion exchange membranes and cation exchange membranes, and applying an...	07/10/1979

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Class 204/519 - With control responsive to sensed condition