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Kurita Water Industries Ltd patents

Recent patent applications related to Kurita Water Industries Ltd. Kurita Water Industries Ltd is listed as an Agent/Assignee. Note: Kurita Water Industries Ltd may have other listings under different names/spellings. We're not affiliated with Kurita Water Industries Ltd, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "K" | Kurita Water Industries Ltd-related inventors

Device for removing microparticles contained in water and ultrapure-water prouction and supply system

In a subsystem or water-feed path located upsteam of a use point in an ultrapure water production/supply process, fine particles having a particle diameter of 50 nm or less, in particular 10 nm or less are highly removed. A device for removing fine particles in water has a membrane filtration... Kurita Water Industries Ltd

Electrodeionization device and pure-water production system

An electrodeionization device having an improved boron rejection capability compared with high-performance electrodeionization devices proposed in the related art is provided. An electrodeionization device comprising a cathode; an anode; and a plurality of cation-exchange membranes and a plurality of anion-exchange membranes, the plurality of cation-exchange membranes and the plurality of... Kurita Water Industries Ltd

Method and measuring concentration of oxidant and system for cleaning electronic material

To measure the concentration of an oxidant in an oxidative cleaning liquid used in a process of cleaning an electronic material in a simple, easy, consistent, and accurate manner without being affected by impurities included in the cleaning liquid, such as metals. A method for measuring the concentration of an... Kurita Water Industries Ltd

Ultrapure water production apparatus and ultrapure water production method

The present invention provides an apparatus and method for producing ultrapure water of extremely high purity that sufficiently meets the requirement for its quality at low production cost with reduced footprint. The apparatus for producing ultrapure water includes a pretreatment system, a primary water purification system, and a subsystem, wherein... Kurita Water Industries Ltd

Water recovery apparatus and electrodialysis device

Wastewater containing scale components, organic substances, inorganic ions, and the like, such as human effluent, generated in a closed system space, such as a nuclear shelter, a hazardous shelter, a space station or a moon-Mars mission manned spacecraft, or a lunar base is efficiently treated by a simple structural apparatus,... Kurita Water Industries Ltd

Cleaning agent, cleaning liquid, and cleaning reverse osmosis membrane

Provided are a cleaning agent and a cleaning liquid that prevent a reduction in the rejection rate of an RO membrane which may occur when the RO membrane is cleaned and a method for cleaning an RO membrane with the cleaning liquid. The agent for cleaning an RO membrane includes... Kurita Water Industries Ltd

Ultrapure water producing method

A method for producing ultrapure water includes supplying raw water (industrial water, tap water, well water, or used ultrapure water discharged from semiconductor plants) to a pretreatment system for treating the raw water to produce water, supplying the water to a primary water purification system having a reverse osmosis membrane... Kurita Water Industries Ltd

Method and producing pure water

Provided are a method and an apparatus for producing pure water in which water that has been subjected to an ultraviolet oxidation treatment performed with an ultraviolet oxidation device is brought into contact with a platinum-group metal catalyst, the method and apparatus eliminating the likelihood of the catalyst being degraded... Kurita Water Industries Ltd

Reverse-osmosis-membrane device and operating the same

Provided are reverse-osmosis-membrane device capable of treating raw water including a large amount of membrane foulants, such as MBR-treated water, with stability while preventing a reduction in the amount of permeate, and a method for operating the reverse-osmosis-membrane device. The raw water includes a high-molecular organic substance having a molecular... Kurita Water Industries Ltd

Method for treating ballast water

This method entails: collecting in advance untreated ballast water to which a chlorine-based active substance has not been added; measuring in advance the turbidity of the untreated ballast water; and adding a chlorine-based active substance with an adding amount determined on the basis of the turbidity. The amount of the... Kurita Water Industries Ltd

Biological treatment method and biological treatment apparatus

Provided is a biological treatment method and an apparatus that allow organic wastewater from a manufacturing process of electronic devices to be neutralized efficiently during its biological treatment with a less neutralizer in contrast to excessive use thereof in the conventional biological treatment and thereby make it possible to reduce... Kurita Water Industries Ltd

Agent for treating water circulating through wet paint booth and treating water circulating through wet paint booth

Provided is an agent for treating water circulating through a wet paint booth, the agent being capable of reducing the adhesion of a solvent-based paint and coagulating a solvent-based paint to a sufficient degree regardless of the type of the paint, the type of the curing agent used, or the... Kurita Water Industries Ltd

Method and system for treating circulating water circulating through wet paint booth

An adequate control of a pH of circulating water circulating through a wet paint booth enables an efficient coagulation treatment of a paint included in the circulating water. A method for treating circulating water circulating through a wet paint booth and including a paint includes treating the paint included in... Kurita Water Industries Ltd

Facility management system

A facility management system quickly creates information required for maintenance or the like of a water treatment facility, after water is sampled at the water treatment facility. The facility management system includes a management center including an operation database in which information indicating an operating status of a water treatment... Kurita Water Industries Ltd

Method for treating water containing low-molecular-weight organic substance

Provided is a method for treating water containing a low-molecular-weight organic substance which enables the low-molecular-weight organic substance to be removed with certainty at a sufficient level without subjecting the water to a biological treatment. A method for treating water containing a low-molecular-weight organic substance, the method comprising passing raw... Kurita Water Industries Ltd

Use of zirconium-containing additive compositions

The invention relates to the use of an additive composition in the form of an aqueous solution or dispersion having a solids content in the region of 5 to 75% in wt. with respect to the total weight of the additive composition, obtained according to a method consisting of mixing... Kurita Water Industries Ltd

Dispersant for water treatment and water treatment method

An object of the present invention is to provide a dispersant for treatment of water. The dispersant is used in a membrane separation process of water containing an organic compound having a phenolic hydroxy group and prevents a reduction in amount of the water permeating a separation membrane, which is... Kurita Water Industries Ltd

Residual chlorine measuring apparatus and measuring residual chlorine

A residual chlorine measuring apparatus includes: a detection electrode that is immersed in a sample solution, the detection electrode being made of gold or platinum; a counter electrode that is immersed in the sample solution, the counter electrode being made of silver/silver chloride; a voltage applying device that applies an... Kurita Water Industries Ltd

System and calculating concentration of water treatment chemical

A system for calculating a concentration of a water treatment chemical includes a water analyzer, databases storing information regarding a chemical component of the water treatment chemical, a server sending the information stored in the database, and a communication device sending the information acquired from the server to the water... Kurita Water Industries Ltd

Method for producing paper, and pitch removal agent

(wherein, 70≦x≦88 and 2.80≦b≦3.03).... Kurita Water Industries Ltd

Antimicrobial and algicidal agent for cooling water system

An antimicrobial and algicidal agent for cooling water system contains an antimicrobial agent and an isothiazolone-based compound that effectively kill and remove the algae grown in the cooling water system.... Kurita Water Industries Ltd

Method for removing scale and scale remover in steam generating facility

Provided are a method for removing scale and a scale remover that can efficiently remove scale deposited inside a boiler can or the like in an addition amount of chemicals permissible in terms of cost without corroding a boiler, particularly can efficiently remove scale deposited inside a boiler can even... Kurita Water Industries Ltd

Concentration-factor measurement device, concentration-factor measurement method, and water-quality-index-value measurement method

Provided are a concentration-factor measurement device and method for accurately calculating a concentration factor of circulating water, and a method for measuring a water-quality index value of the circulating water. The concentration-factor measurement device includes a light-absorbance measurement unit (1) for measuring absorbance by irradiating each of cells (12A-12C) with... Kurita Water Industries Ltd

Lithium ion battery and electronic device using same

A nonaqueous electrolytic solution lithium ion battery comprises a positive electrode terminal, a negative electrode terminal and a battery case, and an electrode body is contained within the battery case. The electrode body comprises a positive electrode collector, an electrode plate for positive electrodes, a negative electrode collector and an... Kurita Water Industries Ltd

Device and controlling chemical injection into boiler

A device for controlling injection of chemical into a boiler and a chemical injection method can control an injection amount such that a chemical concentration is obtained as per a target even in a boiler feed-water facility where a flow rate of feed-water varies to a large extent in a... Kurita Water Industries Ltd

Method and treating ammonia-containing water

A method for treating ammonia-containing water containing ammonia, metal ions that form a complex with ammonia, and a reducing substance includes a first step of oxidizing the reducing substance by adding hydrogen peroxide to the ammonia-containing water; a second step of aerating the resultant water treated in the first step... Kurita Water Industries Ltd

Wet paint booth circulating water treatment agent

A method for treating a circulating water in a wet paint booth, the method including adding a treatment agent including an aqueous solution including a tannin and an alkali metal hydroxide and/or an alkali metal carbonate to the circulating water in any of passages for the circulating water in the... Kurita Water Industries Ltd

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This listing is an abstract for educational and research purposes is only meant as a recent sample of applications filed, not a comprehensive history. is not affiliated or associated with Kurita Water Industries Ltd in any way and there may be associated servicemarks. This data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Kurita Water Industries Ltd with additional patents listed. Browse our Agent directory for other possible listings. Page by