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| Number | Title | Issue Date |
| 7682592 | Chemical process and production unit The invention relates to a continuous process for producing chlorine dioxide comprising the steps of continuously: a) feeding to a reactor (1) an acid, hydrogen peroxide and alkali metal chlorate; b) reactin... | 03/23/2010 |
| 7285255 | Deodorizing and sanitizing employing a wicking device A device and method for sanitizing and deodorizing including the selective transportation of a sanitizing composition by the capillary action of a wick to an acidic composition which may be held in a reservoir, or which also may be selectively transported through th... | 10/23/2007 |
| 7252096 | Methods of simultaneously cleaning and disinfecting industrial water systems On-Line and Off-Line methods of simultaneously cleaning and disinfecting an industrial water system are described and claimed. The methods involve the addition to the water of the industrial water system of a Compound selected from the group consisting of the alkali... | 08/07/2007 |
| 7195744 | Device for holding a container for a composition that produces an antimicrobially active gas A device and method for cleaning and deodorizing a unit having an enclosed space not otherwise easily accessible for cleaning and deodorizing. ... | 03/27/2007 |
| 7169237 | Stabilization of alkaline hydrogen peroxide A stabilized basic aqueous hydrogen peroxide composition is disclosed. The composition contains about 0.3 wt % to about 15 wt % of hydrogen peroxide; water; and a stabilizer system that contains about 10 ppm to about 1% of a stannate stabilizer; 10 ppm to about 1% o... | 01/30/2007 |
| 7128879 | Chemical generator using hydro-logic system A chemical generator having inlets for receiving multiple reactant and water streams; a dilution chamber; a reaction chamber operably connected to the inlets and to the dilution chamber; an eductor operably receiving the water stream from the one of the inlets and c... | 10/31/2006 |
| 7087208 | Methods for making chlorous acid and chlorine dioxide Chlorous acid is generated from a chlorite salt precursor, a chlorate salt precursor, or a combination of both by ion exchange. The ion exchange material facilitates the generation of chlorous acid by simultaneously removing unwanted cations from solution and adding... | 08/08/2006 |
| 7087190 | Composition for the production of chlorine dioxide using non-iodo interhalides or polyhalides and methods of making and using the same A composition for the generation of chlorine dioxide including at least one non-iodo interhalide, polyhalide or salt thereof having the formula BrmClnFoXp wherein m=0–3, n=0–4, o=0–3, p=0–2, X i... | 08/08/2006 |
| 7070710 | Chemical composition and method The invention relates to a novel composition useful as a feed at production of chlorine dioxide, said composition being an aqueous solution comprising from about 1 to about 6.5 moles/liter of alkali metal chlorate, from about 1 to about 7 moles/liter of hydrogen per... | 07/04/2006 |
| 7029705 | Nasal hygiene method and composition A method is disclosed of practicing nasal hygiene comprising the steps of applying to a person's nostril a non-irritating hygienic composition consisting essentially of a product of compounding under homogenizing conditions water, 0.01% to 5% by weight, as chlorine ... | 04/18/2006 |
| 6972121 | Advanced control strategies for chlorine dioxide generating processes Chlorine dioxide generating processes of the single vessel type which produce chlorine dioxide of high purity are monitored and controlled by a computer using Advanced Control Strategies for steady, stable operation with optimum chemical usage on the basis of a desi... | 12/06/2005 |
| 6921521 | Method of producing chlorine dioxide employs alkaline chlorate in a mineral acid medium and urea as a reducing agent A method of producing chlorine dioxide (ClO2) is described which employs Urea as a reducing agent to reduce alkaline chlorate (NaClO3 or KClO3) in a mineral acid medium. The method of the invention can, for example, by means of a ver... | 07/26/2005 |
| 6913741 | System and process for producing halogen oxides A system and process for oxidizing inorganic or organic species is disclosed. The system and process includes feeding a dilute aqueous alkali metal halite solution into a cation exchange column, wherein the cation exchange column contains a cation exchange material;... | 07/05/2005 |
| 6840251 | Methods of simultaneously cleaning and disinfecting industrial water systems On-Line and Off-Line methods of simultaneously cleaning and disinfecting an industrial water system are described and claimed. The methods involve the addition to the water of the industrial water system of a Compound selected from the group consisting of the alkali... | 01/11/2005 |
| 6790427 | Process for producing chlorine dioxide The invention concerns a process and an apparatus for continuously producing chlorine dioxide, the process comprising the steps of feeding chlorate ions, acid and hydrogen peroxide as aqueous solutions to a reactor; reducing chlorate ions in the reacto... | 09/14/2004 |
| 6635230 | Method for producing chlorine dioxide A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydro... | 10/21/2003 |
| 6605558 | Composition for producing chlorine dioxide A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydro... | 08/12/2003 |
| 6585950 | Method of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide comprising the steps of reducing chlorate ions in an acid reaction medium maintained in a reaction zone of a chlorine dioxide generator, which reaction medium contains alkali metal ions and ... | 07/01/2003 |
| 6576213 | Method of producing chlorine dioxide The invention relates to method of producing chlorine dioxide comprising the steps of: providing a reactor with an aqueous acidic reaction medium containing chlorate ions; reacting said chlorate ions with hydrogen peroxide as a reducing agent in such prop... | 06/10/2003 |
| 6555085 | Method of improving yield of chlorine dioxide generation processes A greater yield of chlorine dioxide from a chlorine dioxide generating process is obtained by providing acidic or acidity-generating components in the product chlorine dioxide solution to provide a chlorine dioxide solution having a pH below about 5.5.... | 04/29/2003 |
| 6423289 | Method of producing chlorine dioxide using sodium chlorate and a water-retaining substance impregnated in zeolite or in aqueous solution A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydro... | 07/23/2002 |
| 6387344 | Chemical composition and method The invention relates to a novel composition useful as a feed at production of chlorine dioxide, said composition being an aqueous solution comprising from about 1 to about 6.5 moles/liter of alkali metal chlorate, from about 1 to about 7 moles/liter of h... | 05/14/2002 |
| 6287533 | Production of chlorine dioxide by chemical reduction of ammonium chlorate in aqueous acidic solution A novel method is described whereby chlorine dioxide is produced through the chemical reduction of ammonium chlorate in an aqueous acidic solution. The reduction reaction takes place at elevated temperatures with or without a catalyst. The reducing agent ... | 09/11/2001 |
| 6251357 | High purity alkali metal chlorite and method of manufacture Alkali metal chlorite, particularly sodium chlorite, is produced with a low carbonate level by combining a chlorine dioxide generating system operating at subatmospheric pressure with a chlorite formation reactor in which the chlorine dioxide reacts with ... | 06/26/2001 |
| 5965004 | Chlorine dioxide generation for water treatment Chlorine dioxide is generated by electrochemical oxidation of sodium chlorite in an anode compartment of a cation-exchange membrane-divided cell in the presence of significant quantities of sodium chlorate and is recovered in a suitable recipient medium b... | 10/12/1999 |
| 5932085 | Chlorine dioxide generation for water treatment Chlorine dioxide is generated by electrochemical oxidation of sodium chlorite in an anode compartment of a cation-exchange membrane-divided cell and is recovered in a suitable recipient medium by passing the chlorine dioxide through a hydrophobic micropor... | 08/03/1999 |
| 5895638 | Method of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide by the reduction of chlorate ions with hydrogen peroxide as a reducing agent in a tubular reactor, preferably in the presence of a mineral acid, wherein the preferable degree of chlorate con... | 04/20/1999 |
| 5858322 | Process of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide comprising the steps: Providing a reactor with an aqueous acidic reaction medium containing alkali metal chlorate and sulfate; reducing chlorate ions in said reaction medium to form chlorine... | 01/12/1999 |
| 5853689 | Method for producing chlorine dioxide by activating an impregnated zeolite crystal mixture, and mixtures for performing such method A method for producing chlorine dioxide by activating a mixture of impregnated zeolite crystals, the mixture itself, and a method for regenerating the mixture after chlorine dioxide production. The activation is accomplished by causing water or a moisture... | 12/29/1998 |
| 5851374 | Process for production of chlorine dioxide Chlorine dioxide is produced by reaction of chlorate ions, usually provided by sodium chlorate, with a persulfate in an aqueous acid reaction medium containing sulfuric acid. By-product sodium sulfate, sulfuric acid feedstock or mixture may be electrolyze... | 12/22/1998 |
| 5770171 | Process for production of chlorine dioxide A process for production of chlorine dioxide which is substantially free of by product chlorine. Chlorine-dioxide is produced from an alkali metal chlorate, a mineral acid and a reducing agent such as methanol in a reaction medium maintained at an acid no... | 06/23/1998 |
| 5693252 | Generation of chlorine dioxide in a non-aqueous medium A method of preparing chlorine dioxide in a non-aqueous liquid is disclosed. An aqueous solution of chlorine dioxide is mixed and agitated with a non-aqueous liquid. The chlorine dioxide is extracted into the non-aqueous liquid. In a preferred embodiment,... | 12/02/1997 |
| 5676920 | Chlorine dioxide generating process Chlorine dioxide is produced by reaction of sodium chlorate, a reducing agent, preferably methanol or hydrogen peroxide, and sulfuric acid at the boiling point of the reaction medium under a subatmospheric pressure. Present in the reaction medium is a com... | 10/14/1997 |
| 5674466 | Method of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide comprising the steps of reducing chlorate ions in an acid reaction medium maintained in a reaction zone of a chlorine dioxide generator, which reaction medium contains alkali metal ions and ... | 10/07/1997 |
| 5599518 | Catalytic process for chlorine dioxide generation from chloric acid A process and apparatus for producing chlorine dioxide comprising chemically reducing chloric acid with water in the presence of any oxygen-evolving catalyst and in the absence of another acid or an added reducing agent, thereby producing chlorine dioxide... | 02/04/1997 |
| 5593653 | Metathesis of acidic by-product of chlorine dioxide generating process Sodium sesquisulfate produced in crystalline form in a high acidity highly efficient chlorine dioxide generating process is converted by metathesis to crystalline anhydrous neutral sodium sulfate and the acid recovered as a result is recycled to the chlor... | 01/14/1997 |
| 5565182 | Process of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide using, in a first alternative atmospheric pressure and hydrogen peroxide in the reaction medium optionally with an electrolytic cell. In a second alternative, either atmospheric or subatmosp... | 10/15/1996 |
| 5545389 | Process for the production of chlorine dioxide A process for the production of chlorine dioxide by reacting at least one of chloric acid and an alkali metal chlorate, and hydrogen peroxide as the reducing agent in such proportions that chlorine dioxide is produced in a reaction medium. A mixture compr... | 08/13/1996 |
| 5523072 | Process of producing chlorine dioxide Disclosed is a process of producing chlorine dioxide having the steps of providing a reactor with an aqueous acidic reaction medium containing alkali metal chlorate and phosphate; reducing chlorate ions in the reaction medium to form chlorine dioxide; wit... | 06/04/1996 |
| 5487881 | Process of producing chlorine dioxide The invention relates to a process of producing chlorine dioxide using, in a first alternative atmospheric pressure and hydrogen peroxide in the reaction medium optionally with an electrolytic cell. In a second alternative, either atmospheric or subatmosp... | 01/30/1996 |
