Patents by Inventor Takako Hirano
Takako Hirano has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8420403Abstract: A method for evaluating the caking property of sodium hydrogencarbonate crystal particles, characterized in that sodium hydrogencarbonate crystal particles are hermetically sealed in a packaging material having a water vapor transmission rate of at least 3 g/(m2·24 h) (at 40° C. with a relative humidity difference of 90%) as stipulated in JIS K7129 and left at rest at a temperature of from 17 to 35° C. at a carbon dioxide gas concentration of from 0.03 to 0.05 vol % at a relative humidity of from 40 to 95% for from 2 weeks to 3 months, and the proportion of agglomerated sodium hydrogencarbonate crystal particles is determined to evaluate the caking tendency. A novel test method for evaluating the caking property of sodium hydrogencarbonate crystal particles, capable of providing results of the caking property test with high reproducibility, quantitatively with high versatility, can be provided.Type: GrantFiled: January 3, 2007Date of Patent: April 16, 2013Assignee: Asahi Glass Company, LimitedInventors: Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai, Takako Hirano
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Patent number: 8236268Abstract: A process for producing sodium hydrogencarbonate crystal particles having a low caking property, which entails subjecting sodium hydrogencarbonate crystal particles having an average particle size of from 50 to 500 ?m based on the mass to heat treatment at a temperature of from 70 to 95° C. by a heating gas having a carbon dioxide gas concentration of at most the concentration calculated by the formula: Carbon dioxide gas concentration=0.071×e(0.1×T)×R(?0.0005×T?0.9574), where T (° C.) is the temperature of sodium hydrogencarbonate crystals, and R (%) is the relative humidity around the crystals at the temperature of the crystals, provided that the upper limit of the carbon dioxide gas concentration is 100 vol % to form anhydrous sodium carbonate on the surface of the sodium hydrogencarbonate crystal particles with a content of anhydrous sodium carbonate of from 0.03 to 0.4 mass % in the sodium hydrogencarbonate crystals.Type: GrantFiled: December 27, 2006Date of Patent: August 7, 2012Assignee: Asahi Glass Company, LimitedInventors: Hachirou Hirano, Takako Hirano, legal representative, Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai
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Sodium hydrogencarbonate crystal particles having low caking property and process for producing them
Patent number: 7485369Abstract: Sodium hydrogencarbonate crystal particles, which comprise sodium hydrogencarbonate crystal particles having an average particle size of from 50 to 500 ?m based on the mass, and anhydrous sodium carbonate, and sodium carbonate monohydrate and/or Wegscheider's salt, present on the surface of the sodium hydrogencarbonate crystal particles in such amounts that the total content of anhydrous sodium carbonate, sodium carbonate monohydrate, Wegscheider's salt and sodium sesquicarbonate in the sodium hydrogencarbonate crystal particles is from 0.04 to 1 mass % as calculated as anhydrous sodium carbonate, anhydrous sodium carbonate accounts for at least 40 mass % of the total content, and sodium carbonate monohydrate and/or Wegscheider's salt accounts for from 5 to 60 mass % of the total content. Sodium hydrogencarbonate crystal particles having a low caking property, which are useful in the field of food products, pharmaceuticals, bath additives, etc.Type: GrantFiled: January 3, 2007Date of Patent: February 3, 2009Assignee: Asahi Glass Company, LimitedInventors: Takako Hirano, legal representative, Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai, Hachirou Hirano -
Publication number: 20090016949Abstract: Sodium hydrogencarbonate crystal particles excellent in anti-caking property and anti-thermal decomposition property, and its production process, are provided. Sodium hydrogencarbonate crystal particles whose color 1 second after dropping of a phenolphthalein solution having a predetermined composition, is R=245 to 255, G=243 to 255 and B=245 to 255 in RGB 256 tone notation. The sodium hydrogencarbonate crystal particles are produced by subjecting sodium hydrogencarbonate crystal particles to a bicarbonation treatment in a humidified carbon dioxide gas atmosphere.Type: ApplicationFiled: September 12, 2008Publication date: January 15, 2009Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hachirou Hirano, Takako Hirano, Hisakazu Arima, Shintaro Kikuchi, Fumiaki Nakashima, Shigeru Sakurai
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Publication number: 20070253879Abstract: To provide a method for removing a halogen series gas, which has high capability of treating a halogen series gas, can prevent ignition of an adsorbing agent, is free from formation of carbon dioxide and can reduce generation of wastes, and a removing agent to be used for the method. The method for removing a halogen series gas comprises bringing a gas comprising at least one halogen series gas selected from the group consisting of F2, Cl2, Br2, I2 and a compound which undergoes hydrolysis to form a hydrogen halide or hypohalogenous acid into contact with a granulated product comprising from 80 to 99.9 mass % of an alkali metal base and from 0.1 to 20 mass % of a thiosulfate based on the total mass of the granulated product, in the presence of water, to remove the halogen series gas.Type: ApplicationFiled: June 13, 2007Publication date: November 1, 2007Applicant: Asahi Glass Company, LimitedInventors: Shigeru SAKURAI, Hachirou Hirano, Takako Hirano, Hisakazu Arima
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Publication number: 20070178037Abstract: A process for producing sodium hydrogencarbonate crystals, which comprise subjecting sodium hydrogencarbonate crystal powder having an average particle size of from 50 to 500 ?m based on the mass to heat treatment at a temperature of from 70 to 95° C. by a heating gas having a carbon dioxide gas concentration of at most the concentration calculated by the following formula (1): Carbon dioxide gas concentration=0.07l×e(0.1×T)×R(?0.0005×T?0.9574)??(1) (wherein T is the temperature (%) of sodium hydrogencarbonate crystals, and R is the relative humidity (%), provided that the upper limit of the carbon dioxide gas concentration is 100 vol %) with reference to the graph of FIG. 1 wherein the horizontal axis (X-axis) represents the relative humidity and the vertical axis (Y-axis) represents the carbon dioxide gas concentration, to form anhydrous sodium carbonate on the surface of the sodium hydrogencarbonate crystal particles with a content of anhydrous sodium carbonate of from 0.03 to 0.Type: ApplicationFiled: December 27, 2006Publication date: August 2, 2007Applicant: ASAHI GLASS CO., LTD.Inventors: Hachirou Hirano, Takako Hirano, Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai
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SODIUM HYDROGENCARBONATE CRYSTAL PARTICLES HAVING LOW CAKING PROPERTY AND PROCESS FOR PRODUCING THEM
Publication number: 20070104635Abstract: Sodium hydrogencarbonate crystal particles, which comprise sodium hydrogencarbonate crystal particles having an average particle size of from 50 to 500 ?m based on the mass, and anhydrous sodium carbonate, and sodium carbonate monohydrate and/or Wegscheider's salt, present on the surface of the sodium hydrogencarbonate crystal particles in such amounts that the total content of anhydrous sodium carbonate, sodium carbonate monohydrate, Wegscheider's salt and sodium sesquicarbonate in the sodium hydrogencarbonate crystal particles is from 0.04 to 1 mass % as calculated as anhydrous sodium carbonate, anhydrous sodium carbonate accounts for at least 40 mass % of the total content, and sodium carbonate monohydrate and/or Wegscheider's salt accounts for from 5 to 60 mass % of the total content. Sodium hydrogencarbonate crystal particles having a low caking property, which are useful in the field of food products, pharmaceuticals, bath additives, etc.Type: ApplicationFiled: January 3, 2007Publication date: May 10, 2007Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Hachirou Hirano, Takako Hirano, Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai -
Publication number: 20070105226Abstract: A method for evaluating the caking property of sodium hydrogencarbonate crystal particles, characterized in that sodium hydrogencarbonate crystal particles are hermetically sealed in a packaging material having a water vapor transmission rate of at least 3 g/(m2·24h) (at 40° C. with a relative humidity difference of 90%) as stipulated in JIS K7129 and left at rest at a temperature of from 17 to 35° C. at a carbon dioxide gas concentration of from 0.03 to 0.05 vol % at a relative humidity of from 40 to 95% for from 2 weeks to 3 months, and the proportion of agglomerated sodium hydrogencarbonate crystal particles is determined to evaluate the caking tendency. A novel test method for evaluating the caking property of sodium hydrogencarbonate crystal particles, capable of providing results of the caking property test with high reproducibility, quantitatively with high versatility, can be provided.Type: ApplicationFiled: January 3, 2007Publication date: May 10, 2007Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hachirou HIRANO, Takako Hirano, Shintaro Kikuchi, Fumiaki Nakashima, Hisakazu Arima, Shigeru Sakurai