Patents Assigned to Universal Co., Ltd.
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Patent number: 11911747Abstract: Provided is an ammonia decomposition catalyst that exhibits high durability while maintaining high ammonia decomposition activity and low emissions of nitrogen oxides, for example, even under an atmosphere with a steam concentration of about 10% by volume. An ammonia decomposition catalyst capable of decomposing ammonia contained in an exhaust gas, the catalyst comprising an inorganic oxide loaded with an alloy containing Pt and Pd, and a zeolite.Type: GrantFiled: December 26, 2019Date of Patent: February 27, 2024Assignee: NIKKI-UNIVERSAL CO., LTD.Inventors: Tomoo Ikoma, Toshiya Nashida
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Patent number: 11642660Abstract: A method for purifying a gas inside a polymer film production furnace with the use of the purification catalyst is provided. A purification catalyst for a gas inside a polymer film production furnace, contains a mixed oxide composed of a manganese-based oxide containing manganese and potassium and having a cryptomelane structure, and copper oxide. A method for purifying a gas inside a polymer film production furnace, includes a step 1 of bringing hot air containing volatile and/or sublimable organic substances, generated during production of a polymer film by the polymer film production furnace, into contact with the catalyst provided inside or outside the furnace, at a temperature in the range of 200 to 350° C. to decompose the organic substances oxidatively, and a step 2 of refluxing all or a part of a resultant decomposition gas to the polymer film production furnace.Type: GrantFiled: July 24, 2020Date of Patent: May 9, 2023Assignee: NIKKI-UNIVERSAL CO., LTD.Inventors: Toshiya Nashida, Naoki Tone
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Publication number: 20230085417Abstract: The present invention provides a supported metal catalyst with excellent effectiveness factor of active metal particles which are also free from deactivation by contacting with ionomer. According to the present invention, provided is a supported metal catalyst, comprising a support that is a collective body of conductive particles; and dispersed active metal particles supported on the conductive particles, wherein the conductive particles include a plurality of pores, an average entrance pore diameter of the pores is 1 to 20 nm, a standard deviation of the average entrance pore diameter is equal to or less than 50% of the average entrance pore diameter, a number fraction of the active metal particles supported in a surface layer region of the conductive particles divided by the total number of the active metal particles is equal to or more than 50%, and the surface layer region is a region on a surface of the conductive particles or a region in the pores within a depth of 15 nm from the surface.Type: ApplicationFiled: February 5, 2021Publication date: March 16, 2023Applicants: UNIVERSITY OF YAMANASHI, NIKKI-UNIVERSAL CO., LTD.Inventors: Toshihiro MIYAO, Hanako NISHINO, Kazutoshi HIGASHIYAMA, Makoto UCHIDA, Akihiro IIYAMA, Kazuya SHIBANUMA, Naoto KOIZUMI
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Publication number: 20220055023Abstract: Provided is an ammonia decomposition catalyst that exhibits high durability while maintaining high ammonia decomposition activity and low emissions of nitrogen oxides, for example, even under an atmosphere with a steam concentration of about 10% by volume. An ammonia decomposition catalyst capable of decomposing ammonia contained in an exhaust gas, the catalyst comprising an inorganic oxide loaded with an alloy containing Pt and Pd, and a zeolite.Type: ApplicationFiled: December 26, 2019Publication date: February 24, 2022Applicant: NIKKI-UNIVERSAL CO., LTD.Inventors: Tomoo IKOMA, Toshiya NASHIDA
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Publication number: 20200353451Abstract: A method for purifying a gas inside a polymer film production furnace with the use of the purification catalyst is provided. A purification catalyst for a gas inside a polymer film production furnace, contains a mixed oxide composed of a manganese-based oxide containing manganese and potassium and having a cryptomelane structure, and copper oxide. A method for purifying a gas inside a polymer film production furnace, includes a step 1 of bringing hot air containing volatile and/or sublimable organic substances, generated during production of a polymer film by the polymer film production furnace, into contact with the catalyst provided inside or outside the furnace, at a temperature in the range of 200 to 350° C. to decompose the organic substances oxidatively, and a step 2 of refluxing all or a part of a resultant decomposition gas to the polymer film production furnace.Type: ApplicationFiled: July 24, 2020Publication date: November 12, 2020Applicant: NIKKI-UNIVERSAL CO., LTD.Inventors: Toshiya NASHIDA, Naoki TONE
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Publication number: 20180304239Abstract: A high durability catalyst for decomposing volatile organic compounds (VOCs) or sublimable organic substances, generated inside a polymer film production furnace, at a high conversion rate is provided. A method for purifying a gas inside a polymer film production furnace with the use of the catalyst is also provided. Provided are a purification catalyst for a gas inside a polymer film production furnace, which contains a mixed oxide composed of a manganese-based oxide containing manganese and potassium and having a cryptomelane structure, and copper oxide; and a method for purifying a gas inside a polymer film production furnace, comprising a step 1 of bringing hot air containing volatile and/or sublimable organic substances, generated during production of a polymer film by the polymer film production furnace, into contact with the catalyst provided inside or outside the furnace, at a temperature in the range of 200 to 350° C.Type: ApplicationFiled: November 1, 2016Publication date: October 25, 2018Applicant: NIKKI-UNIVERSAL CO., LTD.Inventors: Toshiya NASHIDA, Naoki TONE
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Patent number: 8883667Abstract: A purification catalyst which prevents contamination within a reflow furnace, including flux components, while suppressing the generation of CO is provided. A purification catalyst for a reflow furnace gas, having one or two of zeolite and silica-alumina as an active ingredient.Type: GrantFiled: October 10, 2007Date of Patent: November 11, 2014Assignee: Nikki-Universal Co., Ltd.Inventors: Yoshiki Nakano, Takanobu Sakurai, Shinichi Ueno
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Patent number: 8575054Abstract: The present invention provides a catalyst composition which can decompose an organic nitrogen compound at a relatively low temperature to convert the compound to N2 and render it harmless in the purification of an exhaust gas containing the compound (nitrogen-based exhaust gas); a catalyst containing the catalyst composition; a method for producing the catalyst; and an exhaust gas purification apparatus containing the catalyst. By using a catalyst composition formed by mixing copper oxide particles and zeolite particles, an organic nitrogen compound and/or ammonia can be converted to N2 highly selectively. The catalyst composition of the present invention may further contain a manganese oxide and/or a precious metal.Type: GrantFiled: July 15, 2005Date of Patent: November 5, 2013Assignee: Nikki-Universal Co., Ltd.Inventors: Tomoo Ikoma, Takanobu Sakurai, Yoshiki Nakano
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Publication number: 20110268242Abstract: A recombination apparatus is provided to an off-gas system of a boiling water nuclear plant. An off-gas system pipe connected to a condenser is connected to the recombination apparatus. A catalyst layer filled with a catalyst for recombining hydrogen and oxygen is disposed in the recombination apparatus. The recombination catalyst has a percentage of the number of Pt particles whose diameters are in a range from more than 1 nm to not more than 3 nm to the numbers of Pt particles whose diameters are in a range from more than 0 nm to not more than 20 nm, falling within a range from 20 to 100%. The condenser discharges gas containing an organosilicon compound (ex. D5), hydrogen, and oxygen, which is introduced to the recombination apparatus. Use of the above recombination catalyst can improve the performance of recombining hydrogen and oxygen more than conventional catalysts and the initial performance of the catalyst can be maintained for a longer period of time.Type: ApplicationFiled: April 27, 2011Publication date: November 3, 2011Applicants: Nikki-Universal Co., Ltd., Hitachi-GE Nuclear Energy, Ltd.Inventors: Hidehiro IIZUKA, Motohiro AIZAWA, Toru KAWASAKI, Hirofumi MATSUBARA, Takashi NISHI, Shuichi KANNO, Yasuo YOSHII, Yoshinori EBINA, Takanobu SAKURAI, Tsukasa TAMAI, Michihito ARIOKA
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Publication number: 20100210887Abstract: A catalyst for producing a light olefin including a pentasil-type zeolite, alkaline earth metal atoms and aluminum atoms contained in the pentasil-type zeolite satisfying the following atomic ratio: [alkaline earth metal atom/aluminum atom]=0.2 to 15, the average value of the gradient of an adsorption isotherm of the pentasil-type zeolite measured by the nitrogen adsorption method being 30 or more at a relative pressure of 0.2 to 0.7.Type: ApplicationFiled: October 16, 2008Publication date: August 19, 2010Applicants: IDEMITSU KOSAN CO., LTD., NIKKI-UNIVERSAL CO., LTD.Inventors: Tomoko Shibata, Kenichi Wakui, Kinsho Furusawa, Tetsuya Saruwatari, Takashi Umeki, Masami Sawai, Nobuyuki Aoi, Kazuo Osada
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Patent number: 7727923Abstract: The challenge for the present invention is to provide a catalyst composition restrained from declining in performance over time in purifying an exhaust gas containing an organic compound a silicon compound, a catalyst containing the catalyst composition, and a method for producing the catalyst. This challenge is solved by using a catalyst composition containing zeolite added to precious metal-carried alumina, and the silicon resistance of the catalyst is improved greatly. The amount of acid of the zeolite added is preferably in the range of 0.4 mmol·NH3/g to 1.5 mmol·NH3/g.Type: GrantFiled: March 28, 2005Date of Patent: June 1, 2010Assignee: Nikki-Universal Co., Ltd.Inventors: Yoshiki Nakano, Takanobu Sakurai
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Publication number: 20090324454Abstract: A purification catalyst which prevents contamination within a reflow furnace, including flux components, while suppressing the generation of CO is provided. A purification catalyst for a reflow furnace gas, having one or two of zeolite and silica-alumina as an active ingredient.Type: ApplicationFiled: October 10, 2007Publication date: December 31, 2009Applicant: NIKKI-UNIVERSAL CO., LTD.Inventors: Yoshiki Nakano, Takanobu Sakurai, Shimichi Ueno
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Patent number: 7520912Abstract: It is intended to provide an air purification filter which has a high dry tensile strength, a high wet tensile strength in association with a high water resistance and a high water repellency and exhibits a bactericidal effect due to a gas phase reaction in a gas phase. Namely, an air purification filter having a high dry tensile strength, a high wet tensile strength (a high water resistance) and a high water repellency as well as a bactericidal effect which is obtained by blending a filter fiber having a functional group with a mixture of a modification enzyme which has an ionic polarity opposite to the ionic polarity of the whole filter fiber as described above and a bactericidal effect with an ionic synthetic resin binder having the opposite ionic polarity similar to the modification enzyme.Type: GrantFiled: October 16, 2002Date of Patent: April 21, 2009Assignees: Hokuetsu Paper Mills, Ltd., Nikki-Universal Co., Ltd.Inventors: Nobuyuki Sakadume, Toshihiko Soyama, Eiko Meguro, Kazuro Isomae, Mikiko Gokano
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Publication number: 20070286786Abstract: The present invention provides a catalyst composition which can decompose an organic nitrogen compound at a relatively low temperature to convert the compound to N2 and render it harmless in the purification of an exhaust gas containing the compound (nitrogen-based exhaust gas); a catalyst containing the catalyst composition; a method for producing the catalyst; and an exhaust gas purification apparatus containing the catalyst. By using a catalyst composition formed by mixing copper oxide particles and zeolite particles, an organic nitrogen compound and/or ammonia can be converted to N2 highly selectively. The catalyst composition of the present invention may further contain a manganese oxide and/or a precious metal.Type: ApplicationFiled: July 15, 2005Publication date: December 13, 2007Applicant: NIKKI-UNIVERSAL CO., LTD.Inventors: Tomoo Ikoma, Takanobu Sakurai, Yoshiki Nakano
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Patent number: 7163433Abstract: An adhesive strapless brassiere used for giving lift to a user's breast has two adhesive breast covers, a connector and a backing layer. Each adhesive breast cover is formed from a thin, pliable sheet and has a main, oblong first portion for covering a breast, and a vertical wing extending upwardly from the outside top edge. The adhesive breast covers are directly attached to a user's body by the adhesive. The connector is mounted between the two adhesive breast covers, and the backing layer is used to attach the adhesive breast covers before use. The adhesive strapless brassiere has a small volume and breathes, so a user will feel comfortable when wearing the brassiere. Furthermore, the adhesive strapless brassiere may be discarded after use.Type: GrantFiled: September 24, 2004Date of Patent: January 16, 2007Assignees: Bravo Universal Co., Ltd., Ce Soir Lingerie Co., Inc.Inventor: Hsien-Wei Chou
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Publication number: 20060054159Abstract: A twin-nozzle gas switch includes a unitary switch base, a pair of nozzles, a pair of valve members, a pair of cover members, and a pair of control rods. The switch base includes a pair of valve seats, each having a gas regulating section and a gas outlet section, and a tubular conduit connected integrally to the valve seats. Each nozzle is mounted at a respective gas outlet section. Each valve member is mounted rotatably in a respective gas regulating section. Each cover member is mounted at a respective gas regulating section. Each control rod extends through a respective cover member, and is connected to a respective valve member.Type: ApplicationFiled: September 16, 2004Publication date: March 16, 2006Applicant: HOSUN UNIVERSAL CO., LTD.Inventor: Wuu-Hung Lin
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Publication number: 20050221719Abstract: An adhesive strapless brassiere used for giving lift to a user's breast has two adhesive breast covers, a connector and a backing layer. Each adhesive breast cover is formed from a thin, pliable sheet and has a main, oblong first portion for covering a breast, and a vertical wing extending upwardly from the outside top edge. The adhesive breast covers are directly attached to a user's body by the adhesive. The connector is mounted between the two adhesive breast covers, and the backing layer is used to attach the adhesive breast covers before use. The adhesive strapless brassiere has a small volume and breathes, so a user will feel comfortable when wearing the brassiere. Furthermore, the adhesive strapless brassiere may be discarded after use.Type: ApplicationFiled: September 24, 2004Publication date: October 6, 2005Applicant: Bravo Universal Co., Ltd.Inventor: Hsien-Wei Chou
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Patent number: 6730144Abstract: An air purifying filter includes a modified enzyme immobilized on a surface of a carrier. The modified enzyme has been modified with a bonding agent that improves bonding. The surface of the carrier has not been rendered to be water repellant prior to immobilizing the modified enzyme on the surface of the carrier. The bonding agent improves bonding of the modified enzyme to the carrier.Type: GrantFiled: December 13, 2001Date of Patent: May 4, 2004Assignee: Nikki - Universal Co., Ltd.Inventors: Atsuo Tanaka, Mikiko Gokano, Kazuro Isomae
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Patent number: 6579352Abstract: An air purifying filter having an enzyme immobilized on the surface of a carrier is capable of direct killing or otherwise control of air-borne microorganisms which have been difficult to control by means of the conventional air purifying filters; and the filter is also capable of removing the retained microorganisms by killing or otherwise controlling them.Type: GrantFiled: January 22, 1999Date of Patent: June 17, 2003Assignee: Nikki-Universal Co., Ltd.Inventors: Atsuo Tanaka, Kazuro Isomae, Mikiko Gokano
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Patent number: 6524535Abstract: An adsorptive decomposition deodorizing element comprising of a heating unit having an electrical heating unit inserted between laminated mica plates and a deodorizing unit located on the peripheral surface of said heating unit which can be heated very quickly, gives little offensive odor even in the step of regeneration by heating, and has a light weight and an excellent processability.Type: GrantFiled: May 18, 2000Date of Patent: February 25, 2003Assignee: Nikki-Universal Co., Ltd.Inventors: Yoshiki Nakano, Eiki Iida, Ryouji Aikawa