Patents by Inventor Masaji Kurosawa
Masaji Kurosawa 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).
-
Patent number: 7670409Abstract: A method for processing an organic solvent-containing air is disclosed. The method can be operated in spite of a rapid fluctuation of the concentration of the organic solvents in the air to be processed, specifically, the method does not increase the organic solvent content in the air to be emitted into the atmosphere after processing, even if the concentration of the organic solvents rapidly changes. The method comprises carrying out simultaneously and continuously an adsorbing-removing step, a regenerating step, and a combustion step, while mixing a purified air produced in the adsorbing-removing step with an exhaust gas from a combustion furnace produced in the combustion step, and decomposing the organic solvents in the mixture by oxidation.Type: GrantFiled: February 26, 2007Date of Patent: March 2, 2010Assignee: Nichias CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Tomohiro Deguchi
-
Patent number: 7582139Abstract: A method for processing an organic solvent-containing air capable of being operated in spite of a rapid fluctuation of the concentration of organic solvents in the air to be processed and capable of using a combustion furnace exhaust gas as an air for regenerating dehumidifying member is provided. The method comprises carrying out simultaneously and continuously a dehumidification step (a), an adsorption-removing step (b), an adsorbing member-regeneration step (c), a combustion step (d), and a dehumidifying member-regeneration step (e) comprising mixing the adsorption-treated air produced in the adsorbing-removing step (b) with a combustion furnace exhaust gas produced in the combustion step (d) to obtain a mixed gas, decomposing the organic solvents in the mixed gas by oxidation, and causing the resulting purified gas to flow through the dehumidifying member which has adsorbed moisture, thereby regenerating the dehumidifying member.Type: GrantFiled: February 26, 2007Date of Patent: September 1, 2009Assignee: Nichias CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Tomohiro Deguchi
-
Publication number: 20070209510Abstract: A method for processing an organic solvent-containing air capable of being operated in spite of a rapid fluctuation of the concentration of organic solvents in the air to be processed and capable of using a combustion furnace exhaust gas as an air for regenerating dehumidifying member is provided. The method comprises carrying out simultaneously and continuously a dehumidification step (a), an adsorption-removing step (b), an adsorbing member-regeneration step (c), a combustion step (d), and a dehumidifying member-regeneration step (e) comprising mixing the adsorption-treated air produced in the adsorbing-removing step (b) with a combustion furnace exhaust gas produced in the combustion step (d) to obtain a mixed gas, decomposing the organic solvents in the mixed gas by oxidation, and causing the resulting purified gas to flow through the dehumidifying member which has adsorbed moisture, thereby regenerating the dehumidifying member.Type: ApplicationFiled: February 26, 2007Publication date: September 13, 2007Applicant: NICHIAS CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Tomohiro Deguchi
-
Publication number: 20070209511Abstract: A method for processing an organic solvent-containing air is disclosed. The method can be operated in spite of a rapid fluctuation of the concentration of the organic solvents in the air to be processed, specifically, the method does not increase the organic solvent content in the air to be emitted into the atmosphere after processing, even if the concentration of the organic solvents rapidly changes. The method comprises carrying out simultaneously and continuously an adsorbing-removing step, a regenerating step, and a combustion step, while mixing a purified air produced in the adsorbing-removing step with an exhaust gas from a combustion furnace produced in the combustion step, and decomposing the organic solvents in the mixture by oxidation.Type: ApplicationFiled: February 26, 2007Publication date: September 13, 2007Applicant: NICHIAS CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Tomohiro Deguchi
-
Patent number: 7217313Abstract: A dehumidifying system supplies a gas free of organic substances. The dehumidifying system includes a holding case, and a rotor rotatably held in the holding case and bearing an adsorbent. The interior of the holding case is divided into an adsorbing zone and a regenerating zone by partition plates attached to the holding case. A process gas is supplied into the adsorbing zone. The process gas processed in the adsorbing zone is supplied into an objective space. A regenerating gas is supplied into the regenerating zone to eliminate moisture and organic substances adsorbed by the adsorbent in the adsorbing zone from the adsorbent.Type: GrantFiled: May 26, 2003Date of Patent: May 15, 2007Assignees: Tokyo Electron Limited, Nichias CorporationInventors: Hiroshi Motono, Takashi Tanahashi, Masaji Kurosawa, Katsuhiro Yamashita
-
Publication number: 20050172805Abstract: A dehumidifying system supplies a gas free of organic substances. The dehumidifying system includes a holding case, and a rotor rotatably held in the holding case and bearing an adsorbent. The interior of the holding case is divided into an adsorbing zone and a regenerating zone by partition plates attached to the holding case. A process gas is supplied into the adsorbing zone. The process gas processed in the adsorbing zone is supplied into an objective space. A regenerating gas is supplied into the regenerating zone to eliminate moisture and organic substances adsorbed by the adsorbent in the adsorbing zone from the adsorbent.Type: ApplicationFiled: May 26, 2003Publication date: August 11, 2005Inventors: Hiroshi Motono, Takashi Tanahashi, Masaji Kurosawa, Katsuhiro Yamashita
-
Publication number: 20040231179Abstract: The present invention provides a dry air supply device for supplying, into a target space, dry air from which moisture and organic materials have been removed, the device comprising: a plurality of rotors disposed in series, each of which is configured to carry an adsorbent thereon and is rotatably supported; partition members which are arranged at outermost end portions of the rotors and between the rotors so as to partition a rotary zone of each rotor into an adsorption zone, a regeneration zone and a cooling zone; a driving member which rotatably drives the rotors; a supply passage which allows sucked air to pass through the adsorption zone to obtain dry air from which moisture and organic materials have been removed, and which supplies the dry air into the target space; and an exhaust passage which allows a portion of the dry air to pass through the cooling zone, then heats the cooled air, and then allows the heated air to pass through the regeneration zone to separate the moisture and the organic materiaType: ApplicationFiled: April 22, 2004Publication date: November 25, 2004Applicant: Nichias CorporationInventors: Noriaki Kodama, Masaji Kurosawa, Katsuhiro Yamashita
-
Patent number: 6527837Abstract: A rotor and a sealing device for a rotary adsorber is disclosed. The rotor includes a rim, spokes, arc-shaped sectors, a calking material, and a thermal insulating seal. The spokes divides the rim into arc-shaped portions. The sectors are disposed in the rim and include a gas adsorptive element. The calking material is provided between each sector and one of the rim and the spoke. The thermal insulating seal covers end surfaces of the spokes and joint portions of the sectors. The sealing device includes a sealing material, a mounting plate, a connecting portion, a rod member, and a spring. The sealing material is slidably interposed between a partitioning frame of the rotary adsorber and the mounting plate. The connecting portion fixes the mounting plate to the partitioning frame. The rod member is fixed to the connecting portion. The spring is interposed between the sealing material and the connecting portion.Type: GrantFiled: March 13, 2001Date of Patent: March 4, 2003Assignee: Nichias CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Yasuhiro Tanaka, Shusaku Asahina
-
Patent number: 6344073Abstract: A dehumidifying material comprising: 90.0 parts by weight to 99.9 parts by weight of silicon dioxide which is silica gel; and 0.1 part by weight to 10.0 parts by weight of an iron oxide or a mixture of the iron oxide and another metal oxide and a dehumidifying element incorporating an inorganic fiber sheet supporting the dehumidifying material, the dehumidifying material being obtained by allowing alkali silicate or alkokysilane to adhere to an inorganic fiber sheet to gel the inorganic fiber sheet, by immersing the inorganic fiber sheet in solution containing iron salt or iron and other metal salt and by drying the inorganic fiber sheet.Type: GrantFiled: June 28, 2000Date of Patent: February 5, 2002Assignee: Nichias CorporationInventors: Masaji Kurosawa, Minoru Tanaka, Yuji Matsumura, Haruko Sasaki
-
Publication number: 20010026110Abstract: A rotor and a sealing device for a rotary adsorber is disclosed. The rotor includes a rim, spokes, arc-shaped sectors, a calking material, and a thermal insulating seal. The spokes divides the rim into arc-shaped portions. The sectors are disposed in the rim and include a gas adsorptive element. The calking material is provided between each sector and one of the rim and the spoke. The thermal insulating seal covers end surfaces of the spokes and joint portions of the sectors. The sealing device includes a sealing material, a mounting plate, a connecting portion, a rod member, and a spring. The sealing material is slidably interposed between a partitioning frame of the rotary adsorber and the mounting plate. The connecting portion fixes the mounting plate to the partitioning frame. The rod member is fixed to the connecting portion. The spring is interposed between the sealing material and the connecting portion.Type: ApplicationFiled: March 13, 2001Publication date: October 4, 2001Applicant: NICHIAS CORPORATIONInventors: Masaji Kurosawa, Katsuhiro Yamashita, Yasuhiro Tanaka, Shusaku Asahina
-
Patent number: 6080227Abstract: A VOC concentrating apparatus includes a honeycomb rotor. In order to lower concentration at an exit of adsorption and at the same time to be able to regulate the amount of air flow introduced into a desorbing zone, independently from the amount of cooling air, there are disposed a cooling zone, desorbing zone and an adsorbing zone in the honeycomb rotor. The honeycomb rotor rotates and thus passes through the zones one after another. After gas to be treated has passed through the adsorbing zone, concentration of VOC in the gas is measured on the exit side by a concentration detector. The cooling air is divided by a damper for regulating the amount of air flow, after having entered the cooling zone, and a part thereof enters the desorbing zone through a heater. Further air coming out therefrom is heated again by a heater to enter the desorbing zone and concentrated gas is removed.Type: GrantFiled: November 4, 1998Date of Patent: June 27, 2000Assignee: Nichias CorporationInventors: Masaji Kurosawa, Katsuhiro Yamashita, Takeya Kobayashi
-
Patent number: 5269140Abstract: An adsorber comprising zeolite retained on structure of substantially inorganic fibers disposed in the exhaust gas stream of an engine. The invention has particular application to purification of exhaust gas streams of methanol fueled engines in combination with catalytic means for decomposing undesired organic matter from the exhaust gas stream. The adsorber adsorbs organic matter from the exhaust gas at relatively low exhaust gas temperatures at which the catalyst is of reduced effectiveness, and desorbs organic matter at elevated temperatures at which the catalyst is of heightened effectiveness.Type: GrantFiled: October 24, 1990Date of Patent: December 14, 1993Assignee: Nichias CorporationInventors: Shigeo Take, Masaji Kurosawa
-
Patent number: 5158753Abstract: An engine exhaust gas purifying device, and process, wherein the device provides a catalyst device for treating the exhaust gas, an adsorbing device for adsorbing materials from the exhaust gas and a heat exchanger. The device is configured so that high temperature exhaust gas from the engine passes through a high temperature side of the heat exchanger prior to passing through the adsorbing device. After passing through the adsorbing device, the gas passes through the low temperature side of the heat exchanger and then passes to the catalyst device. In an alternate embodiment of the present invention, the catalyst can be disposed in the low temperature side of the heat exchanger.Type: GrantFiled: December 12, 1990Date of Patent: October 27, 1992Assignee: Nichias CorporationInventors: Shigeo Take, Masaji Kurosawa
-
Patent number: 4992319Abstract: A process for fabricating an activated carbon supporting honeycomb structure is disclosed which comprises the following steps: dipping an inorganic fiber made paper in a suspension of fine particulate activated carbon and a binder or coating the suspension over the inorganic fiber made paper; drying the paper so that the activated carbon will fill the voids between the fibers in the paper; superposing sheets of the activated carbon filled paper alternately with corrugated sheets of the same paper; and bonding the individual sheets together with an adhesive to form a honeycomb structure.Type: GrantFiled: May 16, 1989Date of Patent: February 12, 1991Assignee: Nichias CorporationInventors: Masaji Kurosawa, Isao Terada, Hideto Nakada
-
Patent number: 4911227Abstract: Disclosed are a heat exchange element obtained by forming a sheet material or honeycomb structure having a shape required for a heat exchange element from an organic filler-filled sheet made from an acid-resistant glass fiber, dipping the formed sheet material or honeycomb structure in a suspension of an inorganic filler, at least a part of which is composed of scaly particles, and fixing the inorganic filler applied by the dipping treatment to the sheet material or honeycomb structure by a binder, and a process for the preparation of this heat exchange element and a heat exchange apparatus comprising this heat exchange element. A high acid resistance and a high gas-intercepting property can be maintained even by using a thin and light sheet material.Type: GrantFiled: May 13, 1988Date of Patent: March 27, 1990Assignee: Nippon Oil Co., Ltd.Inventors: Naohide Saito, Junichi Tamura, Shigeo Take, Masaji Kurosawa, Isao Terada
-
Patent number: 4789585Abstract: A heat transfer element for cross flow heat exchanger consists of ceramic corrugated and planar plates. A plurality of the heat transfer elements are stacked up in such a manner that the direction of corrugation in adjacent elements intersects at right angles to form a heat transfer block for cross flow heat exchanger. Concave portions of corrugation, which confront soot-blowing flow for removing soot deposited onto the heat transfer surfaces of heat transfer block, are filled with ceramic solids. Also concave portions of corrugation corresponding to the corners, which abut the packings attached when the heat transfer block is installed on a casing, are filled with ceramic solids.Type: GrantFiled: June 15, 1987Date of Patent: December 6, 1988Assignee: Nippon Oil Co. Ltd.Inventors: Naohide Saito, Junichi Tamura, Masaji Kurosawa, Isao Terada
-
Patent number: 4650621Abstract: The present invention provides a method of preparing a heat exchange element comprising a molded product of a paper-like material made of ceramic fibers as a matrix, the interstices among the ceramic fibers being uniformly filled with molecular sieve particulates having an average particle diameter of 5.5.mu. or less, the ceramic fibers and the molecular sieve particulates being bound by a silicic acid gel.Type: GrantFiled: November 14, 1985Date of Patent: March 17, 1987Assignees: Toho Gas Co., Ltd., Nichias Corporation, Honshuseishi Kabushiki KaishaInventors: Yoshiharu Sago, Masaji Kurosawa, Nobutaka Kanamori
-
Patent number: 4608361Abstract: A process is disclosed for producing a sheet for a catalyst carrier for vapor-phase reactions which comprises mixing highly heat resistant ceramic fibers, organic fibers and an organic binder to form a slurry, forming the slurry into a paper sheet, impregnating the paper sheet with a silicon compound, converting the silicon compound to silica gel and heating the impregnated sheet to burn up the organic fibers and organic binder. The process produces an improved catalyst carrier for vapor-phase reactions having high porosity and good strength properties.Type: GrantFiled: December 8, 1983Date of Patent: August 26, 1986Assignees: Nichias Corporation, Honshu Paper Mfg. Co., Ltd., Sakai Chemical Industry Co., Ltd.Inventors: Nobutaka Kanamori, Masaji Kurosawa
-
Patent number: 4595403Abstract: The present invention provides a heat exchange element comprising a molded product of a paper-like material made of ceramic fibers as a matrix, the interstices among the ceramic fibers being uniformly filled with molecular sieve particulates having an average particle diameter of 5.5.mu. or less, the ceramic fibers and the molecular sieve particulates being bound by a silicic acid gel.Type: GrantFiled: August 29, 1984Date of Patent: June 17, 1986Assignees: Toho Gas Co. Ltd., Nichias Corporation, Honshuseishi Kabushiki KaishaInventors: Yoshiharu Sago, Masaji Kurosawa, Nobutaka Kanamori
-
Patent number: 4320202Abstract: Elastic foamed products or articles having a much better heat resistance than that of the asbestos fiber foamed mass, prepared by drying of an aqueous fiber-dispersed slurry retaining bubbles and consisting essentially of inorganic fibers, synthetic fluormica of the non-restrictive swelling type and surface active agents. In the elastic foamed products, the inorganic fibers having films of the fluormica formed therebetween are evenly entangled with each other, said films having bubbles retained therein.Type: GrantFiled: March 5, 1980Date of Patent: March 16, 1982Assignee: Nichias CorporationInventors: Kyukichi Yamamoto, Masaji Kurosawa, Taro Matsui