Patents by Inventor Hajime Itoh
Hajime Itoh 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: 9636622Abstract: An accumulator has a tank and a desiccant. The tank separates refrigerant flowing to the tank into vapor-phase refrigerant and liquid-phase refrigerant, therein stores the liquid-phase refrigerant, and emits the vapor-phase refrigerant toward a suction side of a compressor. The desiccant is disposed in the tank and removing a water content from the refrigerant. Liquid-phase refrigerant included in the refrigerant flowing to the tank drops downward from a location that is located above the desiccant, and is stored in a lower portion in the tank. Vapor-phase refrigerant included in the refrigerant flowing to the tank is drawn through a suction port that is located above the desiccant to flow out of the tank. At least a part of the desiccant is exposed to vapor-phase refrigerant under a normal condition, and the desiccant is located at a location that is away from a dropping route of liquid-phase refrigerant in the tank.Type: GrantFiled: August 2, 2013Date of Patent: May 2, 2017Assignee: DENSO CORPORATIONInventors: Kurato Yamasaki, Teruyuki Hotta, Kazuhisa Makida, Hajime Itoh
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Publication number: 20150231549Abstract: An accumulator has a tank and a desiccant. The tank separates refrigerant flowing to the tank into vapor-phase refrigerant and liquid-phase refrigerant, therein stores the liquid-phase refrigerant, and emits the vapor-phase refrigerant toward a suction side of a compressor. The desiccant is disposed in the tank and removing a water content from the refrigerant. Liquid-phase refrigerant included in the refrigerant flowing to the tank drops downward from a location that is located above the desiccant, and is stored in a lower portion in the tank. Vapor-phase refrigerant included in the refrigerant flowing to the tank is drawn through a suction port that is located above the desiccant to flow out of the tank. At least a part of the desiccant is exposed to vapor-phase refrigerant under a normal condition, and the desiccant is located at a location that is away from a dropping route of liquid-phase refrigerant in the tank.Type: ApplicationFiled: August 2, 2013Publication date: August 20, 2015Applicant: DENSO CORPORATIONInventors: Kurato Yamasaki, Teruyuki Hotta, Kazuhisa Makida, Hajime Itoh
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Patent number: 9073772Abstract: A conduit structure for molten glass, in which molten glass is flown through a double-pipe structure, with little stress loading even for a long time operation. A supporting rib connecting an inner pipe and an outer pipe is employed in the double pipe structure having the inner pipe and outer pipe in the conduit structure for molten glass, wherein excessive stress concentration hardly occurs in an inner pipe-joint portion, an outer pipe-joint portion and the rib when the rib is applied with a stress load due to the weight of the inner pipe.Type: GrantFiled: February 4, 2013Date of Patent: July 7, 2015Assignee: Asahi Glass Company, LimitedInventors: Takahiro Nagata, Wataru Miyoshi, Hajime Itoh, Hiroaki Hamamoto, Michito Sasaki
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Patent number: 8997526Abstract: A vacuum degassing apparatus for molten glass is comprised of an uprising pipe, a vacuum degassing vessel, a downfalling pipe, an upstream side pit that supplies molten glass to the uprising pipe, and a downstream side pit that receives molten glass from the downfalling pipe. The vacuum degassing apparatus for molten glass is further comprised of a separating mechanism that separates a part of molten glass moving from the downfalling pipe to the downstream side pit, and a returning pipe that returns separated molten glass to the upstream side pit.Type: GrantFiled: April 26, 2013Date of Patent: April 7, 2015Assignee: Asahi Glass Company, LimitedInventors: Toru Nishikawa, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Patent number: 8720229Abstract: A vacuum degassing apparatus having a throughput of at least 200 tons/day without causing problems such as a stagnation of molten glass flow in the molten glass flow path, an increment of flow rate of the molten glass flow in a local area, an excessive increment of pressure loss of the molten glass flow. A vacuum degassing apparatus comprises a vacuum degassing vessel, and an uprising pipe and a downfalling pipe which are connected with the vacuum degassing vessel, wherein the vacuum degassing vessel includes a wide portion for providing a molten glass flow path, and in the wide portion, the proportion W1/L1 of the breadth of molten glass flow path W1 to the length of molten glass flow path L1 is at least 0.Type: GrantFiled: October 1, 2010Date of Patent: May 13, 2014Assignee: Asahi Glass Company, LimitedInventors: Rei Kitamura, Hironobu Yamamichi, Hiroaki Hamamoto, Hajime Itoh, Housaku Yonetsu
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Publication number: 20130233023Abstract: A vacuum degassing apparatus for molten glass is comprised of an uprising pipe, a vacuum degassing vessel, a downfalling pipe, an upstream side pit that supplies molten glass to the uprising pipe, and a downstream side pit that receives molten glass from the downfalling pipe. The vacuum degassing apparatus for molten glass is further comprised of a separating mechanism that separates a part of molten glass moving from the downfalling pipe to the downstream side pit, and a returning pipe that returns separated molten glass to the upstream side pit.Type: ApplicationFiled: April 26, 2013Publication date: September 12, 2013Applicant: Asahi Glass Company, LimitedInventors: Toru Nishikawa, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Patent number: 8468851Abstract: A vacuum degassing apparatus for molten glass is comprised of an uprising pipe, a vacuum degassing vessel, a downfalling pipe, an upstream side pit that supplies molten glass to the uprising pipe, and a downstream side pit that receives molten glass from the downfalling pipe. The vacuum degassing apparatus for molten glass is further comprised of a separating mechanism that separates a part of molten glass moving from the downfalling pipe to the downstream side pit, and a returning pipe that returns separated molten glass to the upstream side pit.Type: GrantFiled: August 31, 2012Date of Patent: June 25, 2013Assignee: Asahi Glass Company, LimitedInventors: Toru Nishikawa, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Patent number: 8347654Abstract: A vacuum degassing apparatus for molten glass is comprised of an uprising pipe, a vacuum degassing vessel, a downfalling pipe, an upstream side pit that supplies molten glass to the uprising pipe, and a downstream side pit that receives molten glass from the downfalling pipe. The vacuum degassing apparatus for molten glass is further comprised of a separating mechanism that separates a part of molten glass moving from the downfalling pipe to the downstream side pit, and a returning pipe that returns separated molten glass to the upstream side pit.Type: GrantFiled: August 10, 2010Date of Patent: January 8, 2013Assignee: Asahi Glass Company, LimitedInventors: Toru Nishikawa, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Publication number: 20120324957Abstract: A vacuum degassing apparatus for molten glass is comprised of an uprising pipe, a vacuum degassing vessel, a downfalling pipe, an upstream side pit that supplies molten glass to the uprising pipe, and a downstream side pit that receives molten glass from the downfalling pipe. The vacuum degassing apparatus for molten glass is further comprised of a separating mechanism that separates a part of molten glass moving from the downfalling pipe to the downstream side pit, and a returning pipe that returns separated molten glass to the upstream side pit.Type: ApplicationFiled: August 31, 2012Publication date: December 27, 2012Applicant: Asahi Glass Company, LimitedInventors: Toru Nishikawa, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Patent number: 8136373Abstract: A conduit structure for molten glass, a conduit system for molten glass, a vacuum degassing apparatus and a method for vacuum-degassing molten glass by use of the vacuum degassing apparatus, which are capable of effectively removing components eluted from a refractory brick forming a conduit for molten glass, foreign substances generated in the interface between molten glass and a platinum wall surface forming a conduit for molten glass, a bubble remaining in a surface layer of molten glass, a glass material denatured by volatilization, and the like, are provided.Type: GrantFiled: February 26, 2009Date of Patent: March 20, 2012Assignee: Asahi Glass Company, LimitedInventors: Michito Sasaki, Motoichi Iga, Hajime Itoh, Kazuhiko Yamada, Masahiro Saitou
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Patent number: 8019206Abstract: A hollow tubular body for molten glass by which local-overheating in the electrode for conduction heating is prevented. A hollow tubular body for molten glass by which local-overheating in the electrode for conduction heating is prevented. A hollow tubular body having a platinum or platinum alloy hollow tube, used for conduction heating is characterized in that a ring electrode is joined to the outer circumference of the hollow tube, at least one lead-out electrode is joined to an outer edge of the ring electrode, and the ring electrode comprises a core portion of electrode of platinum or platinum alloy and a thick portion of platinum or platinum alloy or of a metallic material other than platinum or platinum alloy, provided at an outer side of the core portion of electrode.Type: GrantFiled: November 30, 2007Date of Patent: September 13, 2011Assignee: Asahi Glass Company, LimitedInventors: Yasuharu Hirabara, Hajime Itoh
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Patent number: 8009970Abstract: There is provided a method for electrically energizing and heating a platinum or platinum-alloy composite tube structure having a structure including a first main tube, a second main tube, and a branch tube connecting the first main tube and the second main tube, which prevents a local part of the branch tube from being electrically energized and heated in an excessive or insufficient manner.Type: GrantFiled: November 16, 2007Date of Patent: August 30, 2011Assignee: Asahi Glass Company, LimitedInventors: Sei Nagano, Yasuharu Hirabara, Hajime Itoh
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Publication number: 20110167850Abstract: In a refrigerant cycle device for a vehicle air conditioner, a refrigerant flow switching device is configured to switch one of a cooling mode, a first heating mode and a second heating mode. In the first heating mode, refrigerant discharged from a compressor flows through a radiator, a heating decompression device and an exterior heat exchanger in this order, and the refrigerant flowing out of the exterior heat exchanger is introduced to a refrigerant suction side of the compressor while bypassing an evaporator. In contrast, in the second heating mode, the refrigerant discharged from the compressor flows into the radiator, and the refrigerant flowing out of the radiator is introduced to the refrigerant suction side of the compressor while bypassing both the exterior heat exchanger and the evaporator, so that the refrigerant radiates heat at the radiator.Type: ApplicationFiled: January 10, 2011Publication date: July 14, 2011Applicant: DENSO CORPORATIONInventors: Satoshi Itoh, Hajime Itoh
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Patent number: 7941038Abstract: A hollow tubular body for molten glass in which local-overheating is reduced at the time of conduction heating. The hollow tubular body has a platinum or platinum alloy hollow tube, used for conduction heating, wherein a platinum or platinum alloy ring electrode is joined to the outer circumference of the hollow tube, a lead-out electrode is joined to an outer edge of the ring electrode, and a thick portion is provided in at least the joint portion closest to the lead-out electrode, of the ring electrode and in the vicinity thereof.Type: GrantFiled: November 30, 2007Date of Patent: May 10, 2011Assignee: Asahi Glass Company, LimitedInventors: Hajime Itoh, Sei Nagano, Yasuharu Hirabara
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Publication number: 20110016922Abstract: A vacuum degassing apparatus having a throughput of at least 200 tons/day without causing problems such as a stagnation of molten glass flow in the molten glass flow path, an increment of flow rate of the molten glass flow in a local area, an excessive increment of pressure loss of the molten glass flow. A vacuum degassing apparatus comprises a vacuum degassing vessel, and an uprising pipe and a downfalling pipe which are connected with the vacuum degassing vessel, wherein the vacuum degassing vessel includes a wide portion for providing a molten glass flow path, and in the wide portion, the proportion W1/L1 of the breadth of molten glass flow path W1 to the length of molten glass flow path L1 is at least 0.Type: ApplicationFiled: October 1, 2010Publication date: January 27, 2011Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Rei KITAMURA, Hironubu YAMAMICHI, Hiroaki HAMAMOTO, Hajime ITOH, Housaku YONETSU
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Publication number: 20100319403Abstract: The present invention provides a vacuum degassing apparatus and a vacuum degassing method for molten glass, which can suppress generation of bubbles on an interface between molten glass and a wall face of a conduit for molten glass such as a vacuum degassing vessel, an uprising pipe or a downfalling pipe that constitute a vacuum degassing apparatus, or influence of lowering of vacuum degassing effect due to rise of the level of molten glass in the vacuum degassing vessel, and which can stably exhibit the effect of vacuum degassing.Type: ApplicationFiled: August 10, 2010Publication date: December 23, 2010Applicant: Asahi Glass Company, LimitedInventors: Toru NISHIKAWA, Hironobu Yamamichi, Tetsuya Koyama, Yuji Endo, Hajime Itoh
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Publication number: 20100251772Abstract: The present invention is to provide a molten glass producing apparatus realizing simultaneously the production of a glass article of high quality and save-energy in producing molten glass, a molten glass producing method employing the molten glass producing apparatus and a method for producing a glass article. In the molten glass producing apparatus having a vacuum degassing apparatus, the melting tank is provided with a separating means for separating the area for circulating the molten glass in the melting tank into an upstream circulation flow and a downstream circulation flow, the distance from the separating means to the downstream end of the molten glass flow path in the melting tank is from 0.1 LE to 0.Type: ApplicationFiled: June 22, 2010Publication date: October 7, 2010Applicant: ASAHI GLASS COMPANY, LIMITEDInventors: Hajime Itoh, Hironobu Yamamichi, Toru Nishikawa, Kazuo Ninomiya, Hiroaki Hamamoto
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Patent number: 7650764Abstract: A vacuum degassing apparatus for molten glass includes a vacuum housing which is evacuated to be depressurized therein; a vacuum degassing vessel which is provided in the vacuum housing to vacuum-degas molten glass as the molten glass flows therein; an uprising pipe which connects to the vacuum degassing vessel, and sucks and draws up undegassed molten glass to introduce the undegassed molten glass into the vacuum degassing vessel; and a downfalling pipe which connects to the vacuum degassing vessel and draws down the degassed molten glass from the vacuum degassing vessel to discharge the degassed molten glass. The cross sectional area of the path at the upper end portion of the uprising pipe is larger than the cross sectional area of the path at the lower end portion of the uprising pipe.Type: GrantFiled: March 23, 2005Date of Patent: January 26, 2010Assignee: Asahi Glass Company, LimitedInventors: Mitsuyoshi Sakai, Michito Sasaki, Hajime Itoh, Rei Kitamura, Atsushi Tanigaki
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Publication number: 20090165501Abstract: A conduit structure for molten glass, a conduit system for molten glass, a vacuum degassing apparatus and a method for vacuum-degassing molten glass by use of the vacuum degassing apparatus, which are capable of effectively removing components eluted from a refractory brick forming a conduit for molten glass, foreign substances generated in the interface between molten glass and a platinum wall surface forming a conduit for molten glass, a bubble remaining in a surface layer of molten glass, a glass material denatured by volatilization, and the like, are provided.Type: ApplicationFiled: February 26, 2009Publication date: July 2, 2009Applicant: ASAHI GLASS CO., LTD.Inventors: Michito Sasaki, Motoichi Iga, Hajime Itoh, Kazuhiko Yamada, Masahiro Saitou
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Publication number: 20090000335Abstract: To provide a glass production process capable of reducing bubbles remaining in glass after production, substantially without a refiner. A glass production process, characterized in that glass to be produced is soda lime glass containing water, and the process comprises a step of subjecting molten glass to reduced pressure defoaming in an atmosphere under a pressure of at most the bubble growth starting pressure Peq (kPa) represented by the following formula (1): Peq=?80.8+98.2×[?-OH]+68.0×[SO3]+0.0617×T??(1) wherein [?-OH] is the ?-OH value (mm?1) of glass, [SO3] is the content (as represented by mass percentage based on oxides) of SO3 in glass, and T is the temperature (° C.) of the molten glass.Type: ApplicationFiled: August 26, 2008Publication date: January 1, 2009Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Shingo Urata, Shuichi Akada, Hosaku Yonetsu, Hajime Itoh