Patents by Inventor Ryuji Akiyama
Ryuji Akiyama 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: 11934009Abstract: A reinforcing sleeve for collectively reinforcing spliced portions of a plurality of optical fiber core wires disposed side by side includes a heat-shrinkable tube, a heat-meltable member, a tension member, and so on. The tension member and the heat-meltable member are inserted into the heat-shrinkable member. A thick portion is provided at a substantially center portion of a width direction of the heat-meltable member. Thus, on a cross section perpendicular to a longitudinal direction of the heat-meltable member, an amount of the heat-meltable member at proximity of the center portion of the width direction of the heat-meltable member is greater than an amount of the heat-meltable member at proximity of the end portions of the width direction of the heat-meltable member. This forms a flow of the heat-meltable member from the center portion toward the end portions in the width direction at the time of melting the heat-meltable member.Type: GrantFiled: January 19, 2022Date of Patent: March 19, 2024Assignee: FURUKAWA ELECTRIC CO., LTD.Inventors: Tomohiro Akiyama, Ryuji Takaoka, Akio Tanabe
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Patent number: 8454734Abstract: The present invention relates to a charging device having a charge section (20) for charging a floating particle in an air to be handled, and an air handling device (an air cleaning device) having the charging device. The charge section (20) is constituted by a first charge section (20a) adopting an impact charging technique and a second charge section (20b) adopting a diffusion charging technique. With this structure, charging and collection of dust can be accomplished only in the casing of the device, and therefore, an increase in size of the device can be avoided.Type: GrantFiled: October 8, 2008Date of Patent: June 4, 2013Assignee: Daikin Industries, Ltd.Inventors: Shunji Haruna, Toshio Tanaka, Kanji Motegi, Ryuji Akiyama
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Patent number: 8454733Abstract: An air handling device (10) includes an air flow path (13) in which a charge section (20) for charging dust in an air to be handled, and a precipitator (30) for collecting the charged dust are placed. The charge section (20) includes a discharge electrode (25) and a counter electrode (26) to perform diffusion charging. A diffusion space (13a) is provided at a location between the charge section (20) and the precipitator (30).Type: GrantFiled: October 8, 2008Date of Patent: June 4, 2013Assignee: Daikin Industries, Ltd.Inventors: Toshio Tanaka, Shunji Haruna, Kanji Motegi, Ryuji Akiyama
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Patent number: 8192535Abstract: A dust collector includes a charging part (12) for charging dust with electricity and a dust collecting part (30). Each of a dust collecting electrode (40) and a high-voltage electrode (50) that constitute the dust collecting part (30) includes: a base (41, 51) with a rectangular grid structure having a large number of vent holes (46, 56) formed therein; and projections (42, 52) extending into the vent holes (56, 46) of the opposed electrode (50, 40). The dust collector collects dust by generating an electric field between the dust collecting electrode (40) and the high-voltage electrode (50).Type: GrantFiled: June 15, 2007Date of Patent: June 5, 2012Assignee: Daikin Industries, Ltd.Inventors: Toshio Tanaka, Kanji Motegi, Ryuji Akiyama, Tsunahiro Odo, Shunji Haruna
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Patent number: 8192536Abstract: A dust collector includes a charging part (12) for charging dust with electricity and a dust collecting part (30). Each of a dust collecting electrode (40) and a high-voltage electrode (50) that constitute the dust collecting part (30) includes: a base (41, 51) with a rectangular grid structure having a large number of vent holes (46, 56) formed therein; and projections (42, 52) extending into the vent holes (56, 46) of the opposed electrode (50, 40). The dust collector collects dust by generating an electric field between the dust collecting electrode (40) and the high-voltage electrode (50).Type: GrantFiled: June 15, 2007Date of Patent: June 5, 2012Assignee: Daikin Industries, Ltd.Inventors: Toshio Tanaka, Kanji Motegi, Ryuji Akiyama, Tsunahiro Odo, Shunji Haruna
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Publication number: 20100251894Abstract: An air handling device (10) includes an air flow path (13) in which a charge section (20) for charging dust in an air to be handled, and a precipitator (30) for collecting the charged dust are placed. The charge section (20) includes a discharge electrode (25) and a counter electrode (26) to perform diffusion charging. A diffusion space (13a) is provided at a location between the charge section (20) and the precipitator (30).Type: ApplicationFiled: October 8, 2008Publication date: October 7, 2010Inventors: Toshio Tanaka, Shunji Haruna, Kanji Motegi, Ryuji Akiyama
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Patent number: 7753994Abstract: In a discharge device for performing streamer discharge between a discharge electrode (41) including a plurality of discharge parts (61) and a counter electrode (42) including a plurality of counter parts (62) confronting the discharge parts (61), a resistor (60) is provided in a current carrying path between power source means (45) and the discharge parts (61).Type: GrantFiled: January 12, 2005Date of Patent: July 13, 2010Assignee: Daikin Industries, Ltd.Inventors: Kanji Motegi, Kenkichi Kagawa, Toshio Tanaka, Ryuji Akiyama
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Patent number: 7722707Abstract: A discharge unit (30) and a heat exchanger (20) are disposed in an air passageway (15). In the discharge unit (30), a rod-like discharge electrode (31) and a plate-like counter electrode (32) are disposed perpendicular to the flow of air, and lie along the heat exchanger (20). Upon application of voltage to both the electrodes (31, 32), streamer discharge is performed between the electrodes (31, 32), whereby an active species capable of decomposition of a component to be processed is produced.Type: GrantFiled: February 20, 2006Date of Patent: May 25, 2010Assignee: Daikin Industries, Ltd.Inventors: Toshio Tanaka, Kenkichi Kagawa, Kanji Motegi, Ryuji Akiyama
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Publication number: 20090277332Abstract: A dust collector includes a charging part (12) for charging dust with electricity and a dust collecting part (30). Each of a dust collecting electrode (40) and a high-voltage electrode (50) that constitute the dust collecting part (30) includes: a base (41, 51) with a rectangular grid structure having a large number of vent holes (46, 56) formed therein; and projections (42, 52) extending into the vent holes (56, 46) of the opposed electrode (50, 40). The dust collector collects dust by generating an electric field between the dust collecting electrode (40) and the high-voltage electrode (50).Type: ApplicationFiled: June 15, 2007Publication date: November 12, 2009Inventors: Toshio Tanaka, Kanji Motegi, Ryuji Akiyama, Tsunahiro Odo, Shunji Haruna
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Publication number: 20090263293Abstract: There is provided a granular particulate ejector configured to eject granular particulates (a liquid droplet ejector (24) configured to spray liquid droplets (22)). Granular particulates (liquid droplets (22)) ejected towards a discharge electrode (21) from the granular particulate ejector (the liquid droplet ejector (24)) serve as a counter electrode (22).Type: ApplicationFiled: May 9, 2007Publication date: October 22, 2009Inventors: Kanji Motegi, Tsunahiro Odo, Toshio Tanaka, Ryuji Akiyama
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Publication number: 20090241579Abstract: In a liquid treatment apparatus, a discharge electrode (31) and an ejector (32) are arranged face to face with each other. An electric power supply (33) establishes an electric potential difference between the discharge electrode (31) and the ejector (32). As a result, a streamer discharge occurs from the discharge electrode (31) towards liquid droplets (32a) emitted from the ejector (32). Active species produced in association with the generation of the streamer discharge are absorbed in the liquid droplets (32a), whereby the treatment target water (32a) is sterilized and purified.Type: ApplicationFiled: June 14, 2007Publication date: October 1, 2009Inventors: Kanji Motegi, Tsunahiro Odo, Toshio Tanaka, Ryuji Akiyama
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Publication number: 20090199718Abstract: A dust collector includes a charging part (12) for charging dust with electricity and a dust collecting part (30). Each of a dust collecting electrode (40) and a high-voltage electrode (50) that constitute the dust collecting part (30) includes: a base (41, 51) with a rectangular grid structure having a large number of vent holes (46, 56) formed therein; and projections (42, 52) extending into the vent holes (56, 46) of the opposed electrode (50, 40). The dust collector collects dust by generating an electric field between the dust collecting electrode (40) and the high-voltage electrode (50).Type: ApplicationFiled: June 15, 2007Publication date: August 13, 2009Inventors: Toshio Tanaka, Kanjil Motegi, Ryuji Akiyama, Tsunahiro Odo, Shunji Haruna
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Publication number: 20090193976Abstract: In a discharge device for performing streamer discharge between a discharge electrode (41) including a plurality of discharge parts (61) and a counter electrode (42) including a plurality of counter parts (62) confronting the discharge parts (61), a resistor (60) is provided in a current carrying path between power source means (45) and the discharge parts (61).Type: ApplicationFiled: January 12, 2005Publication date: August 6, 2009Inventors: Kanji Motegi, Kenkichi Kagawa, Toshio Tanaka, Ryuji Akiyama
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Publication number: 20090120781Abstract: Disclosed is an air purification device including a discharge part for discharging electricity in air. Low-profiling of the air purification device is accomplished while maintaining the discharge capability of the discharge part. In an ionization part (30) for electrically charging airborne dust particles, an insulating medium (60) is disposed between an ionization wire (31) serving as a discharge base end and an earth electrode (33). As a result of such arrangement, electrical discharge from the ionization wire (31) to the earth electrode (33) is obstructed while on the other hand corona discharge from the ionization wire (31) to a first electrode plate (32) is maintained, whereby the distance between the ionization wire (31) and the earth electrode (33) can be made narrow.Type: ApplicationFiled: January 26, 2006Publication date: May 14, 2009Inventors: Kanji Motegi, Ryuji Akiyama, Toshio Tanaka, Kenkichi Kagawa
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Publication number: 20080120989Abstract: A discharge unit (30) and a heat exchanger (20) are disposed in an air passageway (15). In the discharge unit (30), a rod-like discharge electrode (31) and a plate-like counter electrode (32) are disposed perpendicular to the flow of air, and lie along the heat exchanger (20). Upon application of voltage to both the electrodes (31, 32), streamer discharge is performed between the electrodes (31, 32), whereby an active species capable of decomposition of a component to be processed is produced.Type: ApplicationFiled: February 20, 2006Publication date: May 29, 2008Inventors: Toshio Tanaka, Kenkichi Kagawa, Kanji Motegi, Ryuji Akiyama