Patents by Inventor Naoki Kawai
Naoki Kawai 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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Publication number: 20240080980Abstract: Uneven distribution of current is suppressed even in a condition that semiconductor elements are mounted in a limited area on a circuit board. A power supply device includes a secondary battery cell, charging/discharging FETs, and a circuit board including a first terminal block and a second terminal block. A first charging/discharging FET and a third charging/discharging FET are disposed at a side of the first terminal block on circuit board. A second charging/discharging FET and a fourth charging/discharging FET are disposed at a side of the second terminal block on circuit board. A first current path connecting the first charging/discharging FET in series to the second charging/discharging FET is longer than a second current path connecting the third charging/discharging FET in series to the fourth charging/discharging FET. The first current path includes a first current impeding region configured to impede current flow.Type: ApplicationFiled: January 20, 2022Publication date: March 7, 2024Inventors: NAOKI KAWAI, TAKAHIRO YAMASHITA
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Publication number: 20240079749Abstract: Erroneous fuse-blowout during assembling is avoided, thereby improving workability. A power supply device includes a battery unit and a circuit unit electrically connected to the battery unit for controlling charging and discharging. The battery unit includes a series connection including secondary battery cells connected at least in series to one another, a battery-side ground on a low-voltage side of the series connection, and a battery-side output on a high-voltage side of the series connection. The circuit unit includes an overvoltage-detecting fuse configured to detect an overvoltage and to blow upon detecting the overvoltage.Type: ApplicationFiled: January 20, 2022Publication date: March 7, 2024Inventors: NAOKI KAWAI, TAKAHIRO YAMASHITA
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Publication number: 20240072398Abstract: Unintentional damage of a power supply device during assembling of the device is avoided to increase workability of the assembling. The power supply device includes secondary battery cells each including an electrode terminal, a battery holder holding the cells, and a circuit board including a control circuit mounted thereon and electrically connected to the cells to control charging and discharging. A method of manufacturing the device includes connecting, to a board-side ground terminal disposed on the board, a battery-side ground terminal drawn outside from the holder as a ground of a total output of the cells electrically connected in series and/or parallel, mounting the board on a surface of the holder, and connecting, to respective one or more board-side intermediate terminals disposed on the board, one or more battery-side intermediate terminals disposed on the holder being electrically connected to at least one of the cells.Type: ApplicationFiled: January 20, 2022Publication date: February 29, 2024Inventors: NAOKI KAWAI, TAKAHIRO YAMASHITA, TOMOYUKI ICHIZA
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Patent number: 11303141Abstract: A protection circuit for a battery includes a discharge FET, a control circuit, a first small-signal FET, and a second small-signal FET. The discharge FET connected in series to a battery interrupts an electric current. The control circuit switches on or off the discharge FET. The first small-signal FET connected in parallel between a gate (G) and a source (S) of the discharge FET is switched to an ON state, to set a gate voltage of the discharge FET to an OFF-state voltage. The second small-signal FET connected in parallel between G and S of the discharge FET detects a voltage between a drain (D) and S of the discharge FET. When the voltage between D and S of the discharge FET exceeds a preset voltage, the second small-signal FET is switched to an ON state to set the gate voltage of the discharge FET to the OFF-state voltage.Type: GrantFiled: July 12, 2018Date of Patent: April 12, 2022Assignee: SANYO Electric Co., Ltd.Inventors: Tetsuya Kawasaki, Hisashi Kameyama, Naoki Kawai, Takahiro Yamashita
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Publication number: 20200235591Abstract: A protection circuit for a battery includes a discharge FET, a control circuit, a first small-signal FET, and a second small-signal FET. The discharge FET connected in series to a battery interrupts an electric current. The control circuit switches on or off the discharge FET. The first small-signal FET connected in parallel between a gate (G) and a source (S) of the discharge FET is switched to an ON state, to set a gate voltage of the discharge FET to an OFF-state voltage. The second small-signal FET connected in parallel between G and S of the discharge FET detects a voltage between a drain (D) and S of the discharge FET. When the voltage between D and S of the discharge FET exceeds a preset voltage, the second small-signal FET is switched to an ON state to set the gate voltage of the discharge FET to the OFF-state voltage.Type: ApplicationFiled: July 12, 2018Publication date: July 23, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Tetsuya Kawasaki, Hisashi Kameyama, Naoki Kawai, Takahiro Yamashita
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Publication number: 20190277439Abstract: Disclosed is a coated metal pipe including a metal pipe and a multi-layered coating film that covers an outer circumferential surface of the metal pipe. The multi-layered coating film includes a chemical conversion layer and a primer layer, and these layers are provided in this order from the inside. The primer layer contains polyamide imide and at least one kind of additive component selected from polyamide, a fluorine resin, a silane coupling agent, and an epoxy resin.Type: ApplicationFiled: May 24, 2019Publication date: September 12, 2019Inventors: Naoki KAWAI, Takanori KON, Norinobu KUSUNOKI, Akira SUGITANI
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Patent number: 10337660Abstract: Disclosed is a coated metal pipe including a metal pipe and a multi-layered coating film that covers an outer circumferential surface of the metal pipe. The multi-layered coating film includes a chemical conversion layer and a primer layer, and these layers are provided in this order from the inside. The primer layer contains polyamide imide and at least one kind of additive component selected from polyamide, a fluorine resin, a silane coupling agent, and an epoxy resin.Type: GrantFiled: October 13, 2015Date of Patent: July 2, 2019Assignee: SANOH INDUSTRIAL CO., LTD.Inventors: Naoki Kawai, Takanori Kon, Norinobu Kusunoki, Akira Sugitani
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Patent number: 10281078Abstract: Disclosed is a coated metal pipe including a metal pipe and a multi-layered coating film that covers an outer circumferential surface of the metal pipe. The multi-layered coating film includes a chemical conversion layer and a primer layer, and these layers are provided in this order from the inside. The chemical conversion layer contains a zirconium oxide and/or a zirconium hydroxide. The primer layer contains a polyamide imide and/or an epoxy resin.Type: GrantFiled: February 10, 2016Date of Patent: May 7, 2019Assignee: SANOH INDUSTRIAL CO., LTD.Inventors: Naoki Kawai, Takanori Kon, Norinobu Kusunoki, Akira Sugitani
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Publication number: 20180119871Abstract: Disclosed is a coated metal pipe including a metal pipe and a multi-layered coating film that covers an outer circumferential surface of the metal pipe. The multi-layered coating film includes a chemical conversion layer and a primer layer, and these layers are provided in this order from the inside. The primer layer contains polyamide imide and at least one kind of additive component selected from polyamide, a fluorine resin, a silane coupling agent, and an epoxy resin.Type: ApplicationFiled: October 13, 2015Publication date: May 3, 2018Inventors: Naoki KAWAI, Takanori KON, Norinobu KUSUNOKI, Akira SUGITANI
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Publication number: 20180045357Abstract: Disclosed is a coated metal pipe including a metal pipe and a multi-layered coating film that covers an outer circumferential surface of the metal pipe. The multi-layered coating film includes a chemical conversion layer and a primer layer, and these layers are provided in this order from the inside. The chemical conversion layer contains a zirconium oxide and/or a zirconium hydroxide. The primer layer contains a polyamide imide and/or an epoxy resin.Type: ApplicationFiled: February 10, 2016Publication date: February 15, 2018Inventors: Naoki KAWAI, Takanori KON, Norinobu KUSUNOKI, Akira SUGITANI
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Publication number: 20170130874Abstract: To provide a resin-coated metal pipe which is excellent in corrosion resistance and impact resistance, wherein adhesion between a plating layer and a resin coating layer is good even without a primer layer, and whereby the number of steps at the time of production is small, and the environmental burden is low. A resin-coated metal pipe (10) comprises a metal pipe (12), a plating layer (14) formed by hot dipping plating on the outer peripheral surface of the metal pipe (12), and a resin coating layer (16) formed by melt molding on the surface of the plating layer (14), wherein the resin coating layer (16) is made of a resin material comprising a melt-moldable fluororesin (A) having at least one type of reactive functional group selected from the group consisting of a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group.Type: ApplicationFiled: January 13, 2017Publication date: May 11, 2017Applicants: Asahi Glass Company, Limited, Sanoh Industrial Co., Ltd.Inventors: Ryoji Watanabe, Eiichi Nishi, Toru Sasaki, Tomoya Hosoda, Naoki Kawai, Takahiro Gunji
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Patent number: 8999517Abstract: A steel pipe has a multi-layer coating including: a plating film formed on the surface of the steel pipe; a chemical conversion coating covering the plating film; a primer coating covering the chemical conversion coating and formed from a curable epoxy resin composition composed mainly of an epoxy compound and having an amide or imide bond introduced; and a polyamide resin coating covering the primer coating. The multi-layer coating can significantly enhance the adhesion force of the polyamide coating compared to the conventional pipe.Type: GrantFiled: November 20, 2008Date of Patent: April 7, 2015Assignee: Sanoh Kogyo Kabushiki KaishaInventors: Yoshihisa Tamura, Naoki Kawai
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Publication number: 20140267589Abstract: An omnidirectional image storage unit stores frames of panoramic image shot while moving on the route, a route information storage unit stores route information indicating nodes and branches on the route, and a correspondence information storage unit stores correspondence between each frame and each point on the route. A data updating unit successively updates a current position and a sight direction based on a user's input. An image cutout unit reads out a panoramic image corresponding to a current position and cuts out a field of view image that constructs a field of vision in a sight direction. A route mapping unit creates a route map indicating a current position and a sight direction superimposed upon a plan view of the route. An image display unit displays the field of view image and the route map side by side.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: DAI NIPPON PRINTING CO., LTD.Inventors: Takahiro MATSUBARA, Naoki Kawai
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Patent number: 8338747Abstract: The present invention provides a method of removing a coated resin layer of a resin-coated metal tube whereby a resin layer can be stripped rapidly without the risk of damaging a plating layer. In a method of removing a coating resin layer of a resin-coated metal tube according to the present invention, a coating resin layer is removed by a rotating body of a rotating body stripping apparatus, whereupon the coating resin layer is removed by a laser beam of a laser apparatus.Type: GrantFiled: November 24, 2009Date of Patent: December 25, 2012Assignee: Sanoh Industrial Co., Ltd.Inventors: Takanori Kon, Yoshihide Tabayashi, Kazunori Takano, Takaaki Motohashi, Toshio Oshima, Naoki Kawai, Yuji Motohashi
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Publication number: 20100247947Abstract: A steel pipe has a multi-layer coating including: a plating film formed on the surface of the steel pipe; a chemical conversion coating covering the plating film; a primer coating covering the chemical conversion coating and formed from a curable epoxy resin composition composed mainly of an epoxy compound and having an amide or imide bond introduced; and a polyamide resin coating covering the primer coating. The multi-layer coating can significantly enhance the adhesion force of the polyamide coating compared to the conventional pipe.Type: ApplicationFiled: November 20, 2008Publication date: September 30, 2010Applicant: SANOH KOGYO KABUSHIKI KAISHAInventors: Yoshihisa Tamura, Naoki Kawai
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Publication number: 20100126972Abstract: The present invention provides a method of removing a coated resin layer of a resin-coated metal tube whereby a resin layer can be stripped rapidly without the risk of damaging a plating layer. In a method of removing a coating resin layer of a resin-coated metal tube according to the present invention, a coating resin layer is removed by a rotating body of a rotating body stripping apparatus, whereupon the coating resin layer is removed by a laser beam of a laser apparatus.Type: ApplicationFiled: November 24, 2009Publication date: May 27, 2010Inventors: Takanori Kon, Yoshihide Tabayashi, Kazunori Takano, Takaaki Motohashi, Toshio Oshima, Naoki Kawai, Yuji Motohashi
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Publication number: 20040008277Abstract: A caption extraction device is provided that is able to provide caption information itself embedded in video contents, and use this caption information to support the activities of physically challenged persons and so forth. A caption extraction device that extracts caption information from video signals is provided with a caption extraction unit which extracts superimposed captions from video signals actually broadcast or played back, a character recognition unit which recognizes character strings contained in the superimposed captions which have been extracted on a real-time basis, and outputs character information containing character codes corresponding to the recognized character strings, and a display unit which displays the character strings contained in the superimposed captions based on the character information.Type: ApplicationFiled: May 13, 2003Publication date: January 15, 2004Inventors: Michihiro Nagaishi, Mitsuho Yamada, Tadahiro Sakai, Toshihiro Shimizu, Naoki Kawai
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Patent number: 5852278Abstract: An arc welding and arc plasma cutting machine having a dc high-voltage generator is provided. The dc high-voltage generator includes a first dc power source, a second dc power source, an one-way rectifier, and a voltage clamping circuit. The first dc power source applies a dc voltage through the one-way rectifier across an electrode and a work piece. The second dc power source is connected across the first dc power source and superimposes a dc voltage on the power produced by the first dc power source for developing an arc discharge across the electrode and the work piece. The voltage clamping circuit connected in parallel to the one-way rectifier to restrict a high-voltage applied to the one-way rectifier below a given level for protecting the one-way rectifier from breakage due to application of the high-voltage.Type: GrantFiled: December 27, 1996Date of Patent: December 22, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yoshiaki Tanaka, Seigo Hagiwara, Norikazu Osaki, Kazuo Kimoto, Naoki Kawai
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Patent number: 5792545Abstract: On a surface of a decorative paper, vessel perforation of natural wood is reproduced by an offset groove (100) consisting of three steps of embossing grooves (110, 120, 130) of the nesting structure. Respective grooves are such that they are deeper according as positions thereof shift to the internal, and are disposed in a manner to be eccentric in a length direction. Within the groove, a convex bank portion (140) in which the bottom surface is linearly protruded is formed. An embossing plate for processing such an offset groove is prepared on the basis of a vessel cross section pattern inputted by using natural wood. The inputted plane vessel cross section pattern is replaced by an approximate elliptical figure. A three-dimensional virtual vessel perforation model is determined by calculation using the elliptical figure. Equi-depth lines for set predetermined depths are extracted from the three-dimensional model and contour figures of embossing grooves (110, 120, 130) are obtained.Type: GrantFiled: November 30, 1995Date of Patent: August 11, 1998Assignee: Dai Nippon Printing Co., Ltd.Inventors: Naoki Kawai, Toshio Modegi, Tsuneo Miyasaka, Yashiro Hayashi, Hideki Murota, Ieharu Hashizume, Toshio Ariyoshi, Masaru Okamoto, Yoshio Sukegawa
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Patent number: 5270516Abstract: An arc welding machine comprises an output control circuit which produces an arc output in accordance with output control signal, an output detection circuit which measures the state of arc output and produces a feedback signal indicative of the output arc state, and a fuzzy inference control circuit which introduces the feedback signal, produces a welding current waveform and welding voltage waveform required to produce the optimal arc state based on the fuzzy inference, and delivers the resulting waveforms to the output control circuit as the output control signal.Type: GrantFiled: March 26, 1992Date of Patent: December 14, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Koji Hamamoto, Naoki Kawai, Junzo Tanimoto, Tetsu Innami, Yoshinori Nishida