Patents by Inventor Akira Kawahara
Akira Kawahara 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: 7850796Abstract: An aluminum alloy fin material for brazing, characterized by comprising an aluminum alloy comprising more than 1.4% by mass but not more than 1.8% by mass of Fe, 0.8% by mass or more but 1.0% by mass or less of Si, and more than 0.6% by mass but not more than 0.9% by mass of Mn, with the balance being Al and inevitable impurities, wherein 80% or more of the surface area, as viewed from the surface layer of the fin plane, is occupied by recrystallized grains with a length of 10 mm or more, in a direction rolled.Type: GrantFiled: August 20, 2007Date of Patent: December 14, 2010Assignees: Denso Corporation, Furukawa-Sky Aluminum Corp.Inventors: Kyoji Inukai, Tomohiro Ito, Akira Kawahara, Akio Niikura
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Publication number: 20090053549Abstract: An aluminum alloy fin material for brazing, characterized by comprising an aluminum alloy comprising more than 1.4% by mass but not more than 1.8% by mass of Fe, 0.8% by mass or more but 1.0% by mass or less of Si, and more than 0.6% by mass but not more than 0.9% by mass of Mn, with the balance being Al and inevitable impurities, wherein 80% or more of the surface area, as viewed from the surface layer of the fin plane, is occupied by recrystallized grains with a length of 10 mm or more, in a direction rolled.Type: ApplicationFiled: August 20, 2007Publication date: February 26, 2009Applicants: DENSO CORPORATION, FURUKAWA-SKY ALUMINUM CORP.Inventors: Kyoji Inukai, Tomohiro Ito, Akira Kawahara, Akio Niikura
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Publication number: 20050244906Abstract: On a surface of a well previously disposed on a plate, a primary antibody that recognizes vitellogenin is solid-phased, in the well a sample obtained from a test body exposed to an environment is injected to react, followed by injecting a secondary antibody that is labeled with an enzyme and recognizes the vitellogenin, further followed by injecting a chromogenic reagent to cause a coloring reaction and by measuring the stained amount, still further followed by calculating an amount of vitellogenin from the stained amount to evaluate an environment based on the amount of vitellogenin.Type: ApplicationFiled: June 9, 2003Publication date: November 3, 2005Inventors: Akira Kawahara, Yasuhiro Goda, Naoko Mitsui
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Patent number: 6660108Abstract: A method of producing an aluminum alloy fin material for brazing, which comprises: casting an aluminum alloy by continuous cast-rolling, wherein the alloy comprises above 0.1 wt % to 3 wt % of Ni, above 1.5 wt % to 2.2 wt % of Fe, and 1.2 wt % or less of Si, and at least one of Zn, In, and Sn in given amounts, the balance being unavoidable impurities and aluminum, and cold-rolling in which annealing at 250 to 500° C. is conducted plural times midway in the cold-rolling, thereby producing the fin material of a given thickness; wherein a cast coil with a given thickness is produced by continuous cast-rolling, and wherein the second last annealing is carried out with a given thickness, and wherein the final annealing is carried out under heating conditions that do not allow complete recrystallization.Type: GrantFiled: March 22, 2001Date of Patent: December 9, 2003Assignee: The Furukawa Electric Co., Ltd.Inventors: Takeyoshi Doko, Akira Kawahara
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Patent number: 6620265Abstract: A method for manufacturing an aluminum alloy fin material brazing comprises forming an ingot sheet by casting a molten liquid of an aluminum alloy by a continuous casting rolling method, and cold-rolling the ingot sheet to prepare a fin material. The aluminum alloy contains prescribed amounts of Mn, Fe, and Si, with the balance being Al and inevitable impurities. The continuous cast-rolling is applied under each a prescribed condition of a molten liquid temperature, a roll press load, a casting speed, and a thickness of the ingot sheet. Two or more intermediate annealings are applied midway in the cold-rolling process, with intermediate annealing including final intermediate annealing with a heating furnace in prescribed temperature range, thereby adjusting the prescribed rolling ratio in the cold-rolling, after the final intermediate annealing.Type: GrantFiled: May 20, 2002Date of Patent: September 16, 2003Assignee: The Furukawa Electric Co., Ltd.Inventors: Akira Kawahara, Takeyoshi Doko
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Publication number: 20030015573Abstract: A method for manufacturing an aluminum alloy fin material for brazing, which has the steps of:Type: ApplicationFiled: May 20, 2002Publication date: January 23, 2003Inventors: Akira Kawahara, Takeyoshi Doko
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Patent number: 6471794Abstract: An aluminum alloy fin material for brazing which is composed of an aluminum alloy comprising above 0.1 wt % to 3 wt % of Ni, above 1.5 wt % to 2.2 wt % of Fe, and 1.2 wt % or less of Si, and at least one selected from the group consisting of 4 wt % or less of Zn, 0.3 wt % or less of In, and 0.3 wt % or less of Sn, and further comprising, optionally, at least one selected from the group consisting of co, Cr, Zr, Ti, Cu, Mn, and Mg in given amounts, the balance being unavoidable impurities and aluminum, wherein a ratio of the grain length in the right angle direction/the grain length in the parallel direction is 1/30 or less, an electric conductivity is 50 to 55 %IACS, and a tensile strength is 170 to 280 MPa.Type: GrantFiled: May 18, 2001Date of Patent: October 29, 2002Assignees: The Furukawa Electric Co., Ltd., Denso CorporationInventors: Takeyoshi Doko, Akira Kawahara, Sunao Fukuda, Yoshihiko Kamiya, Masaki Shimizu, Kenji Negura
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Publication number: 20020004977Abstract: A method of producing an aluminum alloy fin material for brazing, which comprises:Type: ApplicationFiled: March 22, 2001Publication date: January 17, 2002Inventors: Takeyoshi Doko, Akira Kawahara
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Publication number: 20020000270Abstract: An aluminum alloy fin material for brazing which is composed of an aluminum alloy comprising above 0.1 wt % to 3 wt % of Ni, above 1.5 wt % to 2.2 wt % of Fe, and 1.2 wt % or less of Si, and at least one selected from the group consisting of 4 wt % or less of Zn, 0.3 wt % or less of In, and 0.3 wt % or less of Sn, and further comprising, optionally, at least one selected from the group consisting of Co, Cr, Zr, Ti, Cu, Mn, and Mg in given amounts, the balance being unavoidable impurities and aluminum, wherein a ratio of the grain length in the right angle direction/the grain length in the parallel direction is 1/30 or less, an electric conductivity is 50 to 55% IACS, and a tensile strength is 170 to 280 MPa.Type: ApplicationFiled: May 18, 2001Publication date: January 3, 2002Inventors: Takeyoshi Doko, Akira Kawahara, Sunao Fukuda, Yoshihiko Kamiya, Masaki Shimizu, Kenji Negura
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Patent number: 5603631Abstract: A plug (2) that includes a plug frame (7) is inserted into an opening of a housing (4) and is retained by a pair of spring-like detent pieces (6) extending into the opening. Projecting portions (6a) on the detent pieces engage recess portions (15) on right and left hand sides of the plug frame. A cylindrical lug (13) is slidably mounted on the plug frame and includes an opening portion (14) and inclined surfaces (17) to permit plug removal. The inclined surfaces (17) serve as cams to lift the projection portions (6a) out of the recess portions (15) when the lug is moved rearwardly. A stopper (3) is insertable into the plug frame to block such rearward sliding motion of the lug on the frame to prevent removal of the plug from the housing. The stopper may include a locking inward projection (3d) for engaging a hole (13b) bored in the lug to block rearward motion of the lug on the plug frame.Type: GrantFiled: April 17, 1995Date of Patent: February 18, 1997Assignees: Hirose Electric Co., Ltd., Honda Tsushin Kogyo Co., Ltd., Sanwa Denki Kogyo Co., Ltd., Nippon Telegraph CorporationInventors: Akira Kawahara, Tatuhito Shinozaki, Shin'ichi Iwano, Kazunori Kanayama, Yasuhiro Ando, Kuniharu Katou, Tateomi Matumoto, Takashi Nishiyama, Toshiaki Nakano, Hiromasa Okamura
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Patent number: 5563978Abstract: The sleeve holder for an optical connector capable of preventing slip-off or disconnecting of the sleeve holder from a housing and eliminating breaking of a split sleeve due to the increase of an insertion force of the ferrule by maintaining always no-load state for engaging pieces. A tube-shaped main body inserted and held in the housing is mounted therein with a slider slidable in an axis direction. A split sleeve inserting and holding the ferrule is mounted at the insides of a tube body and the slider fixedly engaged coaxially with the main body, and such mount of the split sleeve together with the slider is slidable by a predetermined stroke in the axis direction.Type: GrantFiled: June 20, 1994Date of Patent: October 8, 1996Assignees: Sanwa Denki Kogyo Company Limited, Nippon Telegraph and Telphon Corporation, Honda Tsushin Kogyo Company LimitedInventors: Akira Kawahara, Yuji Shinagawa, Shin'ichi Iwano, Kazunori Kanayama, Yasuhiro Ando, Toshiaki Nakano, Hiromasa Okamura
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Patent number: 5554966Abstract: An audio apparatus having a detachable control panel or operating-part main unit includes a microcomputer for detecting an OFF state of an ACC position of the ignition key, or the attached/detached state of the operating-part main unit. When such states are detected, normal operations of the microcomputer; namely, the operations to turn on an SWD V.sub.DD terminal and an A/D port and to set a KEY DATA terminal into a standby mode, are stopped intermittently in order to execute a low consumption process in which electric power is consumed only for holding information in memory in the microcomputer. When the microcomputer detects the OFF state of the ignition key or the OFF state of an installation detection switch and, an alarm ON state is set in the memory in the microcomputer, then an alarm sound is generated from a speaker for a predetermined time.Type: GrantFiled: January 19, 1993Date of Patent: September 10, 1996Assignee: Pioneer Electronic CorporationInventors: Takayuki Iijima, Yoshio Aoyagi, Shigetoshi Kato, Osamu Yoshizawa, Hiroshi Wakimoto, Akira Kawahara, Akio Namiki
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Patent number: 5475516Abstract: A liquid crystal display includes a plurality of pixels arranged in a matrix. The matrix is formed by five rows and three columns. A pixel at a predetermined position is bisected.Type: GrantFiled: September 14, 1993Date of Patent: December 12, 1995Assignee: Pioneer Electronic Corp.Inventors: Osamu Yoshizawa, Yoshio Aoyagi, Hiroshi Wakimoto, Tatsuya Fukuda, Akira Kawahara
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Patent number: 5418875Abstract: An adapter for an optical connector including securing first and second adapter elements which are opposed to each other and a sleeve holder having an alignment sleeve therein, which is sandwiched between said adapter elements, wherein each adapter element has a seat which is in contact with part of the sleeve holder for sandwiching said sleeve therebetween, the sleeve holder has a pair of metallic sleeve holder elements, one of the sleeve holder elements being pressure fitted to the other sleeve holder element so that it will not be moved relative the other sleeve holder element, the sleeve holder has on the periphery thereof in the intermediate position along the length thereof a flange which is complimentary in shape with the seat of each adapter element.Type: GrantFiled: September 1, 1993Date of Patent: May 23, 1995Assignees: Honda Tsushin Kogyo Co., Ltd., Nippon Telegraph & Telephone, Sanwa Denki Kogyo Co., Ltd., Hirose Electric Co., Ltd.Inventors: Toshiaki Nakano, Hiromasa Okamura, Shin-Ichi Iwano, Ryo Nagase, Kazunori Kanayama, Yasuhiro Ando, Akira Kawahara, Toshiaki Furukawa, Tateomi Matumoto, Takashi Nishiyama
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Patent number: 5359230Abstract: An on-vehicle electronic device includes a main body which is fastened to a vehicle and has a first terminal, and an operation unit which is detachably mounted in the main body and which has a second terminal electrically connected to the first terminal when the operation unit is mounted in the main body. The main body includes a reference power source applying a reference voltage to the first terminal, and a voltage detection unit for detecting a voltage applied to the first terminal. The main body further includes a mounting detection unit. The mounting detection unit determines, based on a difference between a first detection voltage detected by the voltage detection unit when the operation unit is mounted and a second detection voltage detected by the voltage detection unit when the operation unit is not mounted, whether or not the operation unit is mounted and electrically connected to the main body via the first and second terminals.Type: GrantFiled: August 17, 1992Date of Patent: October 25, 1994Assignee: Pioneer Electronic CorporationInventors: Akio Namiki, Yoshio Aoyagi, Shigetoshi Kato, Osamu Yoshizawa, Hiroshi Wakimoto, Akira Kawahara, Takayuki Iijima
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Patent number: 5073043Abstract: Means and method for assembling an optical fiber cable with a tubular member that secures an outside protective jacket of the cable. The inside wall of the tubular member is provided with serrations such that when the wall is physically reduced on the protective jacket, the serrations engage and retain the jacket without compressing the inner optical fiber so that it is free to move longitudinally within the jacket. This is accomplished by using a crimping device having a crimping aperture that is sized to precisely control the amount of reduction of the tube wall onto the protective jacket.Type: GrantFiled: September 6, 1990Date of Patent: December 17, 1991Inventors: Brain A. DiMarco, Akira Kawahara, Ryo Nagase
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Patent number: 4751770Abstract: The present invention is drawn to a clasping device for fixing a cargo item such as an automobile on a load carrying platform. The main assembly (A) of the clasping device has a body (B) and lever (C). Body (B) includes a main body (B.sub.1) and a sub-body (B.sub.2). The main body (B.sub.1), the sub-body (B.sub.2) and the lever (C) are pivotally connected to each other by pins (8a, 8b). In the release condition, the main body (B.sub.1) and the sub-body (B.sub.2) are bent and form a V-shape in association with each other due to the tension exerted and remaining on the strap (21).Type: GrantFiled: April 30, 1988Date of Patent: June 21, 1988Assignee: Ryusyo Industrial Co., Ltd.Inventor: Akira Kawahara
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Patent number: 4584741Abstract: A clasping device which has a main assembly including a body, and a lever connected by means of links. A first hook is connected with the body, while a second hook is connected with the lever by means of a strap. The strap can be tightened and loosened by rotating the lever between the release and tightening positions. The body has a claw member for temporarily holding the tightened strap. Therefore, by utilizing the claw member, the lever can be repeatedly operated in order to increasingly tighten the strap.Type: GrantFiled: July 18, 1985Date of Patent: April 29, 1986Assignee: Ryusyo Industrial Co., Ltd.Inventors: Akira Kawahara, Akihiko Chiba
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Patent number: 4573629Abstract: A method of production of a cladding tube for a nuclear fuel element wherein a first hollow billet of a zirconium alloy and a second hollow billet of zirconium having a smaller outer diameter than the first hollow billet are formed by heat treatment, forging and cutting. A resilient member is inserted in a space defined between the first hollow billet and the second hollow billet inserted in the first hollow billet, a pressure oriented axially of the two hollow billets is applied to the resilient member to bring the outer wall surface of the second hollow billet into intimate contact with the inner wall surface of the first hollow billet, and opposite ends of the two hollow billets are joined and sealed. The hollow billets thus joined into a unitary structure are subjected to hot extrusion, cold working and heat treatment to produce a composite tube of reduced diameter and reduced thickness, and the inner and outer wall surfaces of the composite tube are ground.Type: GrantFiled: August 10, 1981Date of Patent: March 4, 1986Assignees: Hitachi, Ltd., Sumitomo Metal Industries, Ltd., Nippon Mining Co., Ltd.Inventors: Hiromichi Imahashi, Akira Kawahara, Takao Konishi, Yoshihumi Morimoto, Michio Terui, Yoshio Yagi
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Patent number: 4527309Abstract: A clasping device for fastening a large cargo which includes a lever pivotally connected to a body through a pair of links. A belt is tightened by pivoting the lever relative to the body in a fastening direction in such a way that the pivotal connection between the links and the lever move in the direction of the interior of the body when the lever is pivoted in a fastening direction, thereby to render the device compact in the fastening position.Type: GrantFiled: February 24, 1983Date of Patent: July 9, 1985Assignee: Ryusyo Industrial Co., Ltd.Inventor: Akira Kawahara