Patents by Inventor Hiroshi Kawai
Hiroshi 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: 20060249073Abstract: The present invention is a method suitable for heat treatment, or a heat treatment method for growing single crystal silicon carbide by a liquid phase epitaxial method, wherein a monocrystal silicon carbide substrate as a seed crystal and a polycrystal silicon carbide substrate are piled up, placed inside a closed container, and subjected to high-temperature heat treatment, by which very thin metallic silicon melt layer is interposed between the monocrystal silicon carbide substrate and the polycrystal silicon carbide substrate during heat treatment, and single crystal silicon carbide is liquid-phase epitaxially grown on the monocrystal silicon carbide substrate. The closed container is in advance heated to a temperature exceeding approximately 800° C.Type: ApplicationFiled: March 10, 2004Publication date: November 9, 2006Applicant: The new industry research organizationInventors: Yasushi Asaoka, Tadaaki Kaneko, Nakatsu Sano, Hiroshi Kawai, Tomohira Iwazaki, Seiji Yamaguchi, Hiroyuki Matsumoto, Toshiyuki Kouno
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Patent number: 7128128Abstract: The invention provides a plunger tip for die casting machines which is excellent in slidability and sealing properties. The plunger tip comprises a tip main body (20) and is slidable inside a plunger sleeve (60) for pushing out a molten metal into a die. The tip main body (20) is made of a metal material and covered over an outer peripheral surface thereof with a slide sleeve (40) made of a rigid resin material exhibiting high slidability and excellent sealing properties on the inner surface of the plunger sleeve.Type: GrantFiled: June 24, 2005Date of Patent: October 31, 2006Assignees: Kubota Corporation, Toyota Jidosha Kabushiki KaishaInventors: Takahiro Kaba, Hiroshi Yamaguchi, Hiroshi Kawai
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Patent number: 7126447Abstract: An RF-MEMS switch includes a plurality of movable electrodes disposed with a space provided therebetween in the direction of RF signal conduction of an RF signal-conducting unit which is provided above the RF signal-conducting unit. A movable electrode displacing unit for displacing all the movable electrodes at the same time in the same direction towards or away from the RF signal-conducting unit is provided. The electrical length of the RF signal-conducting unit sandwiched between the movable electrodes is set such that the amplitude of a combined signal including signals reflected in positions of the RF signal-conducting unit facing the movable electrodes is less than the amplitude of each of reflected signals reflected in positions of the RE signal-conducting unit facing the movable electrodes when the movable electrodes are displaced away from the RF signal-conducting unit and signal conduction of the RF signal-conducting unit is switched on.Type: GrantFiled: November 13, 2003Date of Patent: October 24, 2006Assignee: Murata Manufacturing Co., Ltd.Inventor: Hiroshi Kawai
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Patent number: 7109272Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.Type: GrantFiled: April 26, 2005Date of Patent: September 19, 2006Assignee: Kuraray Co., Ltd.Inventors: Kaoru Ikeda, Hiroshi Kawai
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Publication number: 20060204234Abstract: A lens barrel includes a lens mount for holding a lens in a barrel, a guide shaft extending parallel to an optical axis of the lens within the barrel and connected to the lens mount for guiding the lens mount along the optical axis, and a support operable to support opposite ends of the guide shaft in its extending direction within the barrel, the support including a support unit operable to support at least one of the opposite ends of the guide shaft, the support unit including a hole provided in the barrel, and a bearing member attached from the exterior of the barrel into the hole and being removable therefrom, the bearing member being rotatable about a center axis of the hole, wherein the bearing member includes a shaft inserted into the hole and a bearing hole provided in the shaft, with one end of the guide shaft being inserted into the bearing hole and a center axis of the bearing hole being eccentric from a center axis of the shaft.Type: ApplicationFiled: February 16, 2006Publication date: September 14, 2006Applicant: Sony CorporationInventors: Hiroshi Kawai, Hideharu Miyagaki
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Patent number: 7071250Abstract: A method for producing an ethylene-vinyl alcohol copolymer resin composition, said method comprising: (a) introducing into an extruder an ethylene-vinyl alcohol copolymer having a water content of at least 0.5 wt %; (b) further introducing into said extruder a liquid component comprising an aqueous solution of a resin, an aqueous dispersion of a resin, an aqueous dispersion of inorganic fine particles, or a mixture thereof; (c) subjecting said copolymer and said component to melt-kneading in said extruder; and (d) discharging the resulting ethylene-vinyl alcohol copolymer resin composition from the extruder. This method improves the dispersibility of a resin and/or inorganic fine particles in the EVOH while suppressing thermal deterioration of the EVOH.Type: GrantFiled: January 22, 2002Date of Patent: July 4, 2006Assignee: Kuraray Co., Ltd.Inventors: Hiroshi Kawai, Masao Hikasa, Takaharu Kawahara, Toshio Tuboi
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Publication number: 20060088301Abstract: An object of the present invention is to provide a high frequency heating apparatus having a steam generating function in which a time required till evaporation of dropped water can be remarkably increased when water is dropped onto an evaporation tray and the heating efficiency is high. In a high frequency heating apparatus having a steam generating function that includes a high frequency generator, and a steam generator comprising an evaporation tray provided on the bottom surface of a heating chamber in which a heating target is mounted and a heater device for heating the evaporation tray to generate steam in the heating chamber, the heater device is constructed as a heater device (11) having a sheathed heater (113) embedded in an aluminum die cast (111), and the heater device is directly attached to the back side of the evaporation tray (22).Type: ApplicationFiled: March 11, 2004Publication date: April 27, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kouji Kanzaki, Yuji Hayakawa, Takahiko Yamasaki, Yasuhisa Mori, Takayuki Akashi, Hiroshi Kawai
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Patent number: 6988436Abstract: The object of the present invention is to provide a turret punch press capable of discharging easily the small article work sheet cut off from the material work sheet, without employing a subhead separately from the punch driving mechanism. The punch press comprises a work sheet outlet 12 for discharging small article work sheet cut off from the material work sheet in the punch processing, employed in the lower turret 4. Moreover, a chute 13 connected to the work sheet outlet 12 is employed in a main body frame 1.Type: GrantFiled: September 19, 2001Date of Patent: January 24, 2006Assignee: Murata Kikai Kabushiki KaishaInventor: Hiroshi Kawai
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Publication number: 20050284602Abstract: The invention provides a plunger tip for die casting machines which is excellent in slidability and sealing properties. The plunger tip comprises a tip main body (20) and is slidable inside a plunger sleeve (60) for pushing out a molten metal into a die. The tip main body (20) is made of a metal material and covered over an outer peripheral surface thereof with a slide sleeve (40) made of a rigid resin material exhibiting high slidability and excellent sealing properties on the inner surface of the plunger sleeve.Type: ApplicationFiled: June 24, 2005Publication date: December 29, 2005Applicants: KUBOTA CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takahiro Kaba, Hiroshi Yamaguchi, Hiroshi Kawai
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Publication number: 20050215711Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.Type: ApplicationFiled: April 26, 2005Publication date: September 29, 2005Applicant: KURARAY CO. LTD,Inventors: Kaoru Ikeda, Hiroshi Kawai
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Patent number: 6949298Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 ?eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.Type: GrantFiled: January 30, 2002Date of Patent: September 27, 2005Assignee: Kuraray Co., Ltd.Inventors: Kaoru Ikeda, Hiroshi Kawai
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Patent number: 6884483Abstract: Multilayer blow molded containers, which comprise a layer of an ethylene-vinyl alcohol copolymer (A) having an ethylene content of 5 to 60% by mol and a degree of saponification of 85% or more and a layer of a resin composition (B), characterized in that the resin composition (B) comprises 1 to 40% by weight of a thermoplastic resin (b1) having at least one functional group selected from the group consisting of boron-containing groups that are convertible to a boronic acid group in the presence of water and a boronic acid group (hereinafter, referred to as a boron-containing functional group), and 60 to 99% by weight of polypropylene (b2), exhibit excellent gas-barrier properties, have good interlayer adhesion, have excellent thermal stability, and are low in production cost.Type: GrantFiled: December 6, 2002Date of Patent: April 26, 2005Assignee: Kuraray Co., Ltd.Inventors: Nahoto Hayashi, William Scott Lambert, Hiroshi Kawai, Kaoru Ikeda, Shinji Tai
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Publication number: 20050052821Abstract: A variable capacitance element includes a coplanar line or signal conduction and a movable body, which are vertically displaced through a supporting bar and which are provided on a substrate. A movable electrode is provided between a first driving electrode and second and third driving electrodes which are movable electrodes. Voltage is applied between the movable electrodes, such that one of the movable electrodes is pressed against the coplanar line through a dielectric film. Thus, high frequency signals conducting through the coplanar line are shut off. When voltage is applied between the other electrodes, the movable electrode and the dielectric film are moved apart from the coplanar line. Thus, high frequency signals are conducted through the coplanar line.Type: ApplicationFiled: September 24, 2004Publication date: March 10, 2005Applicant: Murata Manufacturing Co., Ltd.Inventors: Yasutaka Fujii, Shinji Kobayashi, Hiroshi Kawai, Koji Takemura, Yoshihiro Konaka, Masato Kobayashi
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Patent number: 6856219Abstract: An electrostatic actuator includes a movable member that is connected to a movable member securing section through a movable connection beam so that the movable member can be displaced in the x-axis direction. Drive electrode supporting sections are connected to drive electrode securing sections through driving connection beams so that they can move towards and away from each other. Gap sizes a, b, and c between first movable electrodes to third movable electrodes and respective first drive electrodes to third drive electrodes are successively larger. When the actuator operates, the movable member is displaced in a plurality of stages by electrostatic forces successively produced between the first movable electrode and the first drive electrode, the second movable electrode and the second drive electrode, and the third movable electrode and the third drive electrode.Type: GrantFiled: January 22, 2003Date of Patent: February 15, 2005Assignee: Murata Manufacturing Co., Ltd.Inventor: Hiroshi Kawai
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Patent number: 6838029Abstract: The present invention relates to a method of producing an ethylene-vinyl alcohol copolymer resin.Type: GrantFiled: January 4, 2002Date of Patent: January 4, 2005Assignee: Kuraray Co., Ltd.Inventors: Takaharu Kawahara, Toshio Tuboi, Yukihiro Ohara, Masao Hikasa, Hiroshi Kawai
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Patent number: 6833985Abstract: A variable capacitance element includes a coplanar line or signal conduction and a movable body, which are vertically displaced through a supporting bar and which are provided on a substrate. A movable electrode is provided between a first driving electrode and second and third driving electrodes which are movable electrodes. Voltage is applied between the movable electrodes, such that one of the movable electrodes is pressed against the coplanar line through a dielectric film. Thus, high frequency signals conducting through the coplanar line are shut off. When voltage is applied between the other electrodes, the movable electrode and the dielectric film are moved apart from the coplanar line. Thus, high frequency signals are conducted through the coplanar line.Type: GrantFiled: March 5, 2003Date of Patent: December 21, 2004Assignee: Murata Manufacturing Co., Ltd.Inventors: Yasutaka Fujii, Shinji Kobayashi, Hiroshi Kawai, Koji Takemura, Yoshihiro Konaka, Masato Kobayashi
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Publication number: 20040220366Abstract: A styrene/hydrogenated diene block copolymer characterized in that it has in side chains at least one kind of functional groups selected from the group consisting of a boronic acid group and a boron-containing group capable of converting into a boronic acid group in the presence of water, the content of the functional groups in the copolymer is 100 to 2,000 &mgr;eq/g, and the weight ratio of the styrene units to hydrogenated diene units contained in the copolymer is from 5/95 to 70/30. By thus incorporating a sufficient amount of boron-containing groups, a highly reactive styrene/hydrogenated diene block copolymer is provided.Type: ApplicationFiled: August 1, 2003Publication date: November 4, 2004Inventors: Kaoru Ikeda, Hiroshi Kawai
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Patent number: 6810737Abstract: A resonant element including: a vibrating body vibratable in orthogonal X- and Z-directions; exciting means for causing the vibrating body to be subjected to an excitation vibration in the X-direction; excitation deflection detecting means for detecting the deflection of the vibrating body in the Z-direction during the excitation vibration thereof in the X-direction; and excitation deflection inhibiting means for inhibiting the deflection of the vibrating body in the Z-direction.Type: GrantFiled: December 5, 2000Date of Patent: November 2, 2004Assignee: Murata Manfacturing Co., Ltd.Inventor: Hiroshi Kawai
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Patent number: 6794022Abstract: A metal plate coated with a lubricating resin is coated with a lubricating resin having a modified polyamide ({circle around (1)}) and a crosslinking curing agent ({circle around (2)}) of the modified polyamide ({circle around (1)}) on at least one side face of the metal plate. At this time, the compounding ratio of the modified polyamide ({circle around (1)}) and the above-described crosslinking curing agent ({circle around (2)}) is preferably (60:40) to (15:85) by mass ratio converted to solid content. Furthermore, according to requirement, an inorganic powder filler ({circle around (3)}) may be added to the resin composition.Type: GrantFiled: April 6, 2001Date of Patent: September 21, 2004Assignees: Kabushiki Kaisha Kobe Seiko Sho, Sun Aluminum Industries Co., Ltd.Inventors: Naoya Fujiwara, Eiichiro Yoshikawa, Hiroshi Kawai, Mikio Ono, Yasuhiro Okamura
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Publication number: 20040113727Abstract: An RF-MEMS switch includes a plurality of movable electrodes disposed with a space provided therebetween in the direction of RF signal conduction of an RF signal-conducting unit which is provided above the RF signal-conducting unit. A movable electrode displacing unit for displacing all the movable electrodes at the same time in the same direction towards or away from the RF signal-conducting unit is provided. The electrical length for the RF signal-conducting unit sandwiched between the movable electrodes is determined such that the amplitude of a combined signal including signals reflected in positions of the RF signal-conducting unit facing the movable electrodes is less than the amplitude of each of reflected signals reflected in positions of the RF signal-conducting unit facing the movable electrodes when the movable electrodes are displaced away from the RF signal-conducting unit and signal conduction of the RF signal-conducting unit is switched on.Type: ApplicationFiled: November 13, 2003Publication date: June 17, 2004Applicant: Murata Manufacturing Co., Ltd.Inventor: Hiroshi Kawai