Patents by Inventor Tadashi Furuya
Tadashi Furuya 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: 11786967Abstract: An object of the present invention is to provide an additively manufactured part with high temperature strength and high ductility that can be suitably used for hot forging even in the temperature range of 800° C. or more, and a manufacturing method therefor. The manufacturing method for the additively manufactured part in accordance with the present invention includes an additive manufacturing step of using composite powder containing ceramic and metal and having voids therein to form a composite material containing the ceramic and the metal by repeating steps of melting and solidifying the composite powder; and a remelting step of remelting the surface of the composite material.Type: GrantFiled: May 1, 2017Date of Patent: October 17, 2023Assignee: PROTERIAL, LTD.Inventors: Makoto Ogata, Shuho Koseki, Tadashi Furuya
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Patent number: 11713496Abstract: The present disclosure provides a powder material that makes it possible to achieve higher flowability than before and to increase the crushing strength of particles. The powder material of the present disclosure has a dendritic structure 1. The dendritic structure 1 has a cemented carbide composition or a cermet composition.Type: GrantFiled: November 27, 2018Date of Patent: August 1, 2023Assignee: Proterial, Ltd.Inventors: Hirotsugu Kawanaka, Hiroshi Shiratori, Shuho Koseki, Tadashi Furuya, Gang Han, Kiyomi Nakamura
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Patent number: 11536637Abstract: Provided is an abrasion test apparatus for measuring an abrasion state of a workpiece, including: a workpiece holding mechanism holding the workpiece; a contact tool repeatedly making contact and non-contact with the workpiece; a rotating mechanism holding the contact tool to be freely rotatable; and a heating mechanism intermittently heating an end portion of the contact tool.Type: GrantFiled: July 19, 2017Date of Patent: December 27, 2022Assignee: Hitachi Metals, Ltd.Inventors: Yoshihiko Kobayashi, Shuho Koseki, Tadashi Furuya, Katsuhiro Obata, Fumiaki Honda, Takahiro Makiyama
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Publication number: 20210372899Abstract: Provided is an abrasion test apparatus for measuring an abrasion state of a workpiece, including: a workpiece holding mechanism holding the workpiece; a contact tool repeatedly making contact and non-contact with the workpiece; a rotating mechanism holding the contact tool to be freely rotatable; and a heating mechanism intermittently heating an end portion of the contact tool.Type: ApplicationFiled: July 19, 2017Publication date: December 2, 2021Applicant: HITACHI METALS, LTD.Inventors: Yoshihiko KOBAYASHI, Shuho KOSEKI, Tadashi FURUYA, Katsuhiro OBATA, Fumiaki HONDA, Takahiro MAKIYAMA
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Publication number: 20210170480Abstract: The present disclosure provides a powder material that makes it possible to achieve higher flowability than before and to increase the crushing strength of particles. The powder material of the present disclosure has a dendritic structure 1. The dendritic structure 1 has a cemented carbide composition or a cermet composition.Type: ApplicationFiled: November 27, 2018Publication date: June 10, 2021Applicant: HITACHI METALS, LTD.Inventors: Hirotsugu KAWANAKA, Hiroshi SHIRATORI, Shuho KOSEKI, Tadashi FURUYA, Gang HAN, Kiyomi NAKAMURA
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Patent number: 10858295Abstract: The present invention pertains to high-strength/high-ductility alloys, and in particular, provides high-strength composite particles comprising a ceramic phase and a metal phase, a composite powder, a method for manufacturing composite particles, and a method for manufacturing a composite member. Composite particles including a ceramic phase and a metal phase, wherein the composite particles are characterized in that the porosity is no greater than 45% in area ratio in cross-section, and the area ratio of the metal phase, where the total area of the ceramic phase and the metal phase is 100%, is at least 20%. A composite powder characterized in including a plurality of the composite particles.Type: GrantFiled: February 23, 2017Date of Patent: December 8, 2020Assignee: HITACHI METALS, LTD.Inventors: Shuho Koseki, Tadashi Furuya, Daiki Shinno, Kenichi Inoue
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Publication number: 20200299814Abstract: Provided is a cemented carbide composite material including cemented carbide and non-cemented carbide having better high-temperature strength than conventional materials and capable of suppressing breakage and peeling of the composite material. A cemented carbide composite material includes: a cemented carbide part including WC—Co-based cemented carbide; a substrate part including metal that contains at least one of Ni and Co that accounts for 50 mass % or more in total. This cemented carbide composite material has an intermediate layer between the cemented carbide composite material and the substrate part, the intermediate layer containing components of the cemented carbide part and components of the substrate part. The intermediate layer includes a part having a gamma phase fraction of 80% or more and having Vickers hardness less than 700 HV.Type: ApplicationFiled: September 20, 2018Publication date: September 24, 2020Applicant: HITACHI METALS, LTD.Inventors: Hiroshi SHIRATORI, Hirotsugu KAWANAKA, Shuho KOSEKI, Tadashi FURUYA
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Publication number: 20190111520Abstract: An object of the present invention is to provide an additively manufactured part with high temperature strength and high ductility that can be suitably used for hot forging even in the temperature range of 800° C. or more, and a manufacturing method therefor. The manufacturing method for the additively manufactured part in accordance with the present invention includes an additive manufacturing step of using composite powder containing ceramic and metal and having voids therein to form a composite material containing the ceramic and the metal by repeating steps of melting and solidifying the composite powder; and a remelting step of remelting the surface of the composite material.Type: ApplicationFiled: May 1, 2017Publication date: April 18, 2019Applicant: HITACHI METALS, LTD.Inventors: Makoto OGATA, Shuho KOSEKI, Tadashi FURUYA
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Publication number: 20190016641Abstract: The present invention pertains to high-strength/high-ductility alloys, and in particular, provides high-strength composite particles comprising a ceramic phase and a metal phase, a composite powder, a method for manufacturing composite particles, and a method for manufacturing a composite member. Composite particles including a ceramic phase and a metal phase, wherein the composite particles are characterized in that the porosity is no greater than 45% in area ratio in cross-section, and the area ratio of the metal phase, where the total area of the ceramic phase and the metal phase is 100%, is at least 20%. A composite powder characterized in including a plurality of the composite particles.Type: ApplicationFiled: February 23, 2017Publication date: January 17, 2019Applicant: HITACHI METALS, LTD.Inventors: Shuho KOSEKI, Tadashi FURUYA, Daiki SHINNO, Kenichi INOUE
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Patent number: 6784125Abstract: The invention provides a thermoplastic elastomer nonwoven fabric roll that exhibits minimal longitudinal wrinkles and minimal delayed restoration when unrolled, and method and apparatus for producing the same. Thermoplastic elastomer filaments that have been melt-spun are piled on a belt conveyor thereby forming a sheet of nonwoven fabric, that is guided to a rotating roller disposed above the transportation zone of the belt conveyor and peeled off therefrom. Since minimal tension is applied to the nonwoven fabric during processing, the nonwoven fabric can be unrolled with little stretching by applying relatively little tension to the nonwoven fabric. By the method of this invention, a nonwoven fabric roll with unrolling tension of 0.25 g/cm/basis-weight or less can be formed.Type: GrantFiled: June 16, 2000Date of Patent: August 31, 2004Assignees: Kanebo, Ltd., Kanebo Gohsen, Ltd.Inventors: Yukio Yamakawa, Tadashi Furuya, Tsutomu Teshima, Yutaka Tanaka
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Patent number: 6784127Abstract: A polyurethane elastomer fiber non-woven fabric contains polyurethane elastomer fiber filaments melt-bonded with one another, and has a tensile elongation of 100% or more, a 50% elongation recovery of 75% or more and a tear strength per METSUKE of 5.5 gf or more. The non-woven fabric can be prepared by a method of providing a thermoplastic polyurethane elastomer having Shore hardness A of 92 or more, drying the elastomer to a water content of 150 ppm or less, and melt-spinning and, at the same time, spraying it together with a high speed gas stream so as to deposit and laminate the elastomer into a sheet form. A synthetic leather using the non-woven fabric is also provided. The non-woven fabric has not only an excellent elasticity but also high tear strength.Type: GrantFiled: September 24, 2001Date of Patent: August 31, 2004Assignees: Kanebo, Limited, Kanebo Gohsen, LimitedInventors: Yukio Yamakawa, Tadashi Furuya, Eiji Kawabata, Yutaka Tanaka
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Publication number: 20030119411Abstract: The invention provides a thermoplastic elastomer nonwoven fabric roll that exhibits minimal longitudinal wrinkles and minimal delayed restoration when unrolled, and a method and apparatus for producing the same. Thermoplastic elastomer filaments that have been melt-spun are piled on a belt conveyor thereby forming a sheet of nonwoven fabric, that is guided to a rotating roller disposed above the transportation zone of the belt conveyor and peeled off therefrom. Since minimal tension is applied to the nonwoven fabric during processing, the nonwoven fabric can be unrolled with little stretching by applying relatively little tension to the nonwoven fabric. By the method of this invention, a nonwoven fabric roll with unrolling tension of 0.25 g/cm/basis-weight or less can be formed.Type: ApplicationFiled: October 18, 2002Publication date: June 26, 2003Inventors: Yukio Yamakawa, Tadashi Furuya, Tsutomu Teshima, Yutaka Tanaka
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Publication number: 20030108633Abstract: The invention provides a thermoplastic elastomer nonwoven fabric roll that exhibits minimal longitudinal wrinkles and minimal delayed restoration when unrolled, and a method and apparatus for producing the same. Thermoplastic elastomer filaments that have been melt-spun are piled on a belt conveyor thereby forming a sheet of nonwoven fabric, that is guided to a rotating roller disposed above the transportation zone of the belt conveyor and peeled off therefrom. Since minimal tension is applied to the nonwoven fabric during processing, the nonwoven fabric can be unrolled with little stretching by applying relatively little tension to the nonwoven fabric. By the method of this invention, a nonwoven fabric roll with unrolling tension of 0.25 g/cm/basis-weight or less can be formed.Type: ApplicationFiled: October 18, 2002Publication date: June 12, 2003Inventors: Yukio Yamakawa, Tadashi Furuya, Tsutomu Teshima, Yutaka Tanaka
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Patent number: 6507719Abstract: An image forming apparatus includes an image bearing body. The image bearing body is charged by a charging device including a magnetic brush which is brought into contact with the image bearing body and which is formed by a magnetic particle layer. The image bearing body is exposed by a pre-exposing device after an image formed on the image bearing body is transferred to an image receiving member and before the photosensitive body is charged by the charging device. The pre-exposing device exposes the image bearing body with an exposure width smaller than a width with which the charging device charges the image bearing body in a longitudinal direction of the charging device. The exposure width is larger than an image formation width in the longitudinal direction of the charging device.Type: GrantFiled: June 27, 2001Date of Patent: January 14, 2003Assignee: Canon Kabushiki KaishaInventor: Tadashi Furuya
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Publication number: 20020012548Abstract: An object of the present invention is to provide an image forming apparatus that has an amorphous silicon photosensitive body, charging device for charging the photosensitive body, the charging device including a magnetic brush which is brought into contact with the photosensitive body and is formed by a magnetic particle layer, and pre-exposing device for exposing the photosensitive body after an image formed on the photosensitive body is transferred to an image receiving member before the photosensitive body is charged by the charging device, the pre-exposing device exposing the photosensitive body with an exposure width smaller than a width with which the charging device charges the photosensitive body in a longitudinal direction of the charging device.Type: ApplicationFiled: June 27, 2001Publication date: January 31, 2002Inventor: Tadashi Furuya
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Patent number: 6301459Abstract: A charging apparatus includes a first charging member of being supplied with a voltage to charge a member to be charged. A first charging member has magnetic particles in the form of a magnetic brush contactable to the member to be charged. A second charging member charges a region of the member to be charged corresponding to an end portion, in a longitudinal direction of the charging member, of the magnetic particles, wherein by the second charging member, the region has a potential of the same charge polarity of the voltage when the region reaches a charging position of this first charging member.Type: GrantFiled: February 11, 2000Date of Patent: October 9, 2001Assignee: Canon Kabushiki KaishaInventors: Harumi Ishiyama, Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo
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Patent number: 6301455Abstract: A charging apparatus includes a member to be charged having a charge retaining layer for retaining a charge and an electroconductive base. A charging member capable of being supplied with a voltage is provided to charge the member to be charged. The charging member includes magnetic particles in the form of a magnetic brush contactable to the member to be charged, wherein the member to be charged has an electroconductive member electrically insulated from the electroconductive base in a region corresponding to an end portion, in a longitudinal direction of the charging member.Type: GrantFiled: February 11, 2000Date of Patent: October 9, 2001Assignee: Canon Kabushiki KaishaInventors: Harumi Ishiyama, Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo
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Patent number: 6157800Abstract: A charging device for charging a member to be charged includes a charging member to which a voltage is applicable to charge the member to be charged, the charging member having a magnetic brush of magnetic particles contactable to the member to be charged, and a supporting member for supporting the magnetic particles; wherein the the magnetic particles have a resistance value of 1.times.10.sup.4 -1.times.10.sup.7 (Ohm) when 1-1000(V) is applied thereto.Type: GrantFiled: August 8, 1995Date of Patent: December 5, 2000Assignee: Canon Kabushiki KaishaInventors: Harumi Ishiyama, Hideyuki Yano, Tadashi Furuya
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Patent number: 6118952Abstract: An image forming apparatus has an image forming unit for forming a toner image on a recording material, the image forming unit including an image bearing member for bearing a toner image, and a charging device provided with a magnetic particle layer contactable to the image bearing member to charge the image bearing member; and a determining device for determining an image forming condition of the image forming unit in accordance with a physical quantity relating to a toner amount introduced in the magnetic particle layer or deciding prohibition of the image forming operation of the image forming unit.Type: GrantFiled: March 4, 1997Date of Patent: September 12, 2000Assignee: Canon Kabushiki KaishaInventor: Tadashi Furuya
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Patent number: 6061539Abstract: A charging member supporting magnetic particles for charging a member to be charged, including: an electroconductive member to which a voltage is applicable; and a member electrically insulated from the electroconductive member at an end portion, in a longitudinal direction of the charging member, of the magnetic particles, wherein deposition of magnetic particles to the member to be charged from the charging member is effectively prevented.Type: GrantFiled: August 8, 1995Date of Patent: May 9, 2000Assignee: Canon Kabushiki KaishaInventors: Harumi Ishiyama, Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo