Patents by Inventor Kingo Furukawa
Kingo Furukawa 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).
-
Publication number: 20240120673Abstract: Provided are a metal material and a connection terminal with which the characteristics of In can be obtained on the surface even after experiencing a high-temperature environment, and a method with which it is possible to manufacture such a metal material. The metal material 1 includes: a substrate 2; an intermediate layer 3 that contains at least Ni and that covers the surface of the substrate 2; and an In coating layer 4 comprising In or an In alloy that does not contain Ni other than as unavoidable impurities, the In coating layer 4 coating the surface of the intermediate layer 3 and being exposed on the outermost surface, In being contained at an amount greater than 7/3 times the amount of Ni as a ratio of the number of atoms in the intermediate layer 3 and the In coating layer 4 combined.Type: ApplicationFiled: February 17, 2022Publication date: April 11, 2024Inventors: Daisuke KAWADA, Kingo FURUKAWA, Hajime WATANABE, Michitake KAMAMOTO
-
Publication number: 20230130798Abstract: A PCB terminal is provided with a rod-like base material and a plating layer covering a predetermined region of the base material. A constituent material of the base material is a copper alloy containing 20% by mass or more of zinc. The plating layer includes a first coating portion and a second coating portion. The first coating portion includes an entire peripheral layer entirely covering a region on side of a first end part, out of both end parts of the base material, in a circumferential direction of the base material. The second coating portion partially covers a region on side of a second end part, out of the both end parts of the base material, in the circumferential direction of the base material. The entire peripheral layer includes a tin-based layer and a barrier layer.Type: ApplicationFiled: March 24, 2021Publication date: April 27, 2023Inventors: Michitake KAMAMOTO, Kingo FURUKAWA, Yoshifumi SAKA, Hajime WATANABE
-
Publication number: 20230116303Abstract: Provided is a metal material including a substrate and an Ag—Sn covering layer that covers a surface of the substrate, in which the Ag—Sn covering layer contains Ag and Sn and has an Ag—Sn alloy exposed on a surface thereof, and an average crystal grain size in a cross section in parallel with a surface of the Ag—Sn covering layer is less than 0.28 ?m. Provided is also a metal material, produced by forming a metal layer including Ag and Sn, on a surface of a substrate, and heating the resultant at a temperature equal to or more than the melting point of Sn, and including an Ag—Sn covering layer containing Ag and Sn and having an Ag—Sn alloy exposed on a surface thereof, on the surface of the substrate.Type: ApplicationFiled: March 3, 2021Publication date: April 13, 2023Inventors: Ryo KEMMOTSU, Kingo FURUKAWA
-
Publication number: 20230042851Abstract: A connection terminal having a copper alloy as a base material, the copper alloy comprising Zn in an amount of 21 mass % or more and 27 mass % or less, Sn in an amount of 0.6 mass % or more and 0.9 mass % or less, Ni in an amount of 2.5 mass % or more and 3.7 mass % or less, and P in an amount of 0.01 mass % or more and 0.03 mass % or less, and the balance being Cu and inevitable impurities, wherein the copper alloy has: a 0.2% proof stress of 620 MPa or higher and 700 MPa or lower, and an electrical conductivity of 15% IACS or higher and 20% IACS or lower.Type: ApplicationFiled: January 12, 2021Publication date: February 9, 2023Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., MITSUBISHI MATERIALS CORPORATIONInventors: Toshiro SAKAI, Kingo FURUKAWA, Takeshi MASUDA, Tetsuya KUWABARA, Michio TAKASAKI
-
Patent number: 11239594Abstract: The electrical contact material includes a base material, a coating layer provided on a surface of the base material, and an oxide layer provided on a surface of the coating layer. The base material contains Cu. The coating layer includes an undercoat layer, a first layer, and a second layer that are provided in that order from the base material side. The undercoat layer contains Ni. The first layer contains Ni, Zn, Cu, and Sn. The second layer contains Sn. The oxide layer is constituted by an oxide containing Zn, Cu, and Sn. The undercoat layer has a thickness larger than 0.5 ?m.Type: GrantFiled: July 24, 2020Date of Patent: February 1, 2022Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa Shirai, Yasushi Saito, Kingo Furukawa, Mitsuhiro Kumondai, Akihisa Hosoe
-
Patent number: 11228127Abstract: Provided is an electrical contact material that can suppress an increase in contact resistance even if contact pressure with a counterpart material is small. An electrical contact material that includes a base material made of metal, a metal layer provided on a surface of the base material, and an oxide layer provided on a surface of the metal layer. The metal layer is made of metal that contains zinc, copper, and tin, the oxide layer is made of an oxide that contains zinc, copper, and tin, and beneath the oxide layer, a ratio of the atomic concentration of copper to the atomic concentration of tin is less than 1.4.Type: GrantFiled: June 10, 2020Date of Patent: January 18, 2022Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa Shirai, Yasushi Saito, Kingo Furukawa, Mitsuhiro Kumondai, Akihisa Hosoe
-
Patent number: 11211730Abstract: An object of the invention is to provide a connector terminal in which an outermost layer is not susceptible to wear due to repeated sliding, an electrical wire with terminal and a terminal pair. The connector terminal includes a base material and an outermost layer provided on at least part of the base material. A constituent material of the outermost layer contains 98 mass % or more of Ag, and a Vickers hardness of the outermost layer with a measuring load of 0.1 N is from 115 HV to 160 HV inclusive.Type: GrantFiled: May 6, 2020Date of Patent: December 28, 2021Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa Shirai, Kingo Furukawa
-
Publication number: 20210044045Abstract: The electrical contact material includes a base material, a coating layer provided on a surface of the base material, and an oxide layer provided on a surface of the coating layer. The base material contains Cu. The coating layer contains Zn, Cu, and Sn. The oxide layer is constituted by an oxide containing Zn, Cu, and Sn. When a spherical indenter with a radius of 1 mm is linearly slid against the oxide layer with an applied load of 1 N, a sliding speed of 100 ?m/sec, a stroke of 50 ?m, and 10 reciprocation cycles, the largest contact resistance measured after the first to 10th reciprocation cycles is not larger than 5 m?.Type: ApplicationFiled: July 24, 2020Publication date: February 11, 2021Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa SHIRAI, Yasushi SAITO, Kingo FURUKAWA, Mitsuhiro KUMONDAI, Akihisa HOSOE
-
Publication number: 20210044046Abstract: The electrical contact material includes a base material, a coating layer provided on a surface of the base material, and an oxide layer provided on a surface of the coating layer. The base material contains Cu. The coating layer includes an undercoat layer, a first layer, and a second layer that are provided in that order from the base material side. The undercoat layer contains Ni. The first layer contains Ni, Zn, Cu, and Sn. The second layer contains Sn. The oxide layer is constituted by an oxide containing Zn, Cu, and Sn. The undercoat layer has a thickness larger than 0.5 ?m.Type: ApplicationFiled: July 24, 2020Publication date: February 11, 2021Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa SHIRAI, Yasushi SAITO, Kingo FURUKAWA, Mitsuhiro KUMONDAI, Akihisa HOSOE
-
Publication number: 20200412044Abstract: Provided is an electrical contact material that can suppress an increase in contact resistance even if contact pressure with a counterpart material is small. An electrical contact material that includes a base material made of metal, a metal layer provided on a surface of the base material, and an oxide layer provided on a surface of the metal layer. The metal layer is made of metal that contains zinc, copper, and tin, the oxide layer is made of an oxide that contains zinc, copper, and tin, and beneath the oxide layer, a ratio of the atomic concentration of copper to the atomic concentration of tin is less than 1.4.Type: ApplicationFiled: June 10, 2020Publication date: December 31, 2020Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa SHIRAI, Yasushi SAITO, Kingo FURUKAWA, Mitsuhiro KUMONDAI, Akihisa HOSOE
-
Publication number: 20200366020Abstract: An object of the invention is to provide a connector terminal in which an outermost layer is not susceptible to wear due to repeated sliding, an electrical wire with terminal and a terminal pair. The connector terminal includes a base material and an outermost layer provided on at least part of the base material. A constituent material of the outermost layer contains 98 mass % or more of Ag, and a Vickers hardness of the outermost layer with a measuring load of 0.1 N is from 115 HV to 160 HV inclusive.Type: ApplicationFiled: May 6, 2020Publication date: November 19, 2020Inventors: Yoshimasa Shirai, Kingo Furukawa
-
Patent number: 10594062Abstract: It is aimed to provide a press-fit terminal connection structure in which a board connecting portion of a press-fit terminal is press-fit into a through hole provided in a printed circuit board and which can combine the suppression of scraping of a surface layer and a reduction of a necessary load when the press-fit terminal is inserted into and withdrawn from the through hole and an improvement of a holding force for keeping the press-fit terminal inserted in the through hole. In the press-fit terminal connection structure, the press-fit terminal includes, at least on a surface of the contact point portion, an alloy containing layer mainly containing tin and palladium, and the through hole includes a tin layer on an outermost surface of an inner peripheral surface including at least the contact point portion.Type: GrantFiled: May 11, 2017Date of Patent: March 17, 2020Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa Shirai, Yasushi Saitoh, Kingo Furukawa, Tetsuhiko Kawasaki, Masayuki Ookubo, Hajime Watanabe, Yoshiyasu Tsuchiya, Akihiro Kato
-
Publication number: 20190140376Abstract: It is aimed to provide a press-fit terminal connection structure in which a board connecting portion of a press-fit terminal is press-fit into a through hole provided in a printed circuit board and which can combine the suppression of scraping of a surface layer and a reduction of a necessary load when the press-fit terminal is inserted into and withdrawn from the through hole and an improvement of a holding force for keeping the press-fit terminal inserted in the through hole. In the press-fit terminal connection structure, the press-fit terminal includes, at least on a surface of the contact point portion, an alloy containing layer mainly containing tin and palladium, and the through hole includes a tin layer on an outermost surface of an inner peripheral surface including at least the contact point portion.Type: ApplicationFiled: May 11, 2017Publication date: May 9, 2019Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Yoshimasa SHIRAI, Yasushi SAITOH, Kingo FURUKAWA, Tetsuhiko KAWASAKI, Masayuki OOKUBO, Hajime WATANABE, Yoshiyasu TSUCHIYA, Akihiro KATO
-
Publication number: 20170324180Abstract: A connector terminal capable of improving corrosion resistance even if a metal base material is made of Fe or Fe-based alloy. The connector terminal is made of a terminal material including a plating film on a surface of the metal base material. The metal base material is made of Fe or Fe-based alloy. The connector terminal includes a base material exposed part formed by exposing the metal base material and a coating film made of anti-rust oil and covering a surface of the base material exposed part. The base material exposed part can be present at a punched fracture surface formed by punching the terminal material and/or at a bent portion formed by bending the terminal material.Type: ApplicationFiled: November 6, 2015Publication date: November 9, 2017Inventors: Takashi NATSUME, Kingo FURUKAWA, Mikio SATOU
-
Patent number: 9490550Abstract: Provided are an aluminum-based terminal fitting in which a Sn layer has high peel resistance, and a terminal connecting structure of an electric wire provided with the terminal fitting. The aluminum-based terminal fitting includes a wire barrel portion (110) for connection to a conductor (210) constituted by aluminum or an aluminum alloy and provided in an electric wire (200), and a fitting portion (female fitting portion (130) or male fitting portion (140)) provided to extend from the wire barrel portion (110) and electrically connected to a separate terminal fitting. A Sn layer formed directly on a base material constituting the terminal fitting is provided on the contact region in the fitting portion.Type: GrantFiled: August 22, 2012Date of Patent: November 8, 2016Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
-
Patent number: 9252505Abstract: An object is to obtain a stable electric connection resistance under a mild crimping condition. The present invention is a terminal connector 12 that includes a crimp portion 30 to be crimped to an electric wire. The crimp portion 30 includes a base material, an aluminum layer or an aluminum alloy layer a surface on the base material, and a hard layer on a surface of the aluminum layer or the aluminum alloy layer. The hard layer is harder than the base material. The present invention may be an electric wire with a terminal connector 10 that includes the above terminal connector 12 and a covered electric wire 40 that includes a core wire 42 made of aluminum or aluminum alloy. The crimp portion 30 of the terminal connector 12 is crimped to the core wire 42.Type: GrantFiled: August 30, 2012Date of Patent: February 2, 2016Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
-
Publication number: 20140235116Abstract: Provided are an aluminum-based terminal fitting in which a Sn layer has high peel resistance, and a terminal connecting structure of an electric wire provided with the terminal fitting. The aluminum-based terminal fitting includes a wire barrel portion (110) for connection to a conductor (210) constituted by aluminum or an aluminum alloy and provided in an electric wire (200), and a fitting portion (female fitting portion (130) or male fitting portion (140)) provided to extend from the wire barrel portion (110) and electrically connected to a separate terminal fitting. A Sn layer formed directly on a base material constituting the terminal fitting is provided on the contact region in the fitting portion.Type: ApplicationFiled: August 22, 2012Publication date: August 21, 2014Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi
-
Publication number: 20140224535Abstract: An object is to obtain a stable electric connection resistance under a mild crimping condition. The present invention is a terminal connector 12 that includes a crimp portion 30 to be crimped to an electric wire. The crimp portion 30 includes a base material, an aluminum layer or an aluminum alloy layer a surface on the base material, and a hard layer on a surface of the aluminum layer or the aluminum alloy layer. The hard layer is harder than the base material. The present invention may be an electric wire with a terminal connector 10 that includes the above terminal connector 12 and a covered electric wire 40 that includes a core wire 42 made of aluminum or aluminum alloy. The crimp portion 30 of the terminal connector 12 is crimped to the core wire 42.Type: ApplicationFiled: August 30, 2012Publication date: August 14, 2014Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO WIRING SYSTEMS, LTD.Inventors: Takuji Otsuka, Hiroki Hirai, Junichi Ono, Kingo Furukawa, Teruyoshi Munekata, Hajime Ota, Yoshihiro Nakai, Taichiro Nishikawa, Tetsuya Kuwabara, Yoshiyuki Takaki, Hiroyuki Kobayashi