Patents by Inventor Shinya Katsura
Shinya Katsura 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).
-
Patent number: 10597792Abstract: An electrically conductive material for a connection component that includes a Cu—Sn alloy coating layer in which a Cu content is 55 to 70 atomic % and has an average thickness of 0.1 to 3.0 ?m, and a Sn coating layer having an average thickness of 0.2 to 5.0 ?m, which are formed in this order on a surface of a base material made of a copper or copper alloy sheet strip. When a reflected electron image of a material surface is observed with a scanning electron microscope at a magnification of 100 times, a region A and a region B having a higher brightness than the region A and in which the Cu—Sn alloy coating layer is not exposed coexist on the material surface, and an area ratio of the region A on the material surface is 2 to 65%.Type: GrantFiled: June 21, 2016Date of Patent: March 24, 2020Assignee: Kobe Steel, Ltd.Inventors: Masahiro Tsuru, Shinya Katsura
-
Patent number: 10233517Abstract: A copper alloy sheet strip with a surface coating layer, including: a copper alloy sheet strip, as a base material, including copper, 1.0 to 4.5% by mass of Ni and/or Co and 0.2 to 1.0% by mass of Si, based on the total amount of the copper alloy sheet strip; and a surface coating layer including a Ni layer, a Cu—Sn alloy layer and a Sn layer formed on a surface of the copper alloy sheet strip in this order. A Cu—Sn alloy layer is partially exposed on an outermost surface of the surface coating layer such that a surface exposed area ratio is from 3 to 75%. A surface roughness of the surface coating layer is 0.15 ?m or more in at least one direction, and 3.0 ?m or less in all directions.Type: GrantFiled: February 20, 2015Date of Patent: March 19, 2019Assignee: Kobe Steel, Ltd.Inventors: Masahiro Tsuru, Shinya Katsura
-
Publication number: 20180371633Abstract: An electrically conductive material for a connection component is disclosed. The electrically conductive material includes a Cu—Sn alloy coating layer 5 in which a Cu content is 55 to 70 at % and has an average thickness of 0.1 to 3.0 ?m, and a Sn coating layer 6 having an average thickness of 0.2 to 5.0 ?m, which are formed in this order on a surface of a base material made of a copper or copper alloy sheet strip. When a reflected electron image of a material surface is observed with a scanning electron microscope at a magnification of 100 times, a region A and a region B having a higher brightness than the region A and in which the Cu—Sn alloy coating layer is not exposed coexist on the material surface, and an area ratio of the region A on the material surface is 2 to 65%.Type: ApplicationFiled: December 21, 2016Publication date: December 27, 2018Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Masahiro TSURU, Shinya KATSURA
-
Patent number: 9845521Abstract: A copper alloy containing Ni: 1.5%-3.6% and Si: 0.3%-1.0% in terms of mass percent with the remainder consisting of copper and unavoidable impurities, wherein: the average crystal grain size of the crystal grains in the copper alloy is 5 to 30 ?m; the area ratio of the crystal grains having crystal grain sizes not less than twice the average crystal grain size is not less than 3%; and the ratio of the area of cube orientation grains to the area of the crystal grains having crystal grain sizes not less than twice the average crystal grain size is not less than 50%.Type: GrantFiled: November 18, 2011Date of Patent: December 19, 2017Assignee: Kobe Steel, Ltd.Inventors: Hisao Shishido, Shinya Katsura, Yasuhiro Aruga, Katsushi Matsumoto
-
Patent number: 9790575Abstract: An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satisfying a Ni/Si mass ratio of 4.0 to 5.0, 0.01 to 1.3 percent by mass of Sn, and the remainder composed of copper and incidental impurities, wherein the average crystal grain size is 5 to 20 ?m, the standard deviation of the crystal grain size satisfies 2?<10 ?m, and the proportion of the number of particles having a particle diameter of 90 to 300 nm in Ni—Si dispersed particles having a particle diameter of 30 to 300 nm is 20% or more, where the particles are observed in a cross-section defined by a direction perpendicular to a sheet surface and a direction parallel to a rolling direction.Type: GrantFiled: October 19, 2015Date of Patent: October 17, 2017Assignee: Kobe Steel, Ltd.Inventor: Shinya Katsura
-
Publication number: 20170058382Abstract: Disclosed is a copper alloy sheet strip with a surface coating layer, including a copper alloy sheet strip, as a base material, consisting of 1.0 to 4.5% by mass of one or more of Ni and Co and 0.2 to 1.0% by mass of Si, with the balance being copper and inevitable impurities; and the surface coating layer composed of a Ni layer, a Cu—Sn alloy layer, and a Sn layer formed on a surface of the copper alloy sheet strip in this order; wherein the Ni layer has an average thickness of 0.1 to 3.0 ?m, the Cu—Sn alloy layer has an average thickness of 0.2 to 3.0 ?m, and the Sn layer has an average thickness of 0.05 to 5.Type: ApplicationFiled: February 20, 2015Publication date: March 2, 2017Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Masahiro TSURU, Shinya KATSURA
-
Patent number: 9514856Abstract: Disclosed is a copper alloy containing 1.0% to 3.6% of Ni, 0.2% to 1.0% of Si, 0.05% to 3.0% of Sn, 0.05% to 3.0% of Zn, with the remainder including copper and inevitable impurities. The copper alloy has an average grain size of 25 ?m or less and has a texture having an average area percentage of cube orientation of 20% to 60% and an average total area percentage of brass orientation, S orientation and copper orientation of 20% to 50%. The copper alloy has a KAM value of 0.8 to 3.0 and does not suffer from cracking even when subjected to U-bending. The copper alloy has excellent balance between strengths (particularly yield strength in a direction perpendicular to the rolling direction) and bending workability.Type: GrantFiled: August 4, 2011Date of Patent: December 6, 2016Assignee: Kobe Steel, Ltd.Inventors: Hisao Shishido, Yasuhiro Aruga, Shinya Katsura, Katsushi Matsumoto
-
Publication number: 20160040270Abstract: An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satisfying a Ni/Si mass ratio of 4.0 to 5.0, 0.01 to 1.3 percent by mass of Sn, and the remainder composed of copper and incidental impurities, wherein the average crystal grain size is 5 to 20 ?m, the standard deviation of the crystal grain size satisfies 2?<10 ?m, and the proportion of the number of particles having a particle diameter of 90 to 300 nm in Ni—Si dispersed particles having a particle diameter of 30 to 300 nm is 20% or more, where the particles are observed in a cross-section defined by a direction perpendicular to a sheet surface and a direction parallel to a rolling direction.Type: ApplicationFiled: October 19, 2015Publication date: February 11, 2016Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventor: Shinya KATSURA
-
Patent number: 9194026Abstract: An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satisfying a Ni/Si mass ratio of 4.0 to 5.0, 0.01 to 1.3 percent by mass of Sn, and the remainder composed of copper and incidental impurities, wherein the average crystal grain size is 5 to 20 ?m, the standard deviation of the crystal grain size satisfies 2?<10 ?m, and the proportion of the number of particles having a particle diameter of 90 to 300 nm in Ni—Si dispersed particles having a particle diameter of 30 to 300 nm is 20% or more, where the particles are observed in a cross-section defined by a direction perpendicular to a sheet surface and a direction parallel to a rolling direction.Type: GrantFiled: March 13, 2013Date of Patent: November 24, 2015Assignee: (Kobe Steel, Ltd.)Inventor: Shinya Katsura
-
Publication number: 20140193293Abstract: Disclosed is a copper alloy containing 1.0% to 3.6% of Ni, 0.2% to 1.0% of Si, 0.05% to 3.0% of Sn, 0.05% to 3.0% of Zn, with the remainder including copper and inevitable impurities. The copper alloy has an average grain size of 25 pm or less and has a texture having an average area percentage of cube orientation of 20% to 60% and an average total area percentage of brass orientation, S orientation and copper orientation of 20% to 50%. The copper alloy has a KAM value of 0.8 to 3.0 and does not suffer from cracking even when subjected to U-bending. The copper alloy has excellent balance between strengths (particularly yield strength in a direction perpendicular to the rolling direction) and bending workability.Type: ApplicationFiled: August 4, 2011Publication date: July 10, 2014Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hisao Shishido, Yasuhiro Aruga, Shinya Katsura, Katsushi Matsumoto
-
Publication number: 20130255838Abstract: An electric and electronic part copper alloy sheet with excellent bending workability and stress relaxation resistance is made from a copper alloy containing 1.5 to 4.0 percent by mass of Ni, Si satisfying a Ni/Si mass ratio of 4.0 to 5.0, 0.01 to 1.3 percent by mass of Sn, and the remainder composed of copper and incidental impurities, wherein the average crystal grain size is 5 to 20 ?m, the standard deviation of the crystal grain size satisfies 2?<10 ?m, and the proportion of the number of particles having a particle diameter of 90 to 300 nm in Ni—Si dispersed particles having a particle diameter of 30 to 300 nm is 20% or more, where the particles are observed in a cross-section defined by a direction perpendicular to a sheet surface and a direction parallel to a rolling direction.Type: ApplicationFiled: March 13, 2013Publication date: October 3, 2013Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventor: Shinya KATSURA
-
Publication number: 20120148439Abstract: A copper alloy containing Ni: 1.5%-3.6% and Si: 0.3%-1.0% in terms of mass percent with the remainder consisting of copper and unavoidable impurities, wherein: the average crystal grain size of the crystal grains in the copper alloy is 5 to 30 ?m; the area ratio of the crystal grains having crystal grain sizes not less than twice the average crystal grain size is not less than 3%; and the ratio of the area of cube orientation grains to the area of the crystal grains having crystal grain sizes not less than twice the average crystal grain size is not less than 50%.Type: ApplicationFiled: November 18, 2011Publication date: June 14, 2012Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hisao SHISHIDO, Shinya Katsura, Yasuhiro Aruga, Katsushi Matsumoto
-
Patent number: 7928541Abstract: A QFN package is provided with a lead frame formed by processing a copper alloy sheet containing 0.01 to 0.50% by mass Fe, 0.01 to 0.20% by mass P, and Cu and inevitable impurities as other components, having a micro Vickers hardness of 150 or above, a uniform elongation of 5% or below and a local elongation of 10% or below, or a copper alloy sheet containing 0.05 to 2% by mass Ni, 0.001 to 0.3% by mass P, 0.005 to 5% by mass Zn, and Cu and inevitable impurities as other components, having a micro Vickers hardness of 150 or above, a uniform elongation of 5% or below and a local elongation of 10% or below. Lead burrs formed during the dicing of the QFN package are short, and a dicing blade used for dicing the QFN package is abraded at a low wear-out rate.Type: GrantFiled: February 2, 2009Date of Patent: April 19, 2011Assignee: Kobe Steel, Ltd.Inventors: Yosuke Miwa, Masayasu Nishimura, Ryoichi Ozaki, Shinya Katsura
-
Publication number: 20090224379Abstract: A QFN package is provided with a lead frame formed by processing a copper alloy sheet containing 0.01 to 0.50% by mass Fe, 0.01 to 0.20% by mass P, and Cu and inevitable impurities as other components, having a micro Vickers hardness of 150 or above, a uniform elongation of 5% or below and a local elongation of 10% or below, or a copper alloy sheet containing 0.05 to 2% by mass Ni, 0.001 to 0.3% by mass P, 0.005 to 5% by mass Zn, and Cu and inevitable impurities as other components, having a micro Vickers hardness of 150 or above, a uniform elongation of 5% or below and a local elongation of 10% or below. Lead burrs formed during the dicing of the QFN package are short, and a dicing blade used for dicing the QFN package is abraded at a low wear-out rate.Type: ApplicationFiled: February 2, 2009Publication date: September 10, 2009Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel Ltd.)Inventors: Yosuke MIWA, Masayasu Nishimura, Ryoichi Ozaki, Shinya Katsura