Patents by Inventor Tetsuji Kuse
Tetsuji Kuse 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: 11976344Abstract: A Cu-based alloy powder is provided that is suitable for a process involving rapid-melting and rapid-solidification and can produce a shaped article having superior properties. The powder is made of a Cu-based alloy. The Cu-based alloy includes 0.1 to 5.0 mass % of at least one element M selected from V, Fe, Zr, Nb, Hf, and Ta. The balance in the alloy is Cu and inevitable impurities. The powder has a ratio D50/TD of a mean particle diameter D50 (?m) to a tap density TD (Mg/m3) in a range of 0.2×10?5·m4/Mg to 20×10?5·m4/Mg.Type: GrantFiled: November 6, 2018Date of Patent: May 7, 2024Assignee: Sanyo Special Steel Co., Ltd.Inventors: Tetsuji Kuse, Soichiro Maeda, Yuichi Nagatomi
-
Publication number: 20220349029Abstract: Provided is a Cu-based alloy powder that is suitable for a process involving rapid melting and rapid solidification and that can provide a shaped object superior in characteristics. The powder is composed of a Cu-based alloy, which contains an element M being one or more elements selected from Cr, Fe, Ni, Zr, and Nb: 0.1% by mass or more and 10.0% by mass or less, Si: more than 0% by mass and 0.20% by mass or less, P: more than 0% by mass and 0.10% by mass or less, and S: more than 0% by mass and 0.10% by mass or less, the balance being Cu and inevitable impurities. This powder has a ratio (D50/TD) of the average particle diameter D50 (?m) thereof to the tap density TD (Mg/m3) is 0.2×10?5·m4/Mg or more and 20×10?5·m4/Mg or less, and has a sphericity of 0.80 or more and 0.95 or less.Type: ApplicationFiled: July 17, 2020Publication date: November 3, 2022Inventors: Tetsuji Kuse, Yoshikazu Aikawa, Yuichi Nagatomi
-
Patent number: 11430588Abstract: In order to provide a soft magnetic flaky powder having high electrical resistance and high corrosion resistance, and a magnetic sheet including the same, the present invention provides a soft magnetic flaky powder, including a plurality of soft magnetic flaky particles. Each of the plurality of soft magnetic flaky particles contains an Fe-based alloy flaky particle and a coating layer formed on a surface of the Fe-based alloy flaky particle. The coating layer contains one or two or more components selected from chromic acid and a hydrate thereof, and a metal salt of an inorganic acid and a hydrate thereof. The inorganic acid is selected from sulfuric acid, nitric acid, chromic acid, phosphoric acid, hydrofluoric acid and acetic acid. The metal salt is selected from a Na salt, an Al salt, a Ti salt, a Cr salt, a Ni salt, a Ga salt and a Zr salt. The coating layer has a thickness of 10 nm or more.Type: GrantFiled: December 18, 2017Date of Patent: August 30, 2022Assignee: Sanyo Special Steel Co., Ltd.Inventors: Tetsuji Kuse, Koudai Miura, Toshiyuki Sawada
-
Patent number: 11273490Abstract: Provided is an Fe-based metal powder that is suitable for a process involving rapid melt-quenching and solidification, and that provides a shaped article having superior properties. The metal powder for shaping is made of an Fe-based alloy. The Fe-based alloy contains: Ni in an amount of 15.0% to 21.0% by mass; Co in an amount of 0% to 10.0% by mass; Mo in an amount of 0% to 7.0% by mass; Ti in an amount of 0.1% to 6.0% by mass; Al in an amount of 0.1% to 3.0% by mass; and the balance composed of Fe and incidental impurities.Type: GrantFiled: October 9, 2018Date of Patent: March 15, 2022Assignee: Sanyo Special Steel Co., Ltd.Inventors: Tetsuji Kuse, Shingo Fukumoto
-
Publication number: 20210230717Abstract: A Cu-based alloy powder is provided that is suitable for a process involving rapid-melting and rapid-solidification and can produce a shaped article having superior properties. The powder is made of a Cu-based alloy. The Cu-based alloy includes 0.1 to 5.0 mass % of at least one element M selected from V, Fe, Zr, Nb, Hf, and Ta. The balance in the alloy is Cu and inevitable impurities. The powder has a ratio D50/TD of a mean particle diameter D50 (?m) to a tap density TD (Mg/m3) in a range of 0.2×10?5·m4/Mg to 20×10?5·m4/Mg.Type: ApplicationFiled: November 6, 2018Publication date: July 29, 2021Inventors: Tetsuji Kuse, Soichiro Maeda, Yuichi Nagatomi
-
Publication number: 20210178467Abstract: Provided is an Fe-based metal powder that is suitable for a process involving rapid melt-quenching and solidification, and that provides a shaped article having superior properties. The metal powder for shaping is made of an Fe-based alloy. The Fe-based alloy contains: Ni in an amount of 15.0% to 21.0% by mass; Co in an amount of 0% to 10.0% by mass; Mo in an amount of 0% to 7.0% by mass; Ti in an amount of 0.1% to 6.0% by mass; Al in an amount of 0.1% to 3.0% by mass; and the balance composed of Fe and incidental impurities.Type: ApplicationFiled: October 9, 2018Publication date: June 17, 2021Inventors: Tetsuji Kuse, Shingo Fukumoto
-
Publication number: 20200391286Abstract: An object of the present invention is to provide: a stainless steel powder which can be used in a powder-shaping method involving a rapid melting process and a rapid cooling process for solidification to produce a shaped article that is less susceptible to solidification cracking; a powder material for producing a shaped article, containing the stainless steel powder; and a method of producing a shaped article using the stainless steel powder, and, to achieve the object, the present invention provides a powder of a stainless steel, including: Cr in an amount of 10.5% by mass or more and 20.0% by mass or less; Ni in an amount of 1.0% by mass or more and 15.0% by mass or less; C, Si, Mn and N in a total amount of 0% by mass or more and 2.0% by mass or less; Mo, Cu and Nb in a total amount of 0% by mass or more and 5.0% by mass or less; and P and S in a total amount of 0% by mass or more and 0.Type: ApplicationFiled: January 9, 2019Publication date: December 17, 2020Inventors: Tetsuji Kuse, Yuichi Nagatomi
-
Patent number: 10804014Abstract: Provided is a flaky soft magnetic powder composed of an Fe—Si—Al alloy containing Si: 5.5 to 10.5 mass %, Al: 4.5 to 8.0 mass %, and Fe and incidental impurities: balance, wherein the flaky powder exhibits a ratio (D50/TD) of 35 to 92 where D50 represents the average particle size (?m) of the powder and TD represents the tap density (Mg/m3) of the powder, and the flaky powder exhibits a coercive force of 239 to 479 A/m as measured under application of a magnetic field in an in-plane direction of the flaky powder. The flaky soft magnetic powder exhibits superior sheet formability and has high magnetic permeability.Type: GrantFiled: February 28, 2017Date of Patent: October 13, 2020Assignee: Sanyo Special Steel Co., Ltd.Inventors: Tetsuji Kuse, Kodai Miura, Fumihiro Maezawa, Toshiyuki Sawada
-
Publication number: 20190326040Abstract: In order to provide a soft magnetic flaky powder having high electrical resistance and high corrosion resistance, and a magnetic sheet including the same, the present invention provides a soft magnetic flaky powder, including a plurality of soft magnetic flaky particles. Each of the plurality of soft magnetic flaky particles contains an Fe-based alloy flaky particle and a coating layer formed on a surface of the Fe-based alloy flaky particle. The coating layer contains one or two or more components selected from chromic acid and a hydrate thereof, and a metal salt of an inorganic acid and a hydrate thereof. The inorganic acid is selected from sulfuric acid, nitric acid, chromic acid, phosphoric acid, hydrofluoric acid and acetic acid. The metal salt is selected from a Na salt, an Al salt, a Ti salt, a Cr salt, a Ni salt, a Ga salt and a Zr salt. The coating layer has a thickness of 10 nm or more.Type: ApplicationFiled: December 18, 2017Publication date: October 24, 2019Inventors: Tetsuji Kuse, Koudai Miura, Toshiyuki Sawada
-
Publication number: 20170256345Abstract: Provided is a flaky soft magnetic powder composed of an Fe—Si—Al alloy containing Si: 5.5 to 10.5 mass %, Al: 4.5 to 8.0 mass %, and Fe and incidental impurities: balance, wherein the flaky powder exhibits a ratio (D50/TD) of 35 to 92 where D50 represents the average particle size (gm) of the powder and TD represents the tap density (Mg/m3) of the powder, and the flaky powder exhibits a coercive force of 239 to 479 A/m as measured under application of a magnetic field in an in-plane direction of the flaky powder. The flaky soft magnetic powder exhibits superior sheet formability and has high magnetic permeability.Type: ApplicationFiled: February 28, 2017Publication date: September 7, 2017Inventors: Tetsuji Kuse, Kodai Miura, Fumihiro Maezawa, Toshiyuki Sawada