Patents by Inventor Naoki Kohyama
Naoki Kohyama 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: 20230366068Abstract: A metal wire has a total elongation of at least 5% and at most 16%; a tensile strength of at least 1600 MPa and at most 2400 MPa; and a diameter of less than 40 ?m.Type: ApplicationFiled: October 4, 2021Publication date: November 16, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomohiro KANAZAWA, Yoshihiro KODAMA, Naoki KOHYAMA, Tatsuya TANIWAKI, Kenshi TSUJI, Tomohiro SAWA, Tetsuya NAKAAZE
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Patent number: 11761065Abstract: A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 ?m, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire is greater than or equal to 250×exp(?0.026×D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.Type: GrantFiled: April 13, 2020Date of Patent: September 19, 2023Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro Kanazawa, Naoki Kohyama, Yoshihiro Iguchi, Yui Nakai
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Publication number: 20230227951Abstract: A tungsten wire that contains tungsten or a tungsten alloy is provided. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm. The tungsten wire has a tensile strength of at least 3900 MPa. The tungsten wire has a diameter of at least 100 ?m and at most 225 ?m.Type: ApplicationFiled: May 26, 2021Publication date: July 20, 2023Inventors: Tomohiro KANAZAWA, Naoki KOHYAMA, Kenshi TSUJI, Yoshihiro IGUCHI, Yui NAKAI, Tetsuya NAKAAZE
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Publication number: 20230002867Abstract: A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 ?g per 1 g of the metal wire.Type: ApplicationFiled: December 4, 2020Publication date: January 5, 2023Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Akitoshi KASAHARA, Naoki KOHYAMA, Tomohiro KANAZAWA, Kenshi TSUJI, Yoshiyuki KITA, Atsushi SHIMADA, Yuuki SASAGAWA
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Publication number: 20220220591Abstract: A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 ?m, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire (10) is greater than or equal to 250×exp(?0.026×D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.Type: ApplicationFiled: April 13, 2020Publication date: July 14, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomohiro KANAZAWA, Naoki KOHYAMA, Yoshihiro IGUCHI, Yui NAKAI
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Publication number: 20220098708Abstract: A tungsten wire contains tungsten or a tungsten alloy. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 76 nm. The tungsten wire has a tensile of at least 4800 MPa, and a diameter of at most 100 ?m.Type: ApplicationFiled: November 18, 2019Publication date: March 31, 2022Applicant: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomohiro KANAZAWA, Yoshihiro IGUCHI, Naoki KOHYAMA, Atsushi SHIMADA, Kenshi TSUJI, Yui NAKAI
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Patent number: 10967447Abstract: A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 ?m. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 ?m.Type: GrantFiled: January 24, 2019Date of Patent: April 6, 2021Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro Kanazawa, Naoki Kohyama, Yoshihiro Iguchi, Yuuki Sasagawa, Tetsuji Shibata, Toshiyuki Tani
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Patent number: 10722962Abstract: A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A nickel plating layer is provided over the metal wire. An adhesion layer is provided at an interface between the metal wire and the nickel plating layer. The adhesion layer contains nickel and tungsten. A plurality of abrasive particles are provided at a surface of the nickel plating layer.Type: GrantFiled: May 9, 2018Date of Patent: July 28, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro Kanazawa, Tetsuji Shibata, Kazushige Sugita, Hiroshi Gouda, Naoki Kohyama
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Patent number: 10723042Abstract: A saw wire includes a metal wire containing rhenium-tungsten alloy. A rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten, an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa, a tensile strength of the metal wire is at least 3500 MPa, and a diameter of the metal wire is at most 60 ?m.Type: GrantFiled: February 26, 2018Date of Patent: July 28, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tomohiro Kanazawa, Tetsuji Shibata, Kazushige Sugita, Hiroshi Gouda, Naoki Kohyama
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Publication number: 20190232404Abstract: A metal wire containing tungsten is provided. A tungsten content of the metal wire is at least 90 wt %. A tensile strength of the metal wire is at least 4000 MPa. An elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa. A diameter of the metal wire is at most 60 ?m. An average crystal grain size of the metal wire in a cross-section orthogonal to an axis of the metal wire is at most 0.20 ?m.Type: ApplicationFiled: January 24, 2019Publication date: August 1, 2019Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro KANAZAWA, Naoki KOHYAMA, Yoshihiro IGUCHI, Yuuki SASAGAWA, Tetsuji SHIBATA, Toshiyuki TANI
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Publication number: 20180326519Abstract: A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 ?m. A tensile strength of the metal wire is at least 3500 MPa. A diameter of the metal wire is at most 60 ?m.Type: ApplicationFiled: May 9, 2018Publication date: November 15, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro KANAZAWA, Masato WADA, Takayuki IMAI, Tetsuji SHIBATA, Kazushige SUGITA, Naoki KOHYAMA, Hiroshi GOUDA, Yoshitaka MIZUGUCHI
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Publication number: 20180326517Abstract: A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing at least one of tungsten and a tungsten alloy. A nickel plating layer is provided over the metal wire. An adhesion layer is provided at an interface between the metal wire and the nickel plating layer. The adhesion layer contains nickel and tungsten. A plurality of abrasive particles are provided at a surface of the nickel plating layer.Type: ApplicationFiled: May 9, 2018Publication date: November 15, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LT D.Inventors: Tomohiro KANAZAWA, Tetsuji SHIBATA, Kazushige SUGITA, Hiroshi GOUDA, Naoki KOHYAMA
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Publication number: 20180326518Abstract: A saw wire and various methods of use and manufacture are provided. The saw wire includes a metal wire containing one of tungsten and a tungsten alloy. A surface roughness Ra of the metal wire is at most 0.15 ?m. A diameter of the metal wire is at most 60 ?m.Type: ApplicationFiled: May 9, 2018Publication date: November 15, 2018Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tomohiro KANAZAWA, Masato WADA, Takayuki IMAI, Tetsuji SHIBATA, Kazushige SUGITA, Naoki KOHYAMA, Hiroshi GOUDA, Yoshitaka MIZUGUCHI
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Publication number: 20180281231Abstract: A saw wire includes a metal wire containing rhenium-tungsten alloy. A rhenium content of the metal wire is at least 0.1 wt % and at most 10 wt % with respect to a total weight of rhenium and tungsten, an elastic modulus of the metal wire is at least 350 GPa and at most 450 GPa, a tensile strength of the metal wire is at least 3500 MPa, and a diameter of the metal wire is at most 60 ?m.Type: ApplicationFiled: February 26, 2018Publication date: October 4, 2018Inventors: Tomohiro KANAZAWA, Tetsuji SHIBATA, Kazushige SUGITA, Hiroshi GOUDA, Naoki KOHYAMA
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Patent number: 7211955Abstract: A lamp includes a glass bulb 2 with a concave portion 1, a base 7 attached so as to cover at least part of the concave portion, a lead 11 for supplying electrical power with an end section located in the concave portion 1, and lead-free solder 17. The lead free solder 17 is composed mainly of Sn, and further contains, at least, between 5% and 40% inclusive of Sb and between 0% and 10% inclusive of Cu by mass, and has a solidus temperature of at least 235° C.Type: GrantFiled: September 9, 2004Date of Patent: May 1, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Meguro, Tsutomu Koino, Naoki Kohyama
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Publication number: 20060061281Abstract: A lamp includes a glass bulb 2 with a concave portion 1, a base 7 attached so as to cover at least part of the concave portion, a lead 11 for supplying electrical power with an end section located in the concave portion 1, and lead-free solder 17. The lead free solder 17 is composed mainly of Sn, and further contains, at least, between 5% and 40% inclusive of Sb and between 0% and 10% inclusive of Cu by mass, and has a solidus temperature of at least 235° C.Type: ApplicationFiled: September 9, 2004Publication date: March 23, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Takeshi Meguro, Tsutomu Koino, Naoki Kohyama
