Patents by Inventor Yoshihiro Iguchi
Yoshihiro Iguchi 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: 20240117120Abstract: Provided is a curable resin composition for a bonding film that has a high adhesion force to a copper foil with a small surface roughness, maintains a high adhesion force even after HAST, and can also be turned into a cured product superior in dielectric properties. The curable resin composition for a bonding film that is to be bonded to a copper foil, contains: (A) a maleimide compound having at least one dimer acid frame-derived hydrocarbon group per molecule, that is represented by the following formula (1), (2) or (3) wherein A independently represents a tetravalent organic group having a cyclic structure, B independently represents a divalent hydrocarbon group having 6 to 60 carbon atoms and is a hydrocarbon group other than a dimer acid frame-derived hydrocarbon group, D represents a dimer acid frame-derived hydrocarbon group, m, l and n are each 1 to 100; and (B) a catalyst.Type: ApplicationFiled: August 25, 2023Publication date: April 11, 2024Applicant: Shin-Etsu Chemical Co., Ltd.Inventors: Yoshihiro TSUTSUMI, Hiroyuki IGUCHI
-
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
-
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
-
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
-
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
-
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
-
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
-
Patent number: 5391690Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: June 2, 1993Date of Patent: February 21, 1995Assignee: Daicel Chemical Industries,Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5387628Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: September 9, 1993Date of Patent: February 7, 1995Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5278279Abstract: A process for producing a (co)polycarbonate or a (co)polyestercarbonate having a high molecular weight and excellent hue, heat stability and mechanical properties by reacting a dihydroxyl compound with a diester of carbonic acid and/or a diester of dicarbonic acid in the presence of a transesterification catalyst, wherein at least part of the reaction process is conducted in the presence of a specified organic phosphorus compound, or, in the presence of a specified organic phosphorus compound and a hindered phenol compound. A (co)polycarbonate or (co)polyester-carbonate composition having excellent hue, heat stability and mechanical properties, comprising a (co)polycarbonate and/or a (co)polyestercarbonate and, a specified organic phosphorus compound, or, a specified organic phosphorus compound and a hindered phenol compound.Type: GrantFiled: August 31, 1992Date of Patent: January 11, 1994Assignee: Daicel Chemical Industries, Ltd.Inventors: Tatsuya Kanno, Tsutomu Yamato, Yasuhiro Oshino, Yutaka Fukuda, Yoshihiro Iguchi, Takaaki Kuwana, Toshihiro Matsumoto
-
Patent number: 5168112Abstract: A polycarbonate is produced by melt-polycondensing a dihydric hydroxy compound and a bisarylcarbonate in the presence of 4-(4-methyl-1-piperidinyl)-pyridine, or a salt thereof, as a catalyst. The process of the invention eliminates the use of poisonous phosgene, prevents chloride ions from being incorporated into the product polycarbonate and remains in the reaction system longer to enable the preparation of high-molecular weight polycarbonates.Type: GrantFiled: January 8, 1991Date of Patent: December 1, 1992Assignee: Daicel Chemical Industries, Ltd.Inventors: Mitsuru Ueda, Tatsuya Kanno, Yoshihiro Iguchi, Yasuhiro Oshino
-
Patent number: 5025083Abstract: A polycarbonate is produced by melt-polycondensing (A) a dihydric phenol with a co-monomer selected from the group consisting of (B) bisphenol carbonate, (C) bis(2,4,6-trichlorophenyl) carbonate (D) bis(2,4,-dichlorophenyl) carbonate and (E) bis(2-cyanophenyl) carbonate in the presence of a catalyst selected from among electron-donating amine compounds and salts thereof. The process of the invention saves the use of phosgene which is poisonous and prevents the resulting polycarbonate from incorporation thereinto of chlorine ions.Type: GrantFiled: February 2, 1990Date of Patent: June 18, 1991Assignee: Daicel Chemical Industries, Ltd.Inventors: Mitsuru Ueda, Tatsuya Kanno, Yoshihiro Iguchi, Yasuhiro Oshino