586 patents
Page 16 of 30
Utility
Inductance adjusting device
28 Dec 20
Coil surfaces of a first coil (1) and a second coil (3) are parallel in a state of having an interval therebetween.
Yasuhiro Mayumi, Kazuya Tsurusaki, Yohei Eguchi
Filed: 3 Jul 17
Utility
Induction heating device and induction heating method
28 Dec 20
A first coil 110 and a second coil 120 are faced each other across a conductor plate S so that the first coil (110) and the second coil (120) become substantially the same in position in a Y-axis direction.
Kenji Umetsu, Tsutomu Ueki
Filed: 29 Mar 16
Utility
Sn-based alloy plated steel sheet
14 Dec 20
The Sn-based alloy plated steel sheet of this disclosure includes: a steel sheet; a composite plating layer formed on at least one side of the steel sheet and including an Fe—Ni—Sn alloy layer and an island-shaped Sn layer located on the Fe—Ni—Sn alloy layer; and a coating layer formed on the surface of the composite plating layer and containing zirconium oxide and tin oxide, and the composite plating layer contains a predetermined amount of Ni and a predetermined amount of Sn, a content of the zirconium oxide in the coating layer is from 0.2 mg/m2 to 50 mg/m2 in terms of metal Zr amount, and a peak position of binding energy of Sn3d5/2 according to X-ray photoelectron spectroscopy of the tin oxide in the coating layer is 1.6 eV or higher than a peak position of binding energy of the metal Sn.
Shintaro Yamanaka, Shigeru Hirano, Morio Yanagihara, Hirokazu Yokoya
Filed: 23 May 17
Utility
Steel sheet
7 Dec 20
A steel sheet including an inner layer and a hard layer at one or both surfaces of the inner layer wherein the hard layer and the inner layer have predetermined compositions, each hard layer has a thickness of 20 μm or more and ⅖ of the total sheet thickness or less, the hard layer has an average micro-Vickers hardness of 400 HV or more and less than 700 HV, the hard layer has an N amount of 0.02% or less, the inner layer has an average micro-Vickers hardness of 80 HV or more and less than 400 HV, the inner layer has a carbide volume ratio of less than 2.00%, and the hard layer has a nanohardness standard deviation of 2.00 or less is provided.
Kengo Takeda, Riki Okamoto, Katsuya Nakano, Yuya Suzuki, Genki Abukawa
Filed: 19 Feb 18
Utility
Door inner panel and method for manufacturing door inner panel
7 Dec 20
This door inner panel is a door inner panel formed of a metal sheet and includes a first panel portion having a first top sheet portion and a first standing wall portion connected to the first top sheet portion, a second panel portion having a second top sheet portion disposed with a gap with the first top sheet portion of the first panel portion and a second standing wall portion connected to the second top sheet portion, a flange portion connected to the first standing wall portion and the second standing wall portion, and a flat sheet portion disposed between the first panel portion and the second panel portion, the first standing wall portion and the second standing wall portion respectively have a level difference portion, and both ends of the flat sheet portion are integrated with the flange portion or the level difference portions.
Kenichiro Otsuka, Atsushi Ono, Yoshiyuki Kaseda, Yoshiaki Nakazawa
Filed: 15 Mar 17
Utility
Method of manufacturing tooth-shaped component, and tooth-shaped component
7 Dec 20
A method of manufacturing a tooth-shaped component including a process of draw-forming a workpiece so as to obtain a cylindrical container, which has a bottom surface portion and a side surface portion; a diameter-reducing process of reducing the diameter of a particular part in which a tooth tip portion is to be formed in the side surface portion of the cylindrical container, so as to increase the thickness of a corner portion such that an external shape of the corner portion between the bottom surface portion and the side surface portion satisfies the following conditional expression (ΔR+ΔH)≤2t; and a tooth shape-forming process of forming the tooth tip portion in the particular part of the cylindrical container reduced in diameter in the diameter-reducing process, so as to obtain a tooth-shaped component which has the bottom surface portion, the side surface portion, and the tooth tip portion.
Mitsuharu Yamagata, Shuji Yamamoto, Yasushi Tsukano
Filed: 6 Jan 16
Utility
Press-working apparatus, press-working method, and press-molded product
7 Dec 20
Nobuo Yoshikawa, Yasuhiro Ito, Shigeru Yonemura, Tohru Yoshida
Filed: 27 Apr 16
Utility
Structural member and method of production of same
7 Dec 20
A structural member of an integral shaped article using steel sheet having a tensile strength of 590 MPa or more improved in formability, produced using a die or blank holder provided with a space at least at part of a position contacting a blank at the time of pressing it.
Masahiro Saito
Filed: 8 May 17
Utility
Steel sheet for containers, and method for producing steel sheet for containers
30 Nov 20
A steel sheet for containers including a steel sheet, a Sn coated layer that is formed on at least one surface of the steel sheet, and a chemical treatment layer that is formed on the Sn coated layer.
Akira Tachiki, Shigeru Hirano, Yoshiaki Tani, Hirokazu Yokoya, Morio Yanagihara
Filed: 22 Jun 15
Utility
Zinc-based plated steel sheet
30 Nov 20
Yasuaki Kawamura, Koji Akioka, Akihiro Sengoku
Filed: 30 Mar 16
Utility
Coated steel sheet
23 Nov 20
A coated steel sheet including a steel sheet and a coating layer provided on at least part of the surface of the steel sheet, in which the coating layer has a predetermined chemical composition in terms of % by mass; in which the coating layer has a laminar Mg2Sn phase-containing structure in an area fraction of from 5 to 65%, and a structure containing a solid solution of Zn and Al; and the laminar Mg2Sn phase-containing structure is a structure constituted with a Zn phase and a laminar Mg2Sn phase having a thickness of less than 1 μm, and in which the laminar Mg2Sn phase exists dividing the Zn phase into plural regions.
Takuya Mitsunobu
Filed: 15 Mar 18
Utility
Hot forging steel and hot forged product
23 Nov 20
There is provided a hot forging steel including, by mass %, C: more than 0.30% and less than 0.60%, Si: 0.10% to 0.90%, Mn: 0.50% to 2.00%, S: 0.010% to 0.100%, Cr: 0.01% to 1.00%, Al: more than 0.005% and 0.100% or less, N: 0.0030% to 0.0200%, Bi: more than 0.0001% and 0.0050% or less, Ti: 0% or more and less than 0.040%, V: 0% to 0.30%, Ca: 0% to 0.0040%, Pb: 0% to 0.40%, and a remainder including Fe and impurities, in which P and O in the impurities are respectively P: 0.050% or less and O: 0.0050% or less, an expression d+3σ<20 is satisfied, and a presence density of MnS having an equivalent circle diameter of smaller than 2.0 μm is 300 pieces/mm2 or more in a cross section parallel to a rolling direction of a steel.
Akira Shiga, Suguru Yoshida, Manabu Kubota, Hajime Hasegawa, Hideo Mizukami
Filed: 29 Sep 16
Utility
Slag volume evaluation method for molten metal surface
23 Nov 20
A slag volume evaluation method for a molten metal surface includes calculating an approximation curve indicating a correspondence between a thickness of slag and a density parameter in advance by measuring thicknesses of a plurality of pieces of the slag which float on a surface of a molten metal in a container and differ from each other in thickness, and calculating a value of the density parameter which is correlated to a density in a pixel region corresponding to the plurality of pieces of the slag in a captured image of a molten metal surface in the container; and calculating a volume of the slag by calculating and integrating the thickness of the slag for each of pixels constituting the captured image obtained by capturing an image of the molten metal surface which is an evaluation target, according to a value of the density parameter of each of the pixels and the approximation curve.
Tomoyuki Kusunoki, Takahiro Miyazaki
Filed: 5 Dec 17
Utility
Spring steel wire and spring
23 Nov 20
A spring steel wire includes, by mass %, C: 0.40% to 0.75%, Si: 1.00% to 5.00%, Mn: 0.20% to 2.00%, P: 0.0001% to 0.0500%, S: 0.0001% to 0.0500%, Cr: 0.50% to 3.50%, Al: 0.0005% to 0.0500%, N: 0.0020% to 0.0100%, Mo: 0% to 2.00%, V: 0% to 0.50%, W: 0% to 0.50%, Nb: 0% to 0.100%, Ti: 0% to 0.100%, Ca: 0% to 0.0100%, Mg: 0% to 0.0100%, Zr: 0% to 0.1000%, B: 0% to 0.0100%, Cu: 0% to 1.00%, Ni: 0% to 3.00%, and a remainder consisting of Fe and impurities.
Shinya Teramoto, Hiroshi Yarita, Shouichi Suzuki
Filed: 4 Sep 16
Utility
Nitrided part and method of producing same
16 Nov 20
A nitrided part having excellent fatigue strength which has predetermined constituents, has structures comprised of ferrite and pearlite, has ferrite grains with an aspect ratio of a ratio of a long axis direction and short axis direction of 4.5 or more present in the entire region at a depth from the surface of the part where stress is expected to concentrate of (ρ×0.09+0.05) mm or less, and has an average concentration of N of 5000 ppm or more at a surface layer part from the surface down to 200 μm in the depth direction.
Hiroki Narumiya, Takahide Umehara
Filed: 19 Feb 18
Utility
Steel sheet and method for production thereof
16 Nov 20
The present invention provides steel sheet excellent in cold formability and ductility after heat treatment and a method for production thereof.
Kazuo Hikida, Ken Takata, Kengo Takeda, Motonori Hashimoto
Filed: 25 May 16
Utility
Rolled steel bar or rolled wire rod for cold-forged component
16 Nov 20
Naoki Matsui, Yutaka Neishi, Tetsushi Chida, Akihisa Obata, Shoji Hori, Keisuke Chiba
Filed: 12 Nov 15
Utility
Nitrided steel part and method of production of same
16 Nov 20
A nitrided steel part excellent in bending straightening ability and bending fatigue characteristic enabling reduction of size and decrease of weight of parts or enabling demand for high load capacities to be met, using as a material a steel material containing, by mass %, C: 0.2 to 0.6%, Si: 0.05 to 1.5%, Mn: 0.2 to 2.5%, P: 0.025% or less, S: 0.003 to 0.05%, Cr: 0.05 to 0.5%, Al: 0.01 to 0.05%, and N: 0.003 to 0.025%, and having a balance of Fe and impurities, having formed on the steel surface a compound layer of a thickness 3 μm or less comprising iron, nitrogen, and carbon and a hardened layer formed below the compound layer, and having an effective hardened layer depth of 160 to 410 μm.
Takahide Umehara, Masato Yuya, Yoshihiro Daito
Filed: 7 Sep 16
Utility
Surface treated steel sheet for fuel tank
16 Nov 20
Provided is a surface treated steel sheet for a fuel tank, the surface treated steel sheet including: a Zn plated layer or a Zn—Ni alloy plated layer which is formed on at least a surface of the steel sheet to be an inner surface of the fuel tank; and a chromate-free chemical conversion coating layer containing a water-and-oil repellent, the chromate-free chemical conversion coating layer being placed over the Zn plated layer or the Zn—Ni alloy plated layer on the surface to be the inner surface of the fuel tank.
Kiyokazu Ishizuka, Noriyuki Maekawa, Hiroaki Uramoto, Hidetoshi Shindo, Ikuo Kikuchi, Kenichiro Matsumura
Filed: 19 Jan 16
Utility
Rolled steel bar or rolled wire rod for cold-forged component
9 Nov 20
In a rolled steel bar or rolled wire rod for a cold-forged component having a predetermined chemical composition, Y1 represented by Y1=[Mn]×[Cr] and Y2 represented by Y2=0.134×(D/25.4−(0.50×√[C])/(0.50×√[C]) satisfy Y1>Y2, the tensile strength is 750 MPa or less, an internal structure is a ferrite-pearlite structure, and the ferrite fraction in the internal structure is 40% or greater.
Naoki Matsui, Yutaka Neishi, Tetsushi Chida, Akihisa Obata, Shoji Hori, Keisuke Chiba
Filed: 12 Nov 15