586 patents
Page 23 of 30
Utility
High strength electric resistance welded steel pipe and method for producing high strength electric resistance welded steel pipe
4 May 20
Electric resistance welded steel pipe securing the high strength and high toughness demanded from oil well pipe in recent years.
Tetsuo Ishitsuka, Shuji Iwamoto, Takashi Tsusue, Shunichi Kobayashi, Osamu Yoshida, Hideto Kawano
Filed: 14 Feb 16
Utility
Tire
27 Apr 20
A tire having a rubber body in which a steel cord is embedded, wherein a layer composed of ZnxCoyO is formed at the interface between the steel cord and the rubber body and x+y is 5/6 or more and 1 or less.
Tetsuya Nakajima, Kenichi Yamashita, Takashi Tokuyama, Shinei Takamura, Masumi Suzuki, Koji Fujisawa
Filed: 12 Oct 16
Utility
Method for producing a rifled tube
27 Apr 20
Takashi Nakashima, Atsuro Iseda, Takeshi Miki, Shunichi Otsuka
Filed: 23 Nov 15
Utility
Mold for continuous casting
27 Apr 20
The primary object of the present invention is to provide a mold for continuous casting including a temperature detection unit which can detect the temperature of a copper plate of the mold with high precision, and can be easily inserted into and pulled out of the copper plate.
Tatsuro Honda, Nozomu Yoshihiro, Shinichi Fukunaga, Takeshi Okawa
Filed: 7 Apr 16
Utility
Vehicle rear portion structure
27 Apr 20
Yoshiaki Nakazawa, Ryuichi Nishimura
Filed: 5 Jan 17
Utility
Cooling apparatus and cooling method for steel material
20 Apr 20
According to the present invention, there is provided a cooling apparatus for a steel material in which one portion in a longitudinal direction of an elongated steel material (10) is heated while the steel material is fed in the longitudinal direction in a state where one end portion of the steel material is gripped, and the one end portion is moved in a two-dimensional or three-dimensional direction so as to form the steel material into a predetermined shape including a bent portion and thereafter to cool a heated portion including the bent portion.
Yoshihiro Serizawa, Akihiro Sakamoto, Masahito Tasaka, Naoaki Shimada, Ryuji Hamada, Hideki Matsuda, Norimasa Yamasaki
Filed: 4 Oct 15
Utility
Blank, formed article, die assembly, and method for producing blank
20 Apr 20
A sheet-shaped blank (10) for press forming is produced by shearing a metal sheet (30).
Takashi Matsuno, Akira Egami
Filed: 9 Dec 14
Utility
Heat treatment apparatus, heat treatment method for steel workpiece, and hot bending method for steel workpiece
20 Apr 20
A heat treatment apparatus of one aspect of the present disclosure includes: a feed device that feeds a heat treatment workpiece downstream in a feed direction along a heat treatment workpiece pass-line; a heating device that includes a heating coil disposed downstream of the feed device in the feed direction and encircling the pass-line; a cooling device that is disposed adjacent to the heating coil, downstream of the heating coil in the feed direction, and encircling the pass-line; and a gas supply device that is disposed upstream of the heating coil in the feed direction, directly connected to the heating coil and encircling the pass-line, and that includes a plurality of gas compartments configured by internally partitioning the gas supply device in the feed direction.
Kazuo Uematsu, Akihiro Sakamoto, Hiroaki Kubota
Filed: 27 Mar 17
Utility
Threaded joint for pipes
20 Apr 20
In a threaded joint for pipes constituted by a pin and a box, each having a contact surface comprising a threaded portion and an unthreaded metal contact portion, the contact surface of the pin has a solid corrosion protective, preferably transparent coating based on a UV-curable resin and the contact surface of the box has a solid lubricating coating having plastic or viscoplastic rheological behavior which is preferably formed by the hot melt technique from a composition comprising a thermoplastic polymer, a wax, a metal soap, a corrosion inhibitor, a water-insoluble liquid resin, and a solid lubricant.
Kunio Goto, Takayuki Kamimura, Masaru Takahashi, Keishi Matsumoto, Michihiko Iwamoto, Ryuichi Imai, Stephanie Rai
Filed: 1 Nov 15
Utility
Torsion beam manufacturing method and torsion beam manufacturing apparatus
13 Apr 20
This torsion beam manufacturing method is a method of manufacturing a torsion beam that includes a uniformly shaped closed cross-sectional portion of which a cross section orthogonal to a longitudinal direction is a closed cross section having a substantial V-shape or a substantial U-shape at any position in the longitudinal direction, and a shape changing portion which has a connection region leading to the uniformly shaped closed cross-sectional portion and including a closed cross section having a shape different from the shape of the closed cross section of the uniformly shaped closed cross-sectional portion.
Keinosuke Iguchi, Masaaki Mizumura
Filed: 13 Mar 17
Utility
Carbon separator for solid polymer fuel cell, solid polymer fuel cell, and solid polymer fuel cell stack
13 Apr 20
A carbon separator for a solid polymer fuel cell is provided that includes a core material made of steel, and a carbon layer.
Yoshio Tarutani
Filed: 19 Sep 16
Utility
Exhaust gas treatment method and exhaust gas treatment facility
6 Apr 20
An exhaust gas treatment method includes: burning a combustible component in exhaust gas by causing the exhaust gas, which is produced in an electric furnace, to flow into a slag holding furnace and supplying oxygen-containing gas into the slag holding furnace; causing the burned exhaust gas to flow from the slag holding furnace to a suction device through an exhaust gas pipe; adjusting an internal pressure of the electric furnace by introducing external air into the exhaust gas pipe through an opening portion provided in the middle of the exhaust gas pipe; and changing an area of the opening portion depending on a variation in the internal pressure of the electric furnace by using an opening area changing unit provided in the opening portion.
Kazuki Yoshida, Toshiya Harada, Takashi Arai
Filed: 23 Jul 14
Utility
Grain-oriented electrical steel sheet causing low core loss and low magnetostriction
6 Apr 20
A grain-oriented electrical steel sheet includes: a base steel sheet; a primary film formed on a surface of the base steel sheet; and a tension insulation coating formed on a surface of the primary film, in which a magnetic domain control is performed by irradiating the tension insulation coating with a laser from above.
Satoshi Arai, Hideyuki Hamamura, Kenichi Murakami, Hiroyasu Fujii, Hideyuki Kobayashi, Norikazu Fujii, Masato Mizokami
Filed: 7 May 15
Utility
Mechanical joining apparatus and mechanical joining method
30 Mar 20
Provided is a mechanical joining apparatus enabling reduction of breakage of the area around a rivet of a joint obtained by riveting, the apparatus comprising a punch and die, blank holder, first power device, second power device and cooling device, wherein the first power device is configured to start supply of current through the holder and die so as to raise the temperature of the sheets before the punch drives in the rivet, the second power device is configured to start supply of current through the punch and die so as to supply current through and heat treat the rivet after the punch drives in the rivet, and the cooling device is connected to the punch and is configured to cool the rivet after the rivet is heat treated.
Seiji Furusako, Tohru Okada, Yasunobu Miyazaki, Fuminori Watanabe, Yoshiaki Nakazawa
Filed: 30 Jun 16
Utility
Method for producing metal sheet with raised lines, metal sheet with raised lines, and structural component
30 Mar 20
A method for producing a metal sheet with raised lines uses a rolling mill including roll stands.
Hitoshi Nikaido, Toru Yonebayashi, Koichi Sato, Teruo Ito, Daiki Kamada
Filed: 6 Oct 15
Utility
Method of manufacturing press-formed product, and press-formed product
30 Mar 20
The present invention provides a method of manufacturing a press-formed product.
Eiji Isogai, Nobusato Kojima, Riki Okamoto, Yutaka Mikazuki
Filed: 29 Sep 15
Utility
Method of producing molded product and molded product
30 Mar 20
The method includes treating a metal sheet having a bcc structure and a surface satisfying conditions (a) or (b), molding the metal sheet to cause plane strain tensile deformation and biaxial tensile deformation, and allowing at least one part of the metal sheet to have a sheet thickness decrease rate of from 10% to 30%.
Masahiro Kubo, Yoshiaki Nakazawa, Hiroshi Yoshida
Filed: 29 Nov 16
Utility
Power supply device, joining system, and electric processing method
30 Mar 20
There is provided a power supply device that supplies an output current to an electric processing device which performs electric processing on workpieces.
Fuminori Watanabe, Kazuhiko Fukutani, Seiji Furusako, Chisato Yoshinaga, Tohru Okada
Filed: 10 Dec 15
Utility
Grain-oriented electrical steel sheet
30 Mar 20
A grain-oriented electrical steel sheet includes a steel layer and an insulation coating arranged in directly contact with the steel layer thereon.
Hiroyoshi Yashiki, Kenichi Murakami, Nobusato Morishige, Hirotoshi Tada, Yoshiaki Natori
Filed: 12 Aug 15
Utility
Electrical steel sheet
30 Mar 20
An electrical steel sheet (1) includes a base material (2) of electrical steel, and an insulating film (3) formed on a surface of the base material (2).
Masaru Takahashi, Shuichi Yamazaki, Kazutoshi Takeda, Hiroyasu Fujii
Filed: 20 Dec 15