Patents by Inventor Koichiro Akari
Koichiro Akari 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: 20230145251Abstract: Provided is a hard coating film having excellent sand abrasion resistance. The present invention relates to a hard coating film (20) including a nitride containing Al and Cr as main components, the hard coating film (20) having a thickness of 6 ?m or more.Type: ApplicationFiled: March 12, 2021Publication date: May 11, 2023Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventor: Koichiro AKARI
-
Patent number: 11174546Abstract: Provided is a film formation method that includes: an etching step of etching the surface of the substrate by bringing inert gas ions into collision with the surface of the substrate, the inert gas ions generated in a chamber accommodating the substrate; an implantation step of bringing inert gas ions into collision with metal particles deposited on the surface of the substrate to thereby hit the metal particles into the surface of the substrate while bringing the inert gas ions into collision with a metal target to thereby cause the metal particles to sputter out of the metal target and depositing the metal particles on the surface of the substrate etched in the etching step; and a film formation step of forming the film on the surface of the substrate into which the metal particles have been hit in the implantation step.Type: GrantFiled: October 3, 2018Date of Patent: November 16, 2021Assignee: Kobe Steel, Ltd.Inventors: Satoshi Hirota, Koichiro Akari
-
Publication number: 20210351015Abstract: Provided are a nitriding apparatus and a method of nitriding, which are capable of suppressing generation of a compound layer by accurately measuring temperature of an object to be treated by nitriding. A nitriding apparatus includes a chamber, a gas supplying unit, a support, a plasma source, a heater, a thermocouple wire including a temperature measuring section, an accommodating member, a power supply for an object to be treated, and a treatment condition control unit. The accommodating member internally accommodates the thermocouple wire to cover the temperature measuring section, while being insulated from the thermocouple wire. The power supply for an object to be treated applies a predetermined voltage to an object to be treated and the housing member so that the object to be treated and the accommodating member are set to an identical potential on the negative side.Type: ApplicationFiled: September 26, 2019Publication date: November 11, 2021Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Maiko ABE, Koichiro AKARI
-
Publication number: 20210164089Abstract: Provided is a film formation method that includes: an etching step of etching the surface of the substrate by bringing inert gas ions into collision with the surface of the substrate, the inert gas ions generated in a chamber accommodating the substrate; an implantation step of bringing inert gas ions into collision with metal particles deposited on the surface of the substrate to thereby hit the metal particles into the surface of the substrate while bringing the inert gas ions into collision with a metal target to thereby cause the metal particles to sputter out of the metal target and depositing the metal particles on the surface of the substrate etched in the etching step; and a film formation step of forming the film on the surface of the substrate into which the metal particles have been hit in the implantation step.Type: ApplicationFiled: October 3, 2018Publication date: June 3, 2021Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Satoshi HIROTA, Koichiro AKARI
-
Patent number: 9695514Abstract: A laminated coating film according to the present invention comprises at least one coating film (A) and at least one coating film (B) laminated on each other and has excellent abrasion resistance. [Coating film (A)] The compositional formula is (M1-aSia)(BxCyN1-x-y) (wherein M represents at least one element selected from the group consisting of a Group-4 element, a Group-5 element, a Group-6 element and Al; and a, x and y respectively represent the atomic ratios of Si, B and C), wherein a, x and y respectively fulfill the formulae: 0.05?a?0.35, 0?x?0.15 and 0?y?0.5. [Coating film (B)] The compositional formula is L(BxCyN1-x-y) (wherein L represents at least one element selected from the group consisting of W, Mo and V; and x and y respectively represent the atomic ratios of B and C), wherein x and y respectively fulfill the formulae: 0?x?0.15 and 0?y?0.5.Type: GrantFiled: January 24, 2014Date of Patent: July 4, 2017Assignee: Kobe Steel, Ltd.Inventors: Maiko Abe, Kenji Yamamoto, Koichiro Akari
-
Publication number: 20150361562Abstract: A laminated coating film according to the present invention comprises at least one coating film (A) and at least one coating film (B) laminated on each other and has excellent abrasion resistance. [Coating film (A)] The compositional formula is (M1-aSia)(BxCyN1-x-y) (wherein M represents at least one element selected from the group consisting of a Group-4 element, a Group-5 element, a Group-6 element and Al; and a, x and y respectively represent the atomic ratios of Si, B and C), wherein a, x and y respectively fulfil the formulae: 0.05?a?0.35, 0?x?0.15 and 0?y?0.5. [Coating film (B)] The compositional formula is L(BxCyN1-x-y) (wherein L represents at least one element selected from the group consisting of W, Mo and V; and x and y respectively represent the atomic ratios of B and C), wherein x and y respectively fulfil the formulae: 0?x?0.15 and 0?y?0.5.Type: ApplicationFiled: January 24, 2014Publication date: December 17, 2015Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.)Inventors: Maiko ABE, Kenji YAMAMOTO, Koichiro AKARI
-
Patent number: 9121548Abstract: A sliding member includes: a substrate which has a sliding surface sliding under the presence of lubricating oil; and a film which is fixed to at least a part of the sliding surface. The film contains carbon (C), titanium (Ti), and boron (B), is obtained by repeatedly and alternately layering a first layer containing amorphous carbon as a principal component and a second layer containing C and Ti as principal components, and has hardness of 18 GPa or more.Type: GrantFiled: April 12, 2012Date of Patent: September 1, 2015Assignee: Kobe Steel, Ltd.Inventors: Hiroyuki Mori, Munehisa Matsui, Keiji Hayashi, Yoshio Fuwa, Takatoshi Shinyoshi, Satoshi Jinno, Kenji Shimoda, Satoshi Hirota, Koichiro Akari, Hirotaka Ito
-
Patent number: 8808858Abstract: A diamondlike carbon hard multilayer formed film body comprises a substrate, a diamondlike carbon film mainly composed of diamondlike carbon, and an intermediate layer between the substrate and the diamondlike carbon film. The diamondlike carbon film is composed of, in order from the substrate side, a first diamondlike carbon film and a second diamondlike carbon film. The surface hardness of the first diamondlike carbon film is within the range from not less than 10 GPa to not more than 40 GPa based on nanoindentation test, and the surface hardness of the second diamondlike carbon film is within the range from more than 40 GPa to not more than 90 GPa based on nanoindentation test.Type: GrantFiled: June 15, 2009Date of Patent: August 19, 2014Assignee: Kobe Steel, Ltd.Inventors: Koichiro Akari, Akitoshi Oota
-
Publication number: 20140038868Abstract: A sliding member includes: a substrate which has a sliding surface sliding under the presence of lubricating oil; and a film which is fixed to at least a part of the sliding surface. The film contains carbon (C), titanium (Ti), and boron (B), is obtained by repeatedly and alternately layering a first layer containing amorphous carbon as a principal component and a second layer containing C and Ti as principal components, and has hardness of 18 GPa or more.Type: ApplicationFiled: April 12, 2012Publication date: February 6, 2014Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hiroyuki Mori, Munehisa Matsui, Keiji Hayashi, Yoshio Fuwa, Takatoshi Shinyoshi, Satoshi Jinno, Kenji Shimoda, Satoshi Hirota, Koichiro Akari, Hirotaka Ito
-
Patent number: 8621757Abstract: In a cutting edge of a razor blade, a non-nitrided layer containing Ti, Al, and Cr formed on opposite surfaces of a base plate as a portion of a coating layer. A remaining layer containing Ti, Al, Cr, and N formed on opposite surfaces of the non-nitrided layer as a portion of a nitrided layer of the coating layer. A surface layer containing Ti, Al, Cr, and N formed on opposite surfaces of the remaining layer as a portion of the nitrided layer of the coating layer. A fluororesin layer formed on opposite surfaces of the surface layer with a bonding layer containing Cr and Al in between. The coating layer further improves the cutting edge, enhances cutting performance of the cutting edge, and maintains the enhanced cutting performance to improve the durability of the cutting edge.Type: GrantFiled: March 27, 2008Date of Patent: January 7, 2014Assignee: Kai R&D Center Co., Ltd.Inventors: Koichiro Akari, Hiroshi Ohtsubo
-
Publication number: 20100024222Abstract: In a cutting edge of a razor blade, a non-nitrided layer containing Ti, Al, and Cr is formed on opposite surfaces of a base plate as a portion of a coating layer. A remaining layer containing Ti, Al, Cr, and N is formed on opposite surfaces of the non-nitrided layer as a portion of a nitrided layer of the coating layer. A surface layer containing Ti, Al, Cr, and N is formed on opposite surfaces of the remaining layer as a portion of the nitrided layer of the coating layer. A fluororesin layer is formed on opposite surfaces of the surface layer with a bonding layer containing Cr and Al in between. The coating layer including the non-nitrided layer and the nitrided layer further improves the cutting edge, enhances cutting performance of the cutting edge, and maintains the enhanced cutting performance to improve the durability of the cutting edge.Type: ApplicationFiled: March 27, 2008Publication date: February 4, 2010Inventors: Koichiro Akari, Hiroshi Ohtsubo
-
Publication number: 20090250338Abstract: A diamondlike carbon hard multilayer formed film body comprises a substrate, a diamondlike carbon film mainly composed of diamondlike carbon, and an intermediate layer between the substrate and the diamondlike carbon film. The diamondlike carbon film is composed of, in order from the substrate side, a first diamondlike carbon film and a second diamondlike carbon film. The surface hardness of the first diamondlike carbon film is within the range from not less than 10 GPa to not more than 40 GPa based on nanoindentation test, and the surface hardness of the second diamondlike carbon film is within the range from more than 40 GPa to not more than 90 GPa based on nanoindentation test.Type: ApplicationFiled: June 15, 2009Publication date: October 8, 2009Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Koichiro AKARI, Akitoshi OOTA
-
Publication number: 20070054125Abstract: A diamondlike carbon hard multilayer formed film body comprises a substrate, a diamondlike carbon film mainly composed of diamondlike carbon, and an intermediate layer between the substrate and the diamondlike carbon film. The diamondlike carbon film is composed of, in order from the substrate side, a first diamondlike carbon film and a second diamondlike carbon film. The surface hardness of the first diamondlike carbon film is within the range from not less than 10 GPa to not more than 40 GPa based on nanoindentation test, and the surface hardness of the second diamondlike carbon film is within the range from more than 40 GPa to not more than 90 GPa based on nanoindentation test.Type: ApplicationFiled: August 28, 2006Publication date: March 8, 2007Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Koichiro AKARI, Akitoshi Oota
-
Patent number: 6749730Abstract: An object of the present invention is to alter the shape of the magnetic field with ease in the state of auxiliary magnet poles being disposed in a sputtering apparatus. In a sputtering apparatus according to the present invention, one or more magnetron type sputtering evaporation sources 3 and one or more auxiliary magnet poles 9 are disposed in a chamber 1 so as to surround a solid substance 2 to be deposited, wherein an angle changing mechanism for changing the alignment angle of the auxiliary magnet poles 9 relative to the solid substance 2 to be deposited in order to alter the shape of the magnetic field formed by the magnetron type sputtering evaporation sources 3 and the auxiliary magnet poles 9.Type: GrantFiled: February 11, 2003Date of Patent: June 15, 2004Assignee: Kobe Steel, Ltd.Inventors: Toshimitsu Kohara, Koichiro Akari
-
Patent number: 6716540Abstract: A multilayer film formed body comprises an outermost layer comprising a diamondlike carbon film, a substrate comprising an iron material, and an intermediate layer comprising a first layer on the substrate side, and a second layer on the outermost layer side. The first layer comprises at least either metal of Cr and Al, and a second layer comprises an amorphous layer including carbon and at least either metal of Cr and Al. The second layer has a gradient structure where the metal decreases as the position becomes closer to the outermost layer. The hardness of the second layer increases stepwise or continuously as the position becomes closer to the outermost layer. The hardness of the second layer close to the first layer is close to the hardness of the first layer. The hardness of the second layer close to the outermost layer is close to the hardness of the outermost layer.Type: GrantFiled: March 5, 2002Date of Patent: April 6, 2004Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Toshimitsu Kohara, Koichiro Akari, Eiji Iwamura
-
Publication number: 20030155236Abstract: An object of the present invention is to alter the shape of the magnetic field with ease in the state of auxiliary magnet poles being disposed in a sputtering apparatus.Type: ApplicationFiled: February 11, 2003Publication date: August 21, 2003Inventors: Toshimitsu Kohara, Koichiro Akari
-
Publication number: 20020136895Abstract: A multilayer film formed body comprises an outermost layer comprising a diamondlike carbon film, a substrate comprising an iron material, and an intermediate layer comprising a first layer on the substrate side, and a second layer on the outermost layer side. The first layer comprises at least either metal of Cr and Al, and a second layer comprises an amorphous layer including carbon and at least either metal of Cr and Al. The second layer has a gradient structure where the metal decreases as the position becomes closer to the outermost layer. The hardness of the second layer increases stepwise or continuously as the position becomes closer to the outermost layer. The hardness of the second layer close to the first layer is close to the hardness of the first layer. The hardness of the second layer close to the outermost layer is close to the hardness of the outermost layer.Type: ApplicationFiled: March 5, 2002Publication date: September 26, 2002Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd)Inventors: Toshimitsu Kohara, Koichiro Akari, Eiji Iwamura
-
Patent number: 6156170Abstract: This invention provides a magnetron sputtering apparatus for forming a thin film on a substrate by adhering metal atoms or ions evaporated from a magnetron evaporation source to the substrate, which comprises at least one magnetron evaporation source and at least one auxiliary magnetic pole provided on the circumference of the substrate to generate magnetic lines of force surrounding the substrate. According to this invention, only one kind of magnetron magnetic field structure suffices for the magnetron evaporation sources, a desired sealing magnetic field can be formed regardless of the number or arrangement of the magnetron evaporating sources, and the form of the sealing magnetic field can be easily changed.Type: GrantFiled: August 17, 1999Date of Patent: December 5, 2000Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Koichiro Akari, Toshimitsu Kohara
-
Patent number: 5961729Abstract: A vacuum arc evaporation method of disposing a vacuum arc evaporation source and a substrate in a vacuum chamber, and introducing ions generated by arc discharge on the surface of the vacuum arc evaporation source to the substrate by means of magnetic fields, thereby forming a film, wherein the substrate is cleaned before forming the film by generating the arc disc while supplying a gas mixture of a nitrogen gas and an argon gas, a xenon gas, or a gas mixture of nitrogen gas and a xenon gas in the vacuum chamber. A film with improved adhesion and surface roughness can be obtained.Type: GrantFiled: December 18, 1996Date of Patent: October 5, 1999Assignee: Kabushiki Kaisha Kobe Seiko ShoInventor: Koichiro Akari
-
Patent number: 5126030Abstract: Cathodic arc deposition method and apparatus, including an arc evaporation source containing a film forming material. A substrate is arranged on the central axis line of and in front of the evaporation surface of the arc evaporation source. At least one magnet coil is arranged around the central axis line and between the arc evaporation source and the substrate.Type: GrantFiled: December 10, 1990Date of Patent: June 30, 1992Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Hiroshi Tamagaki, Koichiro Akari