Patents Assigned to Mino Ceramic Co., Ltd.
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Patent number: 9789671Abstract: A shock absorbing member 50 having a ceramic bonded body 15 having: a plurality of first sheet-like members 5 each having a ceramic containing 60 mass % or more of boron carbide and each having a thickness of 0.1 to 50 mm; and a bonding layer arranged between the first sheet-like members 5 adjacent to each other, the bonding layer bonding surfaces to be bonded facing each other of the first sheet-like members adjacent to each other, wherein the bonding layer has a bonding material containing at least one metal selected from the group consisting of aluminum, copper, silver, and gold.Type: GrantFiled: February 27, 2013Date of Patent: October 17, 2017Assignee: MINO CERAMIC CO., LTD.Inventors: Takeshi Kumazawa, Kiyoto Sekine, Ayumi Tsujino
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Patent number: 9211600Abstract: A bonded, boron carbide-containing ceramic body includes ceramic members. These ceramic members each contain boron carbide at 2 mass % or higher, and are integrated together via a bonding layer bonded with a bonding material containing at least one metal selected from the group consisting of aluminum, copper, gold and zirconium or integrated together via a bonding layer formed from one of aluminum metal and an aluminum compound and a titanium compound as bonding materials, wherein a bonded part has a strength of 100 MPa or higher. According to this technology, the boron carbide-containing ceramic members can be bonded together with a high strength of 100 MPa or more by a simple process, and further, the bonding is feasible with excellent chemical resistance at the bonded part as needed.Type: GrantFiled: August 30, 2011Date of Patent: December 15, 2015Assignee: MINO CERAMIC CO., LTD.Inventors: Kiyoto Sekine, Takeshi Kumazawa, Hideki Kita, Hideki Hyuga
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Patent number: 8883069Abstract: An aspect of the present invention is to provide an economical production technology for obtaining a dense boron carbide ceramic product without impairment to excellent mechanical properties, which boron carbide ceramics are inherently equipped with, by conducting heating under normal pressure without application of pressure and without needing addition of a large amount of a sintering additive to a raw material or needing any special additive or treatment. The present invention provides a production process in which, upon heating a boron carbide green body under normal pressure without application of pressure after pressing a boron carbide powder material to obtain the boron carbide green body, the boron carbide green body is heated with one of a powder, green body or sintered body, which contains at least one of aluminum and silicon, being disposed in a furnace.Type: GrantFiled: February 28, 2012Date of Patent: November 11, 2014Assignee: Mino Ceramic Co., Ltd.Inventors: Takeshi Kumazawa, Yoshiyuki Sensui, Toru Honda
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Publication number: 20140123844Abstract: A shock absorbing member 50 having a ceramic bonded body 15 having: a plurality of first sheet-like members 5 each having a ceramic containing 60 mass % or more of boron carbide and each having a thickness of 0.1 to 50 mm; and a bonding layer arranged between the first sheet-like members 5 adjacent to each other, the bonding layer bonding surfaces to be bonded facing each other of the first sheet-like members adjacent to each other, wherein the bonding layer has a bonding material containing at least one metal selected from the group consisting of aluminum, copper, silver, and gold.Type: ApplicationFiled: February 27, 2013Publication date: May 8, 2014Applicant: MINO CERAMIC CO., LTD.Inventors: Takeshi Kumazawa, Kiyoto Sekine, Ayumi Tsujino
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Publication number: 20130157835Abstract: A bonded, boron carbide-containing ceramic body includes ceramic members. These ceramic members each contain boron carbide at 2 mass % or higher, and are integrated together via a bonding layer bonded with a bonding material containing at least one metal selected from the group consisting of aluminum, copper, gold and zirconium or integrated together via a bonding layer formed from one of aluminum metal and an aluminum compound and a titanium compound as bonding materials, wherein a bonded part has a strength of 100 MPa or higher. According to this technology, the boron carbide-containing ceramic members can be bonded together with a high strength of 100 MPa or more by a simple process, and further, the bonding is feasible with excellent chemical resistance at the bonded part as needed.Type: ApplicationFiled: August 30, 2011Publication date: June 20, 2013Applicant: MINO CERAMIC CO., LTD.Inventors: Kiyoto Sekine, Takeshi Kumazawa, Hideki Kita, Hideki Hyuga
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Patent number: 7301259Abstract: A vibration type driving apparatus capable of inhibiting wear in an elastic member and a contact member is provided. The vibration type driving apparatus is a vibration type driving apparatus relatively driving an elastic member given vibrations by an electric-mechanical energy conversion element and a contact member contacting the elastic member, wherein at least one of the elastic member and the contact member is formed by aluminum oxide ceramics containing 5 wt % to 40 wt % of zirconium oxide.Type: GrantFiled: August 29, 2005Date of Patent: November 27, 2007Assignees: Canon Kabushiki Kaisha, Mino Ceramic Co., Ltd.Inventors: Yutaka Maruyama, Kiyoshi Nitto, Takeshi Kumazawa, Naoki Soumiya
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Publication number: 20060043845Abstract: A vibration type driving apparatus capable of inhibiting wear in an elastic member and a contact member is provided. The vibration type driving apparatus is a vibration type driving apparatus relatively driving an elastic member given vibrations by an electric-mechanical energy conversion element and a contact member contacting the elastic member, wherein at least one of the elastic member and the contact member is formed by aluminum oxide ceramics containing 5 wt % to 40 wt % of zirconium oxide.Type: ApplicationFiled: August 29, 2005Publication date: March 2, 2006Applicants: CANON KABUSHIKI KAISHA, MINO CERAMIC CO., LTD.Inventors: Yutaka Maruyama, Kiyoshi Nitto, Takeshi Kumazawa, Naoki Soumiya