Patents by Inventor Hideki Hyuga
Hideki Hyuga 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: 20220125557Abstract: A dental implant body includes a ceramics sintered body, and the ceramics sintered body is a porous body having blind/continuous holes formed from a surface of the ceramics sintered body and walls formed by the blind/continuous holes. The porosity of the blind/continuous holes may be 50±10%. Further, the diameter of the blind/continuous hole may be equal to or greater than 50 ?m and equal to or smaller than 190 ?m.Type: ApplicationFiled: January 10, 2022Publication date: April 28, 2022Inventors: Hikaru Muto, Manabu Fukushima, Hideki Hyuga, Yuichi Yoshizawa
-
Patent number: 9938444Abstract: A method for producing a silicon nitride substrate includes a raw material powder preparation step of preparing a raw material powder containing a silicon powder, a rare earth element compound, and a magnesium compound, wherein, when the amount of silicon in the raw material powder is expressed in terms of a silicon nitride content, the raw material powder contains the rare earth element compound at 1 mol % to 7 mol % in terms of an oxide content and contains the magnesium compound at 8 mol % to 15 mol % in terms of an oxide content; a sheet forming step of forming the raw material powder into a sheet article; a nitriding step of heating the sheet article in a nitrogen atmosphere at 1200° C. to 1500° C. and nitriding silicon contained in the sheet article; and a sintering step of sintering the sheet article under a nitrogen atmosphere after the nitriding step.Type: GrantFiled: March 31, 2015Date of Patent: April 10, 2018Assignee: Japan Fine Ceramics Co., LTD.Inventors: Dai Kusano, Gen Tanabe, Kiyoshi Hirao, Hideki Hyuga, You Zhou
-
Publication number: 20160362592Abstract: A method for producing a silicon nitride substrate includes a raw material powder preparation step of preparing a raw material powder containing a silicon powder, a rare earth element compound, and a magnesium compound, wherein, when the amount of silicon in the raw material powder is expressed in terms of a silicon nitride content, the raw material powder contains the rare earth element compound at 1 mol % to 7 mol % in terms of an oxide content and contains the magnesium compound at 8 mol % to 15 mol % in terms of an oxide content; a sheet forming step of forming the raw material powder into a sheet article; a nitriding step of heating the sheet article in a nitrogen atmosphere at 1200° C. to 1500° C. and nitriding silicon contained in the sheet article; and a sintering step of sintering the sheet article under a nitrogen atmosphere after the nitriding step.Type: ApplicationFiled: March 31, 2015Publication date: December 15, 2016Inventors: Dai KUSANO, Gen TANABE, Kiyoshi HIRAO, Hideki Hyuga, You Zhou
-
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
-
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
-
Patent number: 8049976Abstract: The present invention relates to an optical part holding member made of ceramic and a production method thereof, and provides an optical part holding member made of ceramic such that a sintered body after processes of degreasing and sintering has small dimensional changes over dimensions of a mold, and a production method thereof. An example includes a lens holder to hold an optical part, made of a silicon nitride ceramic base composite material produced through a process in which silicon and nitrogen are reacted to be nitrided and contains silicon carbide and an iron compound.Type: GrantFiled: May 13, 2010Date of Patent: November 1, 2011Assignees: FUJIFILM Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Ikuo Taki, Hideki Hyuga, Hideki Kita, Yasunori Tanaka
-
Publication number: 20110132793Abstract: There is provided a container which can accommodate an object inside an internal space shaped by an inner surface of the container. The inner surface substantially has a shape of a sphere, a semiregular polyhedron or a dual polyhedron of a semiregular polyhedron. The inner surface is formed by plural segmented members made of a refractory material.Type: ApplicationFiled: June 19, 2009Publication date: June 9, 2011Applicant: National Institute of Advanced Industrial Science and TechnologyInventors: Hideki Kita, Hideki Hyuga, Naoki Kondo
-
Patent number: 7952820Abstract: The present invention relates to an optical part holding member made of ceramic and a production method thereof, and provides an effective permeability to prevent dew condensation. The optical part holding member is made of a silicon nitride ceramic base composite material to hold an optical part, which is produced through a process of nitriding in which silicon is caused to react with nitrogen. By using the silicon nitride ceramic base composite material containing silicon carbide and an iron compound, an airflow volume of 50 ml or more per minute is achieved in an effective airflow area of 1.5 cm2 when an air pressure is added with a pressure difference of 0.4 MPa between both surfaces of a sample of the silicon nitride ceramic base composite material having 1 mm thickness, and the optical part holding member having effective permeability to prevent dew condensation is obtained.Type: GrantFiled: May 18, 2010Date of Patent: May 31, 2011Assignees: FUJIFILM Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Ikuo Taki, Hideki Hyuga, Hideki Kita, Yasunori Tanaka
-
Publication number: 20100315727Abstract: The present invention relates to an optical part holding member made of ceramic and a production method thereof, and provides an optical part holding member made of ceramic such that a sintered body after processes of degreasing and sintering has small dimensional changes over dimensions of a mold, and a production method thereof. An example includes a lens holder to hold an optical part, made of a silicon nitride ceramic base composite material produced through a process in which silicon and nitrogen are reacted to be nitrided and contains silicon carbide and an iron compound.Type: ApplicationFiled: May 13, 2010Publication date: December 16, 2010Applicants: FUJIFILM CORPORATION, National Institute of Advanced Industrial Science and Technology, FUJINON CORPORATIONInventors: Ikuo TAKI, Hideki HYUGA, Hideki KITA, Yasunori TANAKA
-
Publication number: 20100315728Abstract: The present invention relates to an optical part holding member made of ceramic and a production method thereof, and provides an effective permeability to prevent dew condensation. The optical part holding member is made of a silicon nitride ceramic base composite material to hold an optical part, which is produced through a process of nitriding in which silicon is caused to react with nitrogen. By using the silicon nitride ceramic base composite material containing silicon carbide and an iron compound, an airflow volume of 50 ml or more per minute is achieved in an effective airflow area of 1.5 cm2 when an air pressure is added with a pressure difference of 0.4 MPa between both surfaces of a sample of the silicon nitride ceramic base composite material having 1 mm thickness, and the optical part holding member having effective permeability to prevent dew condensation is obtained.Type: ApplicationFiled: May 18, 2010Publication date: December 16, 2010Applicants: FUJIFILM Corporation, National Institute of Advanced Industrial Science and Technology, FUJINON CORPORATIONInventors: Ikuo TAKI, Hideki HYUGA, Hideki KITA, Yasunori TANAKA
-
Patent number: 7749931Abstract: A ceramic material for an optical member which shows black, wherein the ceramic material comprises a reaction-sintered sintered ceramic body prepared by synthesizing a formed body of a mixture comprising a ceramic raw material and a component that accelerates blackening, making use of a reaction sintering; and wherein the ceramic material is a porous body.Type: GrantFiled: February 13, 2007Date of Patent: July 6, 2010Assignees: FUJIFILM Corporation, Fujinon CorporationInventors: Hideki Hyuga, Hideki Kita, Tetsuya Yamazaki, Yasunori Tanaka
-
Patent number: 7605110Abstract: A ceramic body, a ceramic catalyst body, a ceramic catalyst body and related manufacturing methods are disclosed wherein a cordierite porous base material has a surface, formed with acicular particles made of a component different from that of cordierite porous base material, which has an increased specific surface area with high resistance to a sintering effect. The ceramic body is manufactured by preparing a slurry containing an acicular particle source material, preparing a porous base material, applying the slurry onto a surface of the porous base material and firing the porous base material, whose surface is coated with the slurry, to cause acicular particles to develop on the surface of the porous base material. A part of or a whole of surfaces of the acicular particles is coated with a constituent element different from that of the acicular particles.Type: GrantFiled: April 5, 2007Date of Patent: October 20, 2009Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Keiichi Yamada, Kazuhiko Koike, Katsumi Yoshida, Hideki Kita, Naoki Kondo, Hideki Hyuga
-
Publication number: 20070254808Abstract: A ceramic body, a ceramic catalyst body, a ceramic catalyst body and related manufacturing methods are disclosed wherein a cordierite porous base material has a surface, formed with acicular particles made of a component different from that of cordierite porous base material, which has an increased specific surface area with high resistance to a sintering effect. The ceramic body is manufactured by preparing a slurry containing an acicular particle source material, preparing a porous base material, applying the slurry onto a surface of the porous base material and firing the porous base material, whose surface is coated with the slurry, to cause acicular particles to develop on the surface of the porous base material. A part of or a whole of surfaces of the acicular particles is coated with a constituent element different from that of the acicular particles.Type: ApplicationFiled: April 5, 2007Publication date: November 1, 2007Applicants: DENSO CORPORATION, Nippon Soken, Inc.Inventors: Keiichi Yamada, Kazuhiko Koike, Katsumi Yoshida, Hideki Kita, Naoki Kondo, Hideki Hyuga
-
Publication number: 20070191209Abstract: A ceramic material for an optical member which shows black, wherein the ceramic material comprises a reaction-sintered sintered ceramic body prepared by synthesizing a formed body of a mixture comprising a ceramic raw material and a component that accelerates blackening, making use of a reaction sintering; and wherein the ceramic material is a porous body.Type: ApplicationFiled: February 13, 2007Publication date: August 16, 2007Applicants: FUJIFILM Corporation, FUJINON CORPORATIONInventors: Hideki Hyuga, Hideki Kita, Tetsuya Yamazaki, Yasunori Tanaka
-
Publication number: 20010027164Abstract: A CO2 adsorbent that enhances the CO2 recovery rate in the CO2 separation and recovery process is provided. The CO2 adsorbent is made of active carbon and/or molecular sieve carbon with a large specific surface area. The active carbon and/or molecular sieve carbon has micropores and/or mesopores 200 Å or less in size and penetrating pores formed by the micropores and/or mesopores connecting with one another. All or part of surfaces of inner passages through which a gas flows and of terminal pores are covered directly with a polar liquid or polar solid without a reaction layer there between.Type: ApplicationFiled: December 19, 2000Publication date: October 4, 2001Inventors: Akira Ishida, Kazuo Ohsumi, Hideki Hyuga