Patents by Inventor Yasumichi Kogai
Yasumichi Kogai 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).
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Patent number: 11980524Abstract: This invention provides a measure that makes it possible to prevent more effectively, in comparison with the prior art, the invasion of germs from the gap between a dental prosthesis and the gingiva when the dental prosthesis is used in an oral cavity as well as the infection and inflammation associated therewith. There is a dental prosthesis or a component thereof, characterized in that: the dental prosthesis or the component thereof has hydroxyapatite fine particles on a surface of the dental prosthesis or the component thereof; the hydroxyapatite fine particles are sintered bodies; and the hydroxyapatite fine particles have a mean particle size of 10 to 1,000 nm.Type: GrantFiled: July 5, 2022Date of Patent: May 14, 2024Assignees: Medical Foundation Natural Smile, OKABE Co., Ltd., SofSera CorporationInventors: Jun Fujinami, Miwa Fujinami, Shinichi Okabe, Yohki Hieda, Yasumichi Kogai, Karl Kazushige Kawabe
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Patent number: 11504452Abstract: To provide a ceramic particle separable composite material having a calcium phosphate sintered body particle with which bioaffinity reduction and solubility change are suppressed as much as possible and which has a smaller particle diameter. A ceramic particle separable composite material comprising a ceramic particle and a substrate, wherein: the ceramic particle and the substrate are chemically bonded to each other, or the ceramic particle physically adheres to or is embedded in the substrate; the ceramic particle has a particle diameter within a range of 10 nm to 700 nm; the ceramic particle is a calcium phosphate sintered body particle; and the ceramic particle contains no calcium carbonate.Type: GrantFiled: August 30, 2017Date of Patent: November 22, 2022Assignee: SofSera CorporationInventors: Yasumichi Kogai, Nobuo Aoi, Daisuke Nomi, Karl Kazushige Kawabe
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Publication number: 20220331070Abstract: This invention provides a measure that makes it possible to prevent more effectively, in comparison with the prior art, the invasion of germs from the gap between a dental prosthesis and the gingiva when the dental prosthesis is used in an oral cavity as well as the infection and inflammation associated therewith. There is a dental prosthesis or a component thereof, characterized in that: the dental prosthesis or the component thereof has hydroxyapatite fine particles on a surface of the dental prosthesis or the component thereof; the hydroxyapatite fine particles are sintered bodies; and the hydroxyapatite fine particles have a mean particle size of 10 to 1,000 nm.Type: ApplicationFiled: July 5, 2022Publication date: October 20, 2022Applicants: Medical Foundation Natural Smile, OKABE Co., Ltd., SofSera CorporationInventors: Jun Fujinami, Miwa Fujinami, Shinichi Okabe, Yohki Hieda, Yasumichi Kogai, Karl Kazushige Kawabe
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Patent number: 11168031Abstract: This invention has an object to provide a means for providing a calcium phosphate sintered body particle group that does not cause a phenomenon of bubble generation in any use mode thereof, and further has a smaller particle diameter. There is provided a ceramic particle group containing spherical ceramic particles, which is characterized in that the ceramic particle has a particle diameter within a range of 10 nm to 700 nm, and is a calcium phosphate sintered body particle, and further the ceramic particle group contains no calcium carbonate.Type: GrantFiled: August 30, 2017Date of Patent: November 9, 2021Assignee: SofSera CorporationInventors: Yasumichi Kogai, Nobuo Aoi, Daisuke Nomi, Karl Kazushige Kawabe
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Patent number: 10981832Abstract: To provide a technology for sintering calcium phosphate to manufacture a calcium phosphate sintered body and suppressing generation of calcium oxide when calcium phosphate is sintered, there is provided a process for manufacturing a sintered calcium phosphate molded body is characterized by including a step for heating a composition containing at least a composite of calcium phosphate fine particles and polyether and sintering the calcium phosphate fine particles.Type: GrantFiled: September 7, 2016Date of Patent: April 20, 2021Assignee: SofSera CorporationInventors: Takashi Iwamoto, Yasumichi Kogai, Karl Kazushige Kawabe
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Publication number: 20200181026Abstract: This invention has an object to provide a means for providing a calcium phosphate sintered body particle group that does not cause a phenomenon of bubble generation in any use mode thereof, and further has a smaller particle diameter. There is provided a ceramic particle group containing spherical ceramic particles, which is characterized in that the ceramic particle has a particle diameter within a range of 10 nm to 700 nm, and is a calcium phosphate sintered body particle, and further the ceramic particle group contains no calcium carbonate.Type: ApplicationFiled: August 30, 2016Publication date: June 11, 2020Applicant: SofSera CorporationInventors: Yasumichi Kogai, Nobuo Aoi, Daisuke Nomi, Karl Kazushige Kawabe
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Publication number: 20200000684Abstract: It is an object of the present invention to provide a ceramic particle carrying medical tube and/or cuff excellent in cell adhesive property and the like. A medical tube and/or cuff carrying a ceramic particle in at least a part thereof, wherein: the ceramic particle has a particle diameter within a range of 10 nm to 700 nm; the ceramic particle is a calcium phosphate sintered body particle; and the ceramic particle contains no calcium carbonate.Type: ApplicationFiled: August 30, 2017Publication date: January 2, 2020Inventors: Yasumichi KOGAI, Nobuo AOI, Daisuke NOMI, Karl Kazushige KAWABE
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Publication number: 20200002234Abstract: This invention has an object to provide a means for providing a calcium phosphate sintered body particle group that does not cause a phenomenon of bubble generation in any use mode thereof, and further has a smaller particle diameter. There is provided a ceramic particle group containing spherical ceramic particles, which is characterized in that the ceramic particle has a particle diameter within a range of 10 nm to 700 nm, and is a calcium phosphate sintered body particle, and further the ceramic particle group contains no calcium carbonate.Type: ApplicationFiled: August 30, 2017Publication date: January 2, 2020Inventors: Yasumichi KOGAI, Nobuo AOI, Daisuke NOMI, Karl Kazushige KAWABE
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Patent number: 10435777Abstract: An inner surface-modified tube includes fine particles that are buried in an inner surface of a tube with part of surfaces of the fine particles exposed, wherein the fine particles are unevenly distributed such that more fine particles are distributed in a region from a center of the tube to the inner surface of the tube than in a region from the center of the tube to an outer surface of the tube based on a thickness direction of the tube, an arithmetic average roughness Ra of the inner surface of the tube is 1 nm or more and 100 ?m or less, a particle diameter of each fine particle is 10 nm or more and 100 ?m or less, and an inner diameter of the tube is 0.01 mm or more and 100 mm or less.Type: GrantFiled: February 17, 2015Date of Patent: October 8, 2019Assignee: SofSera CorporationInventors: Yasumichi Kogai, Karl Kazushige Kawabe
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Publication number: 20190290807Abstract: To provide a novel stent which is excellent in cell adhesive property and the like. A stent carrying a ceramic particle, wherein: the ceramic particle has a particle diameter within a range of 10 nm to 700 nm; the ceramic particle is a calcium phosphate sintered body particle; and the ceramic particle contains no calcium carbonate.Type: ApplicationFiled: August 30, 2017Publication date: September 26, 2019Inventors: Yasumichi KOGAI, Nobuo AOI, Daisuke NOMI, Karl Kazushige KAWABE
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Publication number: 20190262508Abstract: To provide a ceramic particle separable composite material having a calcium phosphate sintered body particle with which bioaffinity reduction and solubility change are suppressed as much as possible and which has a smaller particle diameter. A ceramic particle separable composite material comprising a ceramic particle and a substrate, wherein: the ceramic particle and the substrate are chemically bonded to each other, or the ceramic particle physically adheres to or is embedded in the substrate; the ceramic particle has a particle diameter within a range of 10 nm to 700 nm; the ceramic particle is a calcium phosphate sintered body particle; and the ceramic particle contains no calcium carbonate.Type: ApplicationFiled: August 30, 2017Publication date: August 29, 2019Inventors: Yasumichi KOGAI, Nobuo AOI, Daisuke NOMI, Karl Kazushige KAWABE
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Publication number: 20190177228Abstract: To provide a technology for sintering calcium phosphate to manufacture a calcium phosphate sintered body and suppressing generation of calcium oxide when calcium phosphate is sintered, there is provided a process for manufacturing a sintered calcium phosphate molded body is characterized by including a step for heating a composition containing at least a composite of calcium phosphate fine particles and polyether and sintering the calcium phosphate fine particles.Type: ApplicationFiled: September 7, 2016Publication date: June 13, 2019Applicant: SofSera CorporationInventors: Takashi Iwamoto, Yasumichi Kogai, Karl Kazushige Kawabe
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Publication number: 20190142553Abstract: This invention provides a measure that makes it possible to prevent more effectively, in comparison with the prior art, the invasion of germs from the gap between a dental prosthesis and the gingiva when the dental prosthesis is used in an oral cavity as well as the infection and inflammation associated therewith. There is a dental prosthesis or a component thereof, characterized in that: the dental prosthesis or the component thereof has hydroxyapatite fine particles on a surface of the dental prosthesis or the component thereof; the hydroxyapatite fine particles are sintered bodies; and the hydroxyapatite fine particles have a mean particle size of 10 to 1,000 nm.Type: ApplicationFiled: April 25, 2017Publication date: May 16, 2019Applicants: Medical Foundation Natural Smile, OKABE Co., Ltd., SofSera CorporationInventors: Jun Fujinami, Miwa Fujinami, Shinichi Okabe, Yohki Hieda, Yasumichi Kogai, Karl Kazushige Kawabe
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Publication number: 20180353598Abstract: Provided is an improved biocompatible immune adjuvant. More specifically, provided are: an immune adjuvant that comprises calcium phosphate, preferably hydroxyapatite, having an average particle size of about 40 nm exclusive to about 1800 nm exclusive; a medicine that comprises this immune adjuvant; and a vaccine that comprises this immune adjuvant. Rod-shaped HAp induced inflammasome-dependent IL-1? production in vitro more strongly than spherical HAp. In WT mice, however, spherical HAp and rod-shaped HAp induced equivalent antigen responses.Type: ApplicationFiled: September 16, 2016Publication date: December 13, 2018Inventors: Ken Ishii, Masayuki Hayashi, Yasumichi Kogai, Daisuke Nomi, Karl Kazushige Kawabe
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Patent number: 9896782Abstract: To provide a method for producing a porous calcium phosphate body having open micro-pores, by the method for producing the porous calcium phosphate body, in which calcium phosphate is subjected to electro-spinning.Type: GrantFiled: June 19, 2013Date of Patent: February 20, 2018Assignees: JNC CORPORATION, SofSera CorporationInventors: Yasumichi Kogai, Daisuke Nomi, Hisashi Hattori, Karl Kazushige Kawabe, You Umebayashi, Yukinori Kataoka, Minoru Miyauchi
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Publication number: 20170087060Abstract: A method for repairing a tooth surface having scratches and hollow portions formed on a tooth enamel surface includes administering a tooth surface repairing material to a dental disease patient. The tooth surface repairing material contains a highly crystalline sintered fine calcium phosphate particle having an average particle diameter in the range of 20 to 100 nm.Type: ApplicationFiled: September 8, 2016Publication date: March 30, 2017Applicants: SOFSERA CORPORATION, BRITESMILEJAPAN CO., LTD.Inventors: Kozo TAMAKI, Karl Kazushige KAWABE, Yasumichi KOGAI
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Publication number: 20170009327Abstract: An inner surface-modified tube includes fine particles that are buried in an inner surface of a tube with part of surfaces of the fine particles exposed, wherein the fine particles are unevenly distributed such that more fine particles are distributed in a region from a center of the tube to the inner surface of the tube than in a region from the center of the tube to an outer surface of the tube based on a thickness direction of the tube, an arithmetic average roughness Ra of the inner surface of the tube is 1 nm or more and 100 ?m or less, a particle diameter of each fine particle is 10 nm or more and 100 ?m or less, and an inner diameter of the tube is 0.01 mm or more and 100 mm or less.Type: ApplicationFiled: February 17, 2015Publication date: January 12, 2017Applicant: SofSera CorporationInventors: Yasumichi Kogai, Karl Kazushige Kawabe
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Patent number: 9447502Abstract: Provided is a means for fixing calcium phosphate onto the surface of a metal by a treatment method which uses no acid and produces less residue. A method of producing a calcium phosphate composite in which calcium phosphate is bonded to the surface of a base material, the method including a surface treatment step of bringing the surface of the base material into contact with a surface treating agent, and then into contact with a silane coupling agent, to surface treat the base material; a polymerization step of initiating, after the surface treatment step, polymerization of the silane coupling agent by means of a polymerization initiator; and a bonding step of bonding the silane coupling agent at the surface of the base material after the polymerization step, with calcium phosphate; wherein the base material is a metal, and the surface treating agent is ozone water.Type: GrantFiled: April 30, 2009Date of Patent: September 20, 2016Assignees: IWATANI CORPORATION, SOFSERA CORPORATIONInventors: Kunihiko Koike, Yasumichi Kogai, Masami Nakagawa
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Publication number: 20160184492Abstract: [Object] To provide a biodegradable material that has sufficient mechanical strength, considering in vivo use also, and that can suppress pH changes caused by acidic degradation products. [Solving Means] Provided is a biodegradable material using polyester as a base material, including calcium phosphate particles having an average particle diameter of 10 to 1000 nm.Type: ApplicationFiled: May 16, 2013Publication date: June 30, 2016Applicant: SofSera CorporationInventors: Yasumichi Kogai, Karl Kazushige Kawabe, Kenji Yamada
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Publication number: 20160050935Abstract: Silver particles are prepared by aggregating silver ions in accordance with a method including steps of (a), in preparing a mixed solution by adding a thiol compound to a solution containing silver ions, adjusting an amount of the thiol compound added to the solution and (b) adding a reducing agent to the mixed solution. This allows a particle size and antibacterial activity of the silver particles to be easily adjusted.Type: ApplicationFiled: April 3, 2014Publication date: February 25, 2016Inventors: Tsutomu Furuzono, Yasumichi Kogai, Karl Kazushige Kawabe