Patents by Inventor Yasuharu NAKASHIMA
Yasuharu NAKASHIMA 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: 11730856Abstract: A method of producing a product inorganic compound including: immersing a raw material inorganic compound having a volume of 10?13 m3 or more in an electrolyte aqueous solution or an electrolyte suspension; exchanging anions in the raw material inorganic compound with anions in the electrolyte aqueous solution or the electrolyte suspension; cations in the raw material inorganic compound are exchanged with cations in the electrolyte aqueous solution or the electrolyte suspension; or including a component (that excludes water, hydrogen, and oxygen) in the electrolyte aqueous solution or the electrolyte suspension not included in the raw material inorganic compound in the raw material inorganic compound; and obtaining a product inorganic compound having a volume of 10?13 m3 or more from the raw material inorganic compound.Type: GrantFiled: January 17, 2020Date of Patent: August 22, 2023Assignee: KYUSHU UNIVERSITY NATIONAL UNIVERSITY CORPORATIONInventors: Kunio Ishikawa, Maho Ishikawa, Yasuharu Nakashima
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Publication number: 20230093764Abstract: A medical honeycomb structure lacking at least a portion of an outer peripheral side wall of a honeycomb structure that includes a plurality of through-holes extending in one direction, wherein sites lacking the outer peripheral side wall have a plurality of grooves, and have a plurality of planes including distant surfaces of groove side walls flanked by the grooves.Type: ApplicationFiled: March 5, 2021Publication date: March 23, 2023Applicants: Kunio ISHIKAWA, GC CorporationInventors: Kunio ISHIKAWA, Koichiro HAYASHI, Akira TSUCHIYA, Ryo KISHIDA, Yasuharu NAKASHIMA
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Patent number: 11542367Abstract: A medical polymer material in which a phosphate group having a C—O—P chemical bond including elemental C in a main chain of a structural formula is present on a surface of a polymer material substantially free of phosphate and hydroxy groups except for ends in the structural formula.Type: GrantFiled: May 16, 2018Date of Patent: January 3, 2023Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio Ishikawa, Kanji Tsuru, Akira Tsuchiya, Yuki Sugiura, Yasuharu Nakashima
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MEDICAL CALCIUM CARBONATE COMPOSITION, RELATED MEDICAL COMPOSITIONS, AND PRODUCTION METHODS THEREFOR
Publication number: 20220356070Abstract: Provided is a medical calcium carbonate composition that highly satisfies 1) tissue affinity, 2) in vivo resorbability, 3) reactivity, and 4) mechanical strength required for medical materials to be implanted in vivo, a medical calcium phosphate composition, a medical carbonate apatite composition, a medical calcium hydroxide porous structure, a medical calcium sulfate setting granules, and a bone defect regeneration kit related to the medical calcium carbonate composition, and methods for producing these. The medical composition calcium carbonate that highly satisfies the above described elements, and related medical compositions can be produced by controlling the polymorph or structure of calcium carbonate.Type: ApplicationFiled: August 27, 2020Publication date: November 10, 2022Applicants: Kunio ISHIKAWA, GC CorporationInventors: Kunio ISHIKAWA, Kanji TSURU, Riki TOITA, Yasuharu NAKASHIMA -
Publication number: 20220117741Abstract: A medical use honeycomb structure having a plurality of through-holes extending in one direction, wherein an outer peripheral section of the medical use honeycomb structure has a through-hole groove formed by incomplete side walls of the through-hole, and a through-hole inlet adjacent to the through-hole groove.Type: ApplicationFiled: December 16, 2021Publication date: April 21, 2022Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Kanji TSURU, Akira TSUCHIYA, Yuki SUGIURA, Yasuharu NAKASHIMA
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Patent number: 11246708Abstract: A medical use honeycomb structure having a plurality of through-holes extending in one direction, wherein an outer peripheral section of the medical use honeycomb structure has a through-hole groove formed by incomplete side walls of the through-hole, and a through-hole inlet adjacent to the through-hole groove.Type: GrantFiled: October 16, 2017Date of Patent: February 15, 2022Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio Ishikawa, Kanji Tsuru, Akira Tsuchiya, Yuki Sugiura, Yasuharu Nakashima
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Patent number: 11167060Abstract: To provide a method for producing a calcium carbonate block for medical use which is useful as a bone substitute or a bone substitute raw material needed in medical care, which is a method for producing a calcium carbonate block that satisfies the following desired properties: 1) the calcium carbonate block has excellent mechanical strength; 2) the calcium carbonate block can be produced by a simplified production method; 3) the calcium carbonate block contains no impurity; and 4) the calcium carbonate block has high reactivity. A method for producing a calcium carbonate block, comprising a step of shaping a water-containing calcium hydroxide block and a carbonation step of immersing the calcium hydroxide block in a carbonate ion-containing aqueous solution.Type: GrantFiled: March 15, 2018Date of Patent: November 9, 2021Assignee: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio Ishikawa, Kanji Tsuru, Akira Tsuchiya, Yuki Sugiura, Noriko Tanaka, Yasuharu Nakashima
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Publication number: 20200354521Abstract: A medical polymer material in which a phosphate group having a C—O—P chemical bond including elemental C in a main chain of a structural formula is present on a surface of a polymer material substantially free of phosphate and hydroxy groups except for ends in the structural formula.Type: ApplicationFiled: May 16, 2018Publication date: November 12, 2020Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Kanji TSURU, Akira TSUCHIYA, Yuki SUGIURA, Yasuharu NAKASHIMA
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Publication number: 20200147260Abstract: A method of producing a product inorganic compound including: immersing a raw material inorganic compound having a volume of 10?13 m3 or more in an electrolyte aqueous solution or an electrolyte suspension; exchanging anions in the raw material inorganic compound with anions in the electrolyte aqueous solution or the electrolyte suspension; cations in the raw material inorganic compound are exchanged with cations in the electrolyte aqueous solution or the electrolyte suspension; or including a component (that excludes water, hydrogen, and oxygen) in the electrolyte aqueous solution or the electrolyte suspension not included in the raw material inorganic compound in the raw material inorganic compound; and obtaining a product inorganic compound having a volume of 10?13 m3 or more from the raw material inorganic compound.Type: ApplicationFiled: January 17, 2020Publication date: May 14, 2020Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Maho ISHIKAWA, Yasuharu NAKASHIMA
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Publication number: 20200093955Abstract: To provide a method for producing a calcium carbonate block for medical use which is useful as a bone substitute or a bone substitute raw material needed in medical care, which is a method for producing a calcium carbonate block that satisfies the following desired properties: 1) the calcium carbonate block has excellent mechanical strength; 2) the calcium carbonate block can be produced by a simplified production method; 3) the calcium carbonate block contains no impurity; and 4) the calcium carbonate block has high reactivity. A method for producing a calcium carbonate block, comprising a step of shaping a water-containing calcium hydroxide block and a carbonation step of immersing the calcium hydroxide block in a carbonate ion-containing aqueous solution.Type: ApplicationFiled: March 15, 2018Publication date: March 26, 2020Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Kanji TSURU, Akira TSUCHIYA, Yuki SUGIURA, Noriko TANAKA, Yasuharu NAKASHIMA
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Publication number: 20200046503Abstract: A medical use honeycomb structure having a plurality of through-holes extending in one direction, wherein an outer peripheral section of the medical use honeycomb structure has a through-hole groove formed by incomplete side walls of the through-hole, and a through-hole inlet adjacent to the through-hole groove.Type: ApplicationFiled: October 16, 2017Publication date: February 13, 2020Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Kanji TSURU, Akira TSUCHIYA, Yuki SUGIURA, Yasuharu NAKASHIMA
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Publication number: 20170252480Abstract: A method of producing a product inorganic compound including: immersing a raw material inorganic compound having a volume of 10?13 m3 or more in an electrolyte aqueous solution or an electrolyte suspension; exchanging anions in the raw material inorganic compound with anions in the electrolyte aqueous solution or the electrolyte suspension; cations in the raw material inorganic compound are exchanged with cations in the electrolyte aqueous solution or the electrolyte suspension; or including a component (that excludes water, hydrogen, and oxygen) in the electrolyte aqueous solution or the electrolyte suspension not included in the raw material inorganic compound in the raw material inorganic compound; and obtaining a product inorganic compound having a volume of 10?13 m3 or more from the raw material inorganic compound.Type: ApplicationFiled: August 31, 2015Publication date: September 7, 2017Applicant: KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Kunio ISHIKAWA, Kanji TSURU, Riki TOITA, Maho ISHIKAWA, Giichiro KAWACHI, Yasuharu NAKASHIMA