Patents by Inventor Hidetoshi Arimura
Hidetoshi Arimura 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: 10765780Abstract: The present invention aims to provide a tissue regeneration substrate excellent in penetrability to cells as well as capable of effectively preventing cell leakage from the tissue regeneration substrate to accelerate tissue regeneration; and a method of producing the tissue regeneration substrate. The present invention relates to a tissue regeneration substrate including: a nonwoven fabric made of a bioabsorbable material, the tissue regeneration substrate having a laminated structure in which a layer containing a nonwoven fabric having an average pore size of 20 to 50 ?m and a layer containing a nonwoven fabric having an average pore size of 5 to 20 ?m are integrated.Type: GrantFiled: December 3, 2015Date of Patent: September 8, 2020Assignee: GUNZE, LIMITEDInventors: Hidetoshi Arimura, Keita Ide
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Publication number: 20170312395Abstract: The present invention aims to provide a tissue regeneration substrate excellent in penetrability to cells as well as capable of effectively preventing cell leakage from the tissue regeneration substrate to accelerate tissue regeneration; and a method of producing the tissue regeneration substrate. The present invention relates to a tissue regeneration substrate including: a nonwoven fabric made of a bioabsorbable material, the tissue regeneration substrate having a laminated structure in which a layer containing a nonwoven fabric having an average pore size of 20 to 50 ?m and a layer containing a nonwoven fabric having an average pore size of 5 to 20 ?m are integrated.Type: ApplicationFiled: December 3, 2015Publication date: November 2, 2017Inventors: Hidetoshi ARIMURA, Keita IDE
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Patent number: 9642934Abstract: The present invention aims to provide a bone regeneration material kit, a paste-like bone regeneration material, a bone regeneration material, and a bone bonding material, which contain particles including a bioabsorbable polymer; and can fill a bone defect or damage and secure the mechanical strength of the bone in the short term and can promote regeneration of the patient's own bone in the long term. In addition, they can exhibit anti-washout properties after filling even when they are in contact with water such as blood or biological fluids. The present invention relates to a bone regeneration material kit comprising: a particle comprising a calcium salt and having an inositol phosphate or salt thereof adsorbed on the surface; a particle comprising a bioabsorbable polymer; and an aqueous medium.Type: GrantFiled: August 8, 2014Date of Patent: May 9, 2017Assignees: Gunze Limited, Meiji University, Kanagawa Academy of Science and TechnologyInventors: Keishi Kiminami, Hidetoshi Arimura, Mamoru Aizawa, Minori Mizumoto, Toshiisa Konishi
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Publication number: 20160175481Abstract: The present invention aims to provide a bone regeneration material kit, a paste-like bone regeneration material, a bone regeneration material, and a bone bonding material, which contain particles including a bioabsorbable polymer; and can fill a bone defect or damage and secure the mechanical strength of the bone in the short term and can promote regeneration of the patient' s own bone in the long term. In addition, they can exhibit anti-washout properties after filling even when they are in contact with water such as blood or biological fluids. The present invention relates to a bone regeneration material kit comprising: a particle comprising a calcium salt and having an inositol phosphate or salt thereof adsorbed on the surface; a particle comprising a bioabsorbable polymer; and an aqueous medium.Type: ApplicationFiled: August 8, 2014Publication date: June 23, 2016Inventors: Keishi KIMINAMI, Hidetoshi ARIMURA, Mamoru AIZAWA, Minori MIZUMOTO, Toshiisa KONISHI
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Publication number: 20160029483Abstract: To provide copper particulate dispersion capable of forming a conductive film having favorable adhesiveness on an inorganic substrate by photo-sintering. The copper particulate dispersion includes a dispersion vehicle and copper particulates RUM The copper particulates are dispersed into the dispersion vehicle. The copper particulate dispersion includes an adhesion improvement agent for improving adhesiveness between a conductive film formed on a substrate by photo-sintering the copper particulate and the substrate. The substrate is an inorganic substrate. The adhesion improvement agent is a compound containing a phosphorus atom. Thus, the adhesion improvement agent improves adhesiveness between the conductive film and the inorganic substrate.Type: ApplicationFiled: January 31, 2014Publication date: January 28, 2016Applicant: ISHIHARA CHEMICAL CO., LTD.Inventors: Yuichi KAWATO, Hidetoshi ARIMURA, Tomio KUDO
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Publication number: 20160007455Abstract: Provided is a copper particulate dispersion that can facilitate the formation of a conductive film with low electric resistance by photo-sintering. A copper particulate dispersion includes a dispersion vehicle and copper particulates dispersed in the dispersion vehicle. The copper particulate dispersion contains a sintering promoter. The sintering promoter is a compound that removes copper oxide from copper at a temperature higher than ambient temperature. The sintering promoter thereby removes surface oxide coatings from the copper particulates during the photo-sintering of the copper particulates.Type: ApplicationFiled: January 31, 2014Publication date: January 7, 2016Applicant: ISHIHARA CHEMICAL CO., LTD.Inventors: Yuichi KAWATO, Hidetoshi ARIMURA, Tomio KUDO
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Publication number: 20150240028Abstract: The purpose of the present invention is to provide a biodegradable polymer compound that is pliable and displays the same decomposition behavior as linear lactic acid-?-caprolactone copolymer. The problem is solved by a branched polymer (particularly, a star-shaped polymer) having at least three arms formed from lactic acid-?-caprolactone copolymer and a weight-average molecular weight of at least 150,000.Type: ApplicationFiled: August 14, 2013Publication date: August 27, 2015Inventor: Hidetoshi Arimura
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Patent number: 8506849Abstract: A conductive ink includes metallic nanoparticles, a polymeric dispersant, and a solvent. The polymeric dispersant may be ionic, non-ionic, or any combination of ionic and non-ionic polymeric dispersants. The solvent may include water, an organic solvent, or any combination thereof. The conductive ink may include a stabilizing agent, an adhesion promoter, a surface tension modifier, a defoaming agent, a leveling additive, a rheology modifier, a wetting agent, an ionic strength modifier, or any combination thereof.Type: GrantFiled: February 24, 2009Date of Patent: August 13, 2013Assignees: Applied Nanotech Holdings, Inc., Ishihara Chemical Co., Ltd.Inventors: Xueping Li, Yunjun Li, Peter B. Laxton, David Max Roundhill, Hidetoshi Arimura
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Patent number: 8481673Abstract: The present invention provides a method for reducing the content of a metal catalyst in a biodegradable and absorbable polymer that can be applied on an industrial scale and a method for producing a biodegradable and bioabsorbable polymer having a metal catalyst content of less than 1 ppm in terms of a metal. The method includes the steps of (1) copolymerizing lactide and ?-caprolactone at a molar ratio ranging from 40/60 to 60/40 or 65/35 to 85/15 in the presence of the metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a volume ratio ranging from 25/75 to 45/55 or 45/55 to 55/45 at less than 40° C., and drying the copolymer.Type: GrantFiled: September 21, 2012Date of Patent: July 9, 2013Assignee: Gunze LimitedInventors: Hidetoshi Arimura, Yoshitake Takahashi, Koji Yamauchi
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Patent number: 8404160Abstract: A metallic ink including a vehicle, a multiplicity of copper nanoparticles, and an alcohol. The conductive metallic ink may be deposited on a substrate by methods including inkjet printing and draw-down printing. The ink may be pre-cured and cured to form a conductor on the substrate.Type: GrantFiled: March 31, 2009Date of Patent: March 26, 2013Assignees: Applied Nanotech Holdings, Inc., Ishihara Chemical Co., Ltd.Inventors: Yunjun Li, David Max Roundhill, Xueping Li, Peter B. Laxton, Hidetoshi Arimura, Zvi Yaniv
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Publication number: 20090274833Abstract: A metallic ink including a vehicle, a multiplicity of copper nanoparticles, and an alcohol. The conductive metallic ink may be deposited on a substrate by methods including inkjet printing and draw-down printing. The ink may be pre-cured and cured to form a conductor on the substrate.Type: ApplicationFiled: March 31, 2009Publication date: November 5, 2009Applicants: Ishihara Chemical Co., Ltd., Applied Nanotech Holdings, Inc.Inventors: Yunjun Li, David Max Roundhill, Xueping Li, Peter B. Laxton, Hidetoshi Arimura, Zvi Yaniv
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Publication number: 20090242854Abstract: A conductive ink includes metallic nanoparticles, a polymeric dispersant, and a solvent. The polymeric dispersant may be ionic, non-ionic, or any combination of ionic and non-ionic polymeric dispersants. The solvent may include water, an organic solvent, or any combination thereof. The conductive ink may include a stabilizing agent, an adhesion promoter, a surface tension modifier, a defoaming agent, a leveling additive, a rheology modifier, a wetting agent, an ionic strength modifier, or any combination thereof.Type: ApplicationFiled: February 24, 2009Publication date: October 1, 2009Applicants: Applied Nanotech Holdings, Inc., Ishihara Chemical Co., Ltd.Inventors: Xueping Li, Yunjun Li, Peter B. Laxton, David Max Roundhill, Hidetoshi Arimura
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Publication number: 20090171064Abstract: The present invention provides a safe biodegradable and bioabsorbable polymer having an extremely low metal catalyst content, while retaining the properties desired for a medical implant or the like; and a process for producing the same. The present invention further provides a method for reducing the content of a metal catalyst in a biodegradable and absorbable polymer that can be applied on an industrial scale. A method for producing a biodegradable and bioabsorbable polymer having a metal catalyst content of less than 1 ppm in terms of a metal comprising the steps of (1) copolymerizing lactide and ?-caprolactone at a molar ratio ranging from 40/60 to 60/40 in the presence of the metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a volume ratio ranging from 25/75 to 45/55 at less than 40° C., and drying the copolymer. 13.Type: ApplicationFiled: June 18, 2007Publication date: July 2, 2009Applicant: GUNZE LIMITEDInventors: Hidetoshi Arimura, Yoshitake Takahashi, Koji Yamauchi