Patents by Inventor Akihiro Nagafuji
Akihiro Nagafuji 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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Publication number: 20230255857Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.Type: ApplicationFiled: April 4, 2023Publication date: August 17, 2023Applicant: SHOFU INC.Inventors: Daisuke HARA, Yuji SADAKANE, Katsura ISHIKAWA, Hidefumi FUJIMURA, Shuji SAKAMOTO, Akihiro NAGAFUJI, Toshiyuki NAKATSUKA
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Patent number: 11648184Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.Type: GrantFiled: January 9, 2015Date of Patent: May 16, 2023Assignee: SHOFU INC.Inventors: Daisuke Hara, Yuji Sadakane, Katsura Ishikawa, Hidefumi Fujimura, Shuji Sakamoto, Akihiro Nagafuji, Toshiyuki Nakatsuka
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Patent number: 11559471Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.Type: GrantFiled: August 9, 2018Date of Patent: January 24, 2023Assignee: SHOFU INC.Inventors: Daisuke Hara, Yuji Sadakane, Katsura Ishikawa, Hidefumi Fujimura, Shuji Sakamoto, Akihiro Nagafuji, Toshiyuki Nakatsuka
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Publication number: 20180344579Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.Type: ApplicationFiled: August 9, 2018Publication date: December 6, 2018Applicant: SHOFU INC.Inventors: Daisuke HARA, Yuji SADAKANE, Katsura ISHIKAWA, Hidefumi FUJIMURA, Shuji SAKAMOTO, Akihiro NAGAFUJI, Toshiyuki NAKATSUKA
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Patent number: 9668943Abstract: A dental conditioning composition that enhances the adhesiveness of any dental material for a tooth surface by suppressing any excessive demineralization for the tooth surface and improving the polymerization activity of a dental adhesive composition by causing a polymerization catalyst included in the dental conditioning composition of the present invention to remain on the tooth surface. A dental conditioning composition having a gel character, that includes a polymerization catalyst, an acidic compound, water, and a thickening agent, and whose pH (the hydrogen ion exponent) is in a range from 0.1 to 0.9.Type: GrantFiled: July 27, 2015Date of Patent: June 6, 2017Assignee: KABUSHIKI KAISHA SHOFUInventors: Kazuya Shinno, Akihiro Nagafuji, Shingo Tateishi, Daisuke Hara, Yoshiyuki Jogetsu
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Patent number: 9345646Abstract: A dental curable composition that allows easily identifying the presence of the dental curable composition in an oral cavity is provided. A dental visible-light curable composition contains a fluorescent substance that generates fluorescence when irradiated with visible light. The fluorescent substance is a compound of formula A3B2C3O12 containing Ce, absorbs visible light with a peak wavelength in a wavelength range of 380 to 500 nm, and generates fluorescence with a peak wavelength in a wavelength range of 550 to 780 nm. In formula A3B2C3O12, A, B, and C are a dodecahedral eight-coordinate Y element, an octahedral six-coordinate Al element, and a tetrahedral four-coordinate Al element, respectively.Type: GrantFiled: October 23, 2013Date of Patent: May 24, 2016Assignee: SHOFU INC.Inventors: Toshiyuki Nakatsuka, Kazuya Shinno, Akihiro Nagafuji, Shingo Tateishi
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Publication number: 20160030294Abstract: Problem An object of the present invention is to provide a dental conditioning composition that enhances the adhesiveness of any dental material for a tooth surface by suppressing any excessive demineralization for the tooth surface and improving the polymerization activity of a dental adhesive composition by causing a polymerization catalyst included in the dental conditioning composition of the present invention to remain on the tooth surface. Solution A dental conditioning composition having a gel character, that includes a polymerization catalyst, an acidic compound, water, and a thickening agent, and whose pH (the hydrogen ion exponent) is in a range from 0.1 to 0.9.Type: ApplicationFiled: July 27, 2015Publication date: February 4, 2016Inventors: Kazuya SHINNO, Akihiro NAGAFUJI, Shingo TATEISHI, Daisuke HARA, Yoshiyuki JOGETSU
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Publication number: 20150342838Abstract: To provide a dental composition wherein the acid buffering capacity can be attained and the acid resistance of the tooth substance can be improved while maintaining very high foul breath inhibition capacity. A dental composition including: ion sustained-release glass; and a carrier for supporting the ion sustained-release glass, wherein the ion sustained-release glass is fluoroaluminoborosilicate glass having a composition range of: 15% to 35% by mass SiO2; 15% to 30% by mass Al2O3; 5% to 20% by mass B2O3; 20% to 45% by mass SrO; 5% to 15% by mass F; and 0% to 10% by mass Na2O.Type: ApplicationFiled: January 9, 2015Publication date: December 3, 2015Inventors: Daisuke HARA, Yuji SADAKANE, Katsura ISHIKAWA, Hidefumi FUJIMURA, Shuji SAKAMOTO, Akihiro NAGAFUJI, Toshiyuki NAKATSUKA
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Patent number: 9066852Abstract: The present invention relates to a dental adhesive primer composition for use in dental fields employed to bond dental materials, such as restoration materials, dental crown materials, prosthetic materials, esthetic materials, orthodontic materials, preventive materials, core build-up materials and root canal materials, to ceramics, metals, resins, composite resins, glass ionomer cements, and hard biotissues (enamel or dentin of natural tooth). The present invention also relates to a dental adhesive primer composition including a dental adhesive composition which can be used not only in combination with another adhesive composition but also alone.Type: GrantFiled: May 24, 2006Date of Patent: June 30, 2015Assignee: KABUSHIKI KAISHA SHOFUInventors: Kazuya Shinno, Toshiyuki Nakatsuka, Akihiro Nagafuji
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Publication number: 20140120499Abstract: A dental curable composition that allows easily identifying the presence of the dental curable composition in an oral cavity is provided. A dental visible-light curable composition contains a fluorescent substance that generates fluorescence when irradiated with visible light. The fluorescent substance is a compound of formula A3B2C3O12 containing Ce, absorbs visible light with a peak wavelength in a wavelength range of 380 to 500 nm, and generates fluorescence with a peak wavelength in a wavelength range of 550 to 780 nm. In formula A3B2C3O12, A, B, and C are a dodecahedral eight-coordinate Y element, an octahedral six-coordinate Al element, and a tetrahedral four-coordinate Al element, respectively.Type: ApplicationFiled: October 23, 2013Publication date: May 1, 2014Applicant: SHOFU INC.Inventors: Toshiyuki Nakatsuka, Kazuya Shinno, Akihiro Nagafuji, Shingo Tateishi
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Publication number: 20090299006Abstract: The present invention relates to a dental adhesive primer composition for use in dental fields employed to bond dental materials, such as restoration materials, dental crown materials, prosthetic materials, esthetic materials, orthodontic materials, preventive materials, core build-up materials and root canal materials, to ceramics, metals, resins, composite resins, glass ionomer cements, and hard biotissues (enamel or dentin of natural tooth). The present invention also relates to a dental adhesive primer composition including a dental adhesive composition which can be used not only in combination with another adhesive composition but also alone.Type: ApplicationFiled: May 24, 2006Publication date: December 3, 2009Inventors: Kazuya Shinno, Toshiyuki Nakatsuka, Akihiro Nagafuji
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Patent number: 6063830Abstract: The present invention provides a dental curable material suitable for a production of an artificial teeth having a strong toughness, wear resistance, transparency and moldability, which comprises a silane-treated silica uniformely dispersed in urethane (meth)acrylate (a): said silica has a 1 to 85 nm, with at least one silane compound represented by the formula (1):YnSiX.sub.4-n (1)wherein Y is a hydrocarbon group or a reactive group containing a vinyl-polymerizable group; X is a hydrolyzable group; and n is an integer of 1, 2 or 3, and is uniformly dispersed in a urethane (meth)acrylte (b).Type: GrantFiled: December 4, 1997Date of Patent: May 16, 2000Assignee: Kabushiki Kaisha ShofuInventors: Mikito Deguchi, Hiroyuki Shioi, Akihiro Nagafuji