Patents by Inventor Hidefumi Fujimura
Hidefumi Fujimura 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: 20230301760Abstract: A denture base of the present disclosure includes: a base main body; and a plurality of sockets provided in the base main body and each having a concave shape. The plurality of sockets are provided along a shape of the base main body. The base main body includes a socket partition wall provided between adjacent sockets of the plurality of sockets. The socket partition wall is provided with a groove that communicates with the adjacent sockets each other. The plurality of sockets communicate with each other through the groove.Type: ApplicationFiled: March 20, 2023Publication date: September 28, 2023Inventors: Hajime TAKADA, Fumio IMAHORI, Masayoshi NISHIZAWA, Hidefumi FUJIMURA, Manabu FUJII
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Patent number: 11759299Abstract: To provide a dental stereolithography-type three-dimensional printing material in which the total preparing time required from modeling with using a 3D printer to a final curing is short, work efficiency is excellent, temporal shrinkage deformation of a dental three-dimensional modeled object is suppressed and a dimensional accuracy is excellent. The dental stereolithography-type three-dimensional printing material of the present invention comprises at least one or more (a) monofunctional acrylate monomer having an aromatic ring and (b) photopolymerization initiator, wherein an electronegativity difference between adjacent atoms which are bonded by covalent bond in all atoms constituting the (a) monofunctional acrylate monomer having an aromatic ring is less than 1.0.Type: GrantFiled: March 25, 2020Date of Patent: September 19, 2023Assignee: SHOFU INC.Inventors: Namiki Niwa, Hidefumi Fujimura
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Patent number: 11744781Abstract: To provide a dental photopolymerizable composition which can prepare a dental restoration with excellent aesthetic and mechanical properties by optical three-dimensional modeling method (stereolithography). The dental photopolymerizable composition for 3D printer of the present invention comprises: a (a) (meth)acrylate-based polymerizable monomer consisting of a (a1) (meth)acrylate-based polymerizable monomer containing a urethane structure and a (a2) (meth)acrylate-based polymerizable monomer not containing a urethane structure, a (b) cohesive inorganic filler, and a (c) photopolymerization initiator, wherein; a ratio of the (a1) (meth)acrylate-based polymerizable monomer containing a urethane structure and the (a2) (meth)acrylate-based polymerizable monomer not containing a urethane structure in the (a) (meth)acrylate-based polymerizable monomer is 51 to 80: 49 to 20 pts.wt., a ratio of the (a) (meth)acrylate-based polymerizable monomer and the (b) cohesive inorganic filler is 50 to 91: 50 to 9 pts.wt.Type: GrantFiled: August 25, 2020Date of Patent: September 5, 2023Assignee: SHOFU INC.Inventors: Mamoru Hosokawa, Hidefumi Fujimura
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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: 20220347927Abstract: A manufacturing method for a prosthetic apparatus for dental purpose according to one aspect of the present invention includes: acquiring scan data of a model that is a reproduction of at least a part of an inside of an oral cavity of a patient; creating shape data of a shaped body for dental purpose on a basis of the scan data; producing a shaped body on a basis of the shape data; covering at least a part of the shaped body and at least a part of a model with film, the shaped body attached to the model; releasing air in a part covered with the film to deform the film and bring the shaped body into close contact with the model; and curing the shaped body in a state where the shaped body is in close contact with the model.Type: ApplicationFiled: September 17, 2020Publication date: November 3, 2022Inventors: Kenji KONO, Hidefumi FUJIMURA, Toshiyuki TANAKA, Yuushin OKIMOTO, Sayaka ISHIDA, Toshio KITAMURA
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Patent number: 11033465Abstract: To provide a one paste type dental adhesive composition which has mechanical characteristics and aesthetic property required in the restoration material, is superior in durable adhesive strength to the tooth substance, and is hard to be affected by the polymerization shrinkage stress and exhibits excellent durable adhesive strength even if the composition of the present invention is collectively filled and cured. To provide a dental adhesive composition comprising: (a) an acidic group-non-containing polymerizable monomer, (b) an acidic group-containing polymerizable monomer, (c) a filler, (d) a photo polymerization initiator, and (e) a chain transfer agent, wherein the chain transfer agent (e) contains ?-alkylstyrene compound.Type: GrantFiled: March 19, 2019Date of Patent: June 15, 2021Assignee: SHOFU INC.Inventors: Shunsuke Miyata, Hidefumi Fujimura
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Publication number: 20210137796Abstract: To provide a dental photopolymerizable composition which can prepare a dental restoration with excellent aesthetic and mechanical properties by optical three-dimensional modeling method (stereolithography). The dental photopolymerizable composition for 3D printer of the present disclosure comprises: a (a) (meth)acrylate-based polymerizable monomer consisting of a (a1) (meth)acrylate-based polymerizable monomer containing a urethane structure and a (a2) (meth)acrylate-based polymerizable monomer not containing a urethane structure, a (b) cohesive inorganic filler, and a (c) photopolymerization initiator, wherein; a ratio of the (a1) (meth)acrylate-based polymerizable monomer containing a urethane structure and the (a2) (meth)acrylate-based polymerizable monomer not containing a urethane structure in the (a) (meth)acrylate-based polymerizable monomer is 51:80 to 49:20 pts.wt., a ratio of the (a) (meth)acrylate-based polymerizable monomer and the (b) cohesive inorganic filler is 50:91 to 50:9 pts.wt.Type: ApplicationFiled: August 25, 2020Publication date: May 13, 2021Applicant: SHOFU INC.Inventors: Mamoru HOSOKAWA, Hidefumi FUJIMURA
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Publication number: 20200390527Abstract: To provide a dental stereolithography-type three-dimensional printing material in which the total preparing time required from modeling with using a 3D printer to a final curing is short, work efficiency is excellent, temporal shrinkage deformation of a dental three-dimensional modeled object is suppressed and a dimensional accuracy is excellent. The dental stereolithography-type three-dimensional printing material of the present invention comprises at least one or more (a) monofunctional acrylate monomer having an aromatic ring and (b) photopolymerization initiator, wherein an electronegativity difference between adjacent atoms which are bonded by covalent bond in all atoms constituting the (a) monofunctional acrylate monomer having an aromatic ring is less than 1.0.Type: ApplicationFiled: March 25, 2020Publication date: December 17, 2020Applicant: SHOFU INC.Inventors: Namiki NIWA, Hidefumi FUJIMURA
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Publication number: 20200016043Abstract: To provide a one paste type dental adhesive composition which has mechanical characteristics and aesthetic property required in the restoration material, is superior in durable adhesive strength to the tooth substance, and is hard to be affected by the polymerization shrinkage stress and exhibits excellent durable adhesive strength even if the composition of the present invention is collectively filled and cured. To provide a dental adhesive composition comprising: (a) an acidic group-non-containing polymerizable monomer, (b) an acidic group-containing polymerizable monomer, (c) a filler, (d) a photo polymerization initiator, and (e) a chain transfer agent, wherein the chain transfer agent (e) contains ?-alkylstyrene compound.Type: ApplicationFiled: March 19, 2019Publication date: January 16, 2020Applicant: SHOFU INC.Inventors: Shunsuke MIYATA, Hidefumi FUJIMURA
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Patent number: 10485737Abstract: The present invention provides a dental curable composition comprising (A) a polymerizable monomer, (B) an inorganic filler, and (C) a polymerization initiator, wherein the polymerizable monomer (A) comprises (a1) a polyfunctional (meth)acrylate monomer comprising urethane bonds, (a2) a polyfunctional (meth)acrylate monomer comprising hydroxyl groups, and (a3) a polyfunctional (meth)acrylate monomer comprising carboxyl groups, the ratio by weight of (a1):(a2)+(a3) ranges from 1:1 to 9:1, the number of hydroxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a2), and the number of carboxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a3).Type: GrantFiled: January 5, 2018Date of Patent: November 26, 2019Assignee: KABUSHIKI KAISHA SHOFUInventors: Shuhei Takahashi, Hidefumi Fujimura, Jun Uchida, Mitsuji Teramae
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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: 10130564Abstract: Provided are dental polymerizable monomers that can give cured products having high toughness and high rigidity, dental polymerizable monomer compositions containing the polymerizable monomers, and dental compositions containing the dental polymerizable monomer compositions, and cured products thereof having high mechanical properties. The dental polymerizable monomer (A) which includes a urethane acrylate obtained from an appropriately rigid diisocyanate and an appropriately flexible hydroxyacrylate is used to prepare a dental polymerizable monomer composition containing the dental polymerizable monomer, and a dental composition containing the dental polymerizable monomer composition.Type: GrantFiled: March 31, 2015Date of Patent: November 20, 2018Assignees: MITSUI CHEMICALS, INC., SHOFU INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko Yoshinaga, Hiroshi Naruse, Mitsuji Teramae, Kiyomi Fuchigami, Hidefumi Fujimura, Masuji Tsuchikawa, Hirofumi Imai
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Patent number: 10130563Abstract: Provided are dental polymerizable monomer compositions that can give cured products having high toughness and high rigidity, and dental compositions containing such dental polymerizable monomer compositions and cured products thereof having high mechanical properties.Type: GrantFiled: March 31, 2015Date of Patent: November 20, 2018Assignees: MITSUI CHEMICALS, INC., SHOFU INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko Yoshinaga, Hiroshi Naruse, Mitsuji Teramae, Kiyomi Fuchigami, Hidefumi Fujimura, Masuji Tsuchikawa, Hirofumi Imai
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Publication number: 20180214352Abstract: The present invention provides a dental curable composition comprising (A) a polymerizable monomer, (B) an inorganic filler, and (C) a polymerization initiator, wherein the polymerizable monomer (A) comprises (a1) a polyfunctional (meth)acrylate monomer comprising urethane bonds, (a2) a polyfunctional (meth)acrylate monomer comprising hydroxyl groups, and (a3) a polyfunctional (meth)acrylate monomer comprising carboxyl groups, the ratio by weight of (a1):(a2)+(a3) ranges from 1:1 to 9:1, the number of hydroxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a2), and the number of carboxyl groups is not more than 0.5 relative to the number of (meth)acryloyl groups in one molecule of the above-mentioned (a3).Type: ApplicationFiled: January 5, 2018Publication date: August 2, 2018Applicant: KABUSHIKI KAISHA SHOFUInventors: Shuhei TAKAHASHI, Hidefumi FUJIMURA, Jun UCHIDA, Mitsuji TERAMAE
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Patent number: 9855195Abstract: The present invention provides a dental curable composition used for dental filling restorative materials, dental crown prosthesis materials such as inlays, crowns, and bridges, materials for constructing anchor teeth, block materials for dental CAD/CAM, etc. More specifically, the present invention provides a dental curable composition comprising a curable resin (A), a porous inorganic filler (B), and a polymerization initiator (C), wherein the porous inorganic filler (B) comprises a silicon dioxide, and an oxide comprising at least one kind of the other metallic elements, and a ratio (I1/I2) of a maximum absorbance (I1) of 3730 to 3750 cm?1 to a maximum absorbance (I2) of 3000 to 3600 cm?1 in infrared absorption spectrum of the porous inorganic filler (B), is not less than 1 and not more than 3.Type: GrantFiled: September 16, 2016Date of Patent: January 2, 2018Assignees: KABUSHIKI KAISHA SHOFU, JGC CATALYSTS AND CHEMICALS LTD.Inventors: Shuhei Takahashi, Hidefumi Fujimura, Jun Uchida, Mitsuji Teramae, Kunio Hori, Naoyuki Enomoto
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Publication number: 20170181932Abstract: Provided are dental polymerizable monomer compositions that can give cured products having high toughness and high rigidity, and dental compositions containing such dental polymerizable monomer compositions and cured products thereof having high mechanical properties.Type: ApplicationFiled: March 31, 2015Publication date: June 29, 2017Applicants: MITSUI CHEMICALS, INC., SHOFU INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko YOSHINAGA, Hiroshi NARUSE, Mitsuji TERAMAE, Kiyomi FUCHIGAMI, Hidefumi FUJIMURA, Masuji TSUCHIKAWA, Hirofumi IMAI
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Publication number: 20170174621Abstract: Provided are dental polymerizable monomers that can give cured products having high toughness and high rigidity, dental polymerizable monomer compositions containing the polymerizable monomers, and dental compositions containing the dental polymerizable monomer compositions, and cured products thereof having high mechanical properties. The dental polymerizable monomer (A) which includes a urethane acrylate obtained from an appropriately rigid diisocyanate and an appropriately flexible hydroxyacrylate is used to prepare a dental polymerizable monomer composition containing the dental polymerizable monomer, and a dental composition containing the dental polymerizable monomer composition.Type: ApplicationFiled: March 31, 2015Publication date: June 22, 2017Applicants: MITSUI CHEMICALS, INC., SHOFU INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko YOSHINAGA, Hiroshi NARUSE, Mitsuji TERAMAE, Kiyomi FUCHIGAMI, Hidefumi FUJIMURA, Masuji TSUCHIKAWA, Hirofumi IMAI
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Publication number: 20170079890Abstract: The present invention provides a dental curable composition used for dental filling restorative materials, dental crown prosthesis materials such as inlays, crowns, and bridges, materials for constructing anchor teeth, block materials for dental CAD/CAM, etc. More specifically, the present invention provides a dental curable composition comprising a curable resin (A), a porous inorganic filler (B), and a polymerization initiator (C), wherein the porous inorganic filler (B) comprises a silicon dioxide, and an oxide comprising at least one kind of the other metallic elements, and a ratio (I1/I2) of a maximum absorbance (I1) of 3730 to 3750 cm?1 to a maximum absorbance (I2) of 3000 to 3600 cm?1 in infrared absorption spectrum of the porous inorganic filler (B), is not less than 2 and not more than 3.Type: ApplicationFiled: September 16, 2016Publication date: March 23, 2017Applicants: KABUSHIKI KAISHA SHOFU, JGC CATALYSTS AND CHEMICALS LTD.Inventors: Shuhei TAKAHASHI, Hidefumi FUJIMURA, Jun UCHIDA, Mitsuji TERAMAE, Kunio HORI, Naoyuki ENOMOTO