Patents by Inventor Mitsuji Teramae
Mitsuji Teramae 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: 20210401552Abstract: [Problem] To provide a zirconia mill blank for dental cutting and machining which may impart reproducibility of color tone similar to a natural tooth and high strength to a zirconia perfect sintered body without a special sintering method such as HIP treatment. [Solution] A zirconia mill blank for dental cutting and machining comprises at least two intermediate layers LA and LB which satisfy the following Formula (1) and Formula (2), wherein the layer LA is contained in a section A in which a distance from one plane of two planes is within 40% of the distance between the two planes and the layer LB is contained in a section B in which a distance from the other plane is within 40% of the distance between the two planes, wherein in a case in which, a sintered body prepared by sintering at 1550° C. a test specimen cut out from the layer LA is defined as sintered body SA, a sintered body at 1550° C.Type: ApplicationFiled: March 5, 2021Publication date: December 30, 2021Applicant: SHOFU INC.Inventors: Kazumichi NONAKA, Shuhei TAKAHASHI, Mitsuji TERAMAE
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Patent number: 11141247Abstract: The present invention relates to a composite material which can be used as a dental prosthesis device (crown, bridge), and specifically, relates to a composite material including a curable resin and a fiber material, and more specifically relates to a block-like composite material for dental cutting and processing characterized by having a multilayered structure including at least two layers having different transparencies. There are no technical information relating to a color tone and a transparency of the fiber material. To provide a block-like composite material for dental cutting and processing, wherein the block-like composite material has a multilayered structure including at least two layers having different transparencies, and the each layer includes a curable resin and a fiber material.Type: GrantFiled: June 10, 2016Date of Patent: October 12, 2021Assignee: SHOFU INC.Inventors: Mitsuji Teramae, Masanori Goto
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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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Patent number: 10391039Abstract: To provide a dental lithium silicate glass composition capable of providing a dental lithium silicate glass ceramic capable of efficiently precipitating the main crystals (lithium disilicate and/or lithium metasilicate) even after heat treatment. To provide a Al2O3-free dental lithium silicate glass composition including the following components: SiO2: 60.0 to 80.0% by weight, Li2O: 10.0 to 17.0% by weight, K2O: 0.5 to 10.0% by weight, ZrO2: 0.0 to 5.0% by weight, a nucleating agent: 1.0 to 6.0% by weight, a glass stabilizer: 0.0 to 8.0% by weight and a colorant: 0.0 to 10.0% by weight.Type: GrantFiled: March 31, 2017Date of Patent: August 27, 2019Assignee: SHOFU INC.Inventors: Daisuke Takeuchi, Mitsuji Teramae
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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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Patent number: 9839498Abstract: To provide a multilayer resin material for dental milling and machining, comprising an inorganic filler in a content of 40% by weight or more and a plurality of layers different in transparency and color tone from each other, wherein the thickness of the uppermost layer (U) and the thickness of the lowermost layer (L) are each 1 mm or more, the contrast ratios (uppermost layer: CU, lowermost layer: CL) as indices for the transparency of the uppermost layer (U) and the transparency of the lowermost layer (L) satisfy the following relations: 0.30?CU?0.60 0.55?CL?0.Type: GrantFiled: November 29, 2016Date of Patent: December 12, 2017Assignee: SHOFU INC.Inventors: Masanori Goto, Toshio Kitamura, Mitsuji Teramae
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Publication number: 20170281473Abstract: To provide a dental lithium silicate glass composition capable of providing a dental lithium silicate glass ceramic capable of efficiently precipitating the main crystals (lithium disilicate and/or lithium metasilicate) even after heat treatment. To provide a Al2O3-free dental lithium silicate glass composition including the following components: SiO2: 60.0 to 80.0% by weight, Li2O: 10.0 to 17.0% by weight, K2O: 0.5 to 10.0% by weight, ZrO2: 0.0 to 5.0% by weight, a nucleating agent: 1.0 to 6.0% by weight, a glass stabilizer: 0.0 to 8.0% by weight and a colorant: 0.0 to 10.0% by weight.Type: ApplicationFiled: March 31, 2017Publication date: October 5, 2017Applicant: SHOFU INC.Inventors: Daisuke TAKEUCHI, Mitsuji Teramae
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Publication number: 20170196667Abstract: The present invention relates to a composite material which can be used as a dental prosthesis device (crown, bridge), and specifically, relates to a composite material including a curable resin and a fiber material, and more specifically relates to a block-like composite material for dental cutting and processing characterized by having a multilayered structure including at least two layers having different transparencies. There are no technical information relating to a color tone and a transparency of the fiber material. To provide a block-like composite material for dental cutting and processing, wherein the block-like composite material has a multilayered structure including at least two layers having different transparencies, and the each layer includes a curable resin and a fiber material.Type: ApplicationFiled: June 10, 2016Publication date: July 13, 2017Applicant: SHOFU INC.Inventors: Mitsuji TERAMAE, Masanori GOTO
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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: 20170151041Abstract: To provide a multilayer resin material for dental milling and machining, comprising an inorganic filler in a content of 40% by weight or more and a plurality of layers different in transparency and color tone from each other, wherein the thickness of the uppermost layer (U) and the thickness of the lowermost layer (L) are each 1 mm or more, the contrast ratios (uppermost layer: CU, lowermost layer: CL) as indices for the transparency of the uppermost layer (U) and the transparency of the lowermost layer (L) satisfy the following relations: 0.30?CU?0.60 0.55?CL?0.Type: ApplicationFiled: November 29, 2016Publication date: June 1, 2017Applicant: SHOFU INC.Inventors: Masanori GOTO, Toshio KITAMURA, Mitsuji TERAMAE
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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
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Patent number: 9427379Abstract: Provided are opaque materials exhibiting a good adhesive strength and a good color tone reproduction comparable with natural dental crowns as well as having a good operability. In addition, the opaque materials may exhibit a stain-resistance property in rebuilding-up a dental composition on the opaque materials in a cured form with a metal instrument. Further, the opaque materials may exhibit a good color tone reproduction comparable with natural dental crowns even if a dental membrane is thinly formed from the opaque metals. The dental membrane is formed from a first opaque layer and a second opaque layer, wherein the first opaque layer contains a filler of indefinite-shape particles and the second opaque layer contains a filler of spherical-shape particles, and wherein the first opaque layer is formed on a metal base and the second opaque layer is formed on the first opaque layer.Type: GrantFiled: March 24, 2014Date of Patent: August 30, 2016Assignee: KABUSHIKI KAISHA SHOFUInventors: Jun Uchida, Mitsuji Teramae, Shuhei Takahashi, Masanori Goto, Ryuichi Yoshimoto
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Patent number: 8993650Abstract: A dental coloring material composition comprising containing: (a) a polymerizable monomer and/or an oligomer, (b) a polymerization catalyst, and (c) a pigment and/or a dye, wherein a color tone thereof is a cyan color based on three subtractive primary colors, or a color tone thereof is a magenta color based on three subtractive primary colors, or a color tone thereof is a yellow color based on three subtractive primary colors, and a dental color material set using the dental coloring material compositions in combination.Type: GrantFiled: July 1, 2009Date of Patent: March 31, 2015Assignee: Kabushiki Kaisha ShofuInventors: Jun Uchida, Yushin Okimoto, Mitsuji Teramae, Mitsuharu Mizuno
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Publication number: 20140295376Abstract: Provided are opaque materials exhibiting a good adhesive strength and a good color tone reproduction comparable with natural dental crowns as well as having a good operability. In addition, the opaque materials may exhibit a stain-resistance property in rebuilding-up a dental composition on the opaque materials in a cured form with a metal instrument. Further, the opaque materials may exhibit a good color tone reproduction comparable with natural dental crowns even if a dental membrane is thinly formed from the opaque metals. The dental membrane is formed from a first opaque layer and a second opaque layer, wherein the first opaque layer contains a filler of indefinite-shape particles and the second opaque layer contains a filler of spherical-shape particles, and wherein the first opaque layer is formed on a metal base and the second opaque layer is formed on the first opaque layer.Type: ApplicationFiled: March 24, 2014Publication date: October 2, 2014Applicant: KABUSHIKI KAISHA SHOFUInventors: Jun UCHIDA, Mitsuji TERAMAE, Shuhei TAKAHASHI, Masanori GOTO, Ryuichi YOSHIMOTO
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Patent number: 8013032Abstract: Disclosed is a dental composition comprising 0.01 to 10 parts by weight of at least one kind of (a) a visible light-photopolymerization catalyst compound and one or more kinds of (b) di(meth)acrylate compounds represented by the general formula (I): wherein R1 and R2 each independently represent hydrogen or a methyl group, and a repeating unit number n of an ethylene oxide group is from 9 to 50.Type: GrantFiled: March 4, 2009Date of Patent: September 6, 2011Assignee: Kabushiki Kaisha ShofuInventors: Jun Uchida, Mitsuharu Mizuno, Mitsuji Teramae
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Patent number: 7872058Abstract: An object of the present invention is to provide a photopolymerizable dental composition which causes less change in a color tone before and after curing and exhibits excellent photopolymerizability to irradiation in a wide wavelength range, and has also excellent thin-layer surface curability, and to provide a photopolymerization initiator used therefor. Disclosed is a visible light-polymerizable dental composition which does not substantially contain an amine compound as a photosensitizer, comprising 0.01 to 10 parts by weight of a (bis)acylphosphine oxide compound, 0.01 to 10 parts by weight of an ?-diketone compound and 100 parts by weight of a polymerizable monomer.Type: GrantFiled: March 4, 2009Date of Patent: January 18, 2011Assignee: Kabushiki Kaisha ShofuInventors: Jun Uchida, Mitsuharu Mizuno, Mitsuji Teramae