Patents by Inventor Yamato Nojiri
Yamato Nojiri 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: 20240139078Abstract: The present invention provides a dental filling kit that comprises a dental cleaning material and a self-adhesive dental composite resin, and that exhibits good adhesive properties to tooth structure, and good sealing properties for cavities. The present invention relates to a dental filling kit comprising: a self-adhesive dental composite resin (X) comprising a monomer (a) having an acidic group, a monomer (b) having no acidic group, a polymerization initiator (c), and a filler (d); and a dental cleaning material (Y) having a pH of 2.0 or more and less than 9.0.Type: ApplicationFiled: April 12, 2022Publication date: May 2, 2024Applicant: Kuraray Noritake Dental Inc.Inventors: Ryo MATSUURA, Yamato NOJIRI
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Publication number: 20230270630Abstract: The present invention provides a composition for dental attachments that exhibits excellent adhesive properties to uncut enamel without carrying out a pretreatment with, for example, a dental adhesive after etching with phosphoric acid or the like, and that has more than a certain level of mechanical characteristics, and enables a simplified bonding procedure for dental attachments. The present invention relates to a composition for dental attachments that comprises a polymerizable monomer (A), a photopolymerization initiator (B), and a filler (C), the polymerizable monomer (A) comprising a polymerizable monomer (A-1) having an acidic group, and a polymerizable monomer (A-2) having no acidic group, the content of the polymerizable monomer (A-1) having an acidic group being 1 to 40 parts by mass in total 100 parts by mass of the polymerizable monomer (A), the content of the filler (C) being 50 to 90 parts by mass in total 100 parts by mass of the composition.Type: ApplicationFiled: August 6, 2021Publication date: August 31, 2023Applicant: Kuraray Noritake Dental Inc.Inventors: Ryo MATSUURA, Yamato NOJIRI
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Patent number: 11607370Abstract: The present invention provides a dental composition that exhibits high adhesive property for both dental restoration materials, such as porcelain, and tooth structure. The present invention relates to a one-part dental composition comprising a compound (A) represented by the following general formula (1), a monomer (B) having an acidic group, and water (C), Y—SiRnX(3-n)??(1), wherein Y represents a monovalent organic group having a polymerizable group, R represents a group selected from the group consisting of an alkyl group, an aryl group, and an aralkyl group, X represents a hydroxyl group or a hydrolyzable group, and n represents an integer of 1 or 2, in which the plurality of R may be the same or different, and the plurality of X may be the same or different, and the content of the water (C) 1.0 to 50 mass %.Type: GrantFiled: October 22, 2018Date of Patent: March 21, 2023Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Ryo Matsuura, Yamato Nojiri
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Patent number: 11452674Abstract: The present invention provides a non-solvent dental adhesive composition exhibiting high initial bond strength and high bond durability to a tooth structure (wet matter) and a high dentin cohesive failure rate on a tooth structure (wet matter) and being substantially free of water and an organic solvent. The present invention relates to a non-solvent dental adhesive composition comprising: an acid group-containing polymerizable monomer (A); a hydrophobic polymerizable monomer (B) having no acid group; and a water-soluble photopolymerization initiator (C) having a solubility of 10 g/L or more in water at 25° C.Type: GrantFiled: August 28, 2018Date of Patent: September 27, 2022Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yamato Nojiri, Mitsunobu Kawashima, Ryo Matsuura, Ryota Murayama
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Patent number: 11304879Abstract: The present invention provides a dental adhesive composition that, even after photocuring with a high-output LED irradiator, shows high bond strength not only for dentin untreated by phosphoric acid etching but also for dentin treated by phosphoric acid etching. The present invention relates to a dental adhesive composition comprising a phosphoric acid group-containing polymerizable monomer (A), the phosphoric acid group-containing polymerizable monomer (A) comprising: a dihydrogen phosphate monoester group-containing polymerizable monomer (A-1) represented by general formula (1); a hydrogen phosphate diester group-containing polymerizable monomer (A-2) represented by general formula (2); and a phosphoric acid tetraester group-containing polymerizable monomer (A-3) represented by general formula (3).Type: GrantFiled: April 19, 2019Date of Patent: April 19, 2022Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yamato Nojiri, Naoki Nishigaki, Mitsunobu Kawashima
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Publication number: 20220071852Abstract: The present invention provides a dental adhesive composition that exhibits high bond strength (initial bond strength and bond durability) to sandblasted zirconia. The present invention relates to a dental adhesive composition comprising a dihydrogen phosphate monoester group-containing polymerizable monomer (A) represented by a general formula (1) and a dihydrogen phosphate monoester group-containing compound (B) represented by a general formula (2). (The definitions of the symbols are omitted.Type: ApplicationFiled: December 20, 2019Publication date: March 10, 2022Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Yamato NOJIRI, Naoki NISHIGAKI, Mitsunobu KAWASHIMA
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Publication number: 20220008314Abstract: The present invention provides a dental cleaner that provides desirable cleanliness against contamination of dental restorations and abutment teeth due to protein-containing body fluids while ensuring uniform quality by reducing precipitation of salts, and that ensures desirable bond durability after cleaning while being safe to use in the oral cavity. The present invention relates to a dental cleaner comprising an acidic group-containing radical polymerizable monomer (a), water (b), and an organic amine compound (c). The present invention also relates to a dental remover for temporary adhesives comprising an acidic group-containing compound (A), water (B), and a basic compound (C).Type: ApplicationFiled: November 19, 2019Publication date: January 13, 2022Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Keishu OKADA, Mariko KAWANA, Nobusuke KASHIKI, Yamato NOJIRI, Yuko TAJIRI, Atsushi MINE, Hirofumi YATANI
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Patent number: 11214415Abstract: A liquid pouring member capable of effectively preventing the liquid from spouting upon opening. An inner plug includes a nozzle, a base to be engaged with an opening of a container, and a hollow cylindrical skirt. The nozzle includes a nozzle upper part extending from an upper surface of the base and a nozzle lower part extending from a lower surface of the base. The nozzle upper part includes an outlet port, and the nozzle lower part includes an inlet port. An inner passage is formed from the inlet port to the outlet port while penetrating therethrough. The nozzle lower part is formed in a radial inner side of the hollow cylindrical skirt, and includes an end portion with an inclined surface. The inlet port is formed in the inclined surface.Type: GrantFiled: August 3, 2018Date of Patent: January 4, 2022Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yamato Nojiri, Kazutoshi Ikeda, Takashi Makabe, Yusuke Fujimura, Shuji Bunno, Kaori Tada
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Publication number: 20210163191Abstract: A liquid pouring member capable of effectively preventing the liquid from spouting upon opening. An inner plug includes a nozzle, a base to be engaged with an opening of a container, and a hollow cylindrical skirt. The nozzle includes a nozzle upper part extending from an upper surface of the base and a nozzle lower part extending from a lower surface of the base. The nozzle upper part includes an outlet port, and the nozzle lower part includes an inlet port. An inner passage is formed from the inlet port to the outlet port while penetrating therethrough. The nozzle lower part is formed in a radial inner side of the hollow cylindrical skirt, and includes an end portion with an inclined surface. The inlet port is formed in the inclined surface.Type: ApplicationFiled: August 3, 2018Publication date: June 3, 2021Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Yamato NOJIRI, Kazutoshi IKEDA, Takashi MAKABE, Yusuke FUJIMURA, Shuji BUNNO, Kaori TADA
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Publication number: 20210145701Abstract: The present invention provides a dental adhesive composition that, even after photocuring with a high-output LED irradiator, shows high bond strength not only for dentin untreated by phosphoric acid etching but also for dentin treated by phosphoric acid etching. The present invention relates to a dental adhesive composition comprising a phosphoric acid group-containing polymerizable monomer (A), the phosphoric acid group-containing polymerizable monomer (A) comprising: a dihydrogen phosphate monoester group-containing polymerizable monomer (A-1) represented by general formula (1); a hydrogen phosphate diester group-containing polymerizable monomer (A-2) represented by general formula (2); and a phosphoric acid tetraester group-containing polymerizable monomer (A-3) represented by general formula (3).Type: ApplicationFiled: April 19, 2019Publication date: May 20, 2021Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Yamato NOJIRI, Naoki NISHIGAKI, Mitsunobu KAWASHIMA
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Patent number: 10987281Abstract: The present invention provides a self-adhesive dental composite resin maintaining mechanical strength, showing excellent storage stability, undergoing little change in transparency and properties of the paste during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a self-adhesive dental composite resin comprising: an acid group-containing (meth)acrylic polymerizable monomer (a); a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group; a photopolymerization initiator (c); and a filler (d), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.0 ?m, the surface treatment agent comprises a silane coupling agent (A) represented by the following general formula (1): CH2?C(R1)—COO—(CH2)p—Si—R2qR3(3-q)??(1), and an organosilazane (B) represented by the following general formula (2): R4R5R6—Si—NH—Si—R7R8R9??(2).Type: GrantFiled: October 20, 2017Date of Patent: April 27, 2021Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Shumei Ishihara, Yamato Nojiri, Mitsuru Takei, Kenji Hatanaka
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Publication number: 20200206091Abstract: The present invention provides a non-solvent dental adhesive composition exhibiting high initial bond strength and high bond durability to a tooth structure (wet matter) and a high dentin cohesive failure rate on a tooth structure (wet matter) and being substantially free of water and an organic solvent. The present invention relates to a non-solvent dental adhesive composition comprising: an acid group-containing polymerizable monomer (A); a hydrophobic polymerizable monomer (B) having no acid group; and a water-soluble photopolymerization initiator (C) having a solubility of 10 g/L or more in water at 25° C.Type: ApplicationFiled: August 28, 2018Publication date: July 2, 2020Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Yamato NOJIRI, Mitsunobu KAWASHIMA, Ryo MATSUURA, Ryota MURAYAMA
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Publication number: 20200179237Abstract: The present invention provides a self-adhesive dental composite resin maintaining mechanical strength, showing excellent storage stability, undergoing little change in transparency and properties of the paste during long-term storage, and having a small solidification risk during long-term storage. The present invention relates to a self-adhesive dental composite resin comprising: an acid group-containing (meth)acrylic polymerizable monomer (a); a polyfunctional (meth)acrylic polymerizable monomer (b) containing no acid group; a photopolymerization initiator (c); and a filler (d), wherein the filler (d) is treated with a surface treatment agent and has an average particle diameter of 0.01 to 50.0 ?m, the surface treatment agent comprises a silane coupling agent (A) represented by the following general formula (1): CH2?C(R1)—COO—(CH2)p—Si—R2qR3(3-q)??(1), and an organosilazane (B) represented by the following general formula (2): R4R5R6—Si—NH—Si—R7R8R9??(2).Type: ApplicationFiled: October 20, 2017Publication date: June 11, 2020Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Shumei ISHIHARA, Yamato NOJIRI, Mitsuru TAKEI, Kenji HATANAKA
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Patent number: 10456333Abstract: Provided herein is a self-etching dental adhesive that exhibits excellent adhesiveness not only to dentin untreated by phosphoric acid etching, but to dentin treated by phosphoric acid etching. The present invention relates to a dental adhesive containing a (meth)acrylamide compound (a), an asymmetric acrylamide-methacrylic acid ester compound (b), and an acid group-containing (meth)acrylic polymerizable monomer (c). The (meth)acrylamide compound (a) is at least one selected from the group consisting of compounds represented by general formula (1), and compounds represented by general formula (2). The asymmetric acrylamide-methacrylic acid ester compound (b) is a compound represented by general formula (3). (In the formulae, the meanings of the symbols are omitted.Type: GrantFiled: December 6, 2016Date of Patent: October 29, 2019Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yamato Nojiri, Mitsuru Takei
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Publication number: 20180360696Abstract: Provided herein is a self-etching dental adhesive that exhibits excellent adhesiveness not only to dentin untreated by phosphoric acid etching, but to dentin treated by phosphoric acid etching. The present invention relates to a dental adhesive containing a (meth)acrylamide compound (a), an asymmetric acrylamide-methacrylic acid ester compound (b), and an acid group-containing (meth)acrylic polymerizable monomer (c). The (meth)acrylamide compound (a) is at least one selected from the group consisting of compounds represented by general formula (1), and compounds represented by general formula (2). The asymmetric acrylamide-methacrylic acid ester compound (b) is a compound represented by general formula (3). (In the formulae, the meanings of the symbols are omitted.Type: ApplicationFiled: December 6, 2016Publication date: December 20, 2018Applicant: KURARAY NORITAKE DENTAL INC.Inventors: Yamato NOJIRI, Mitsuru TAKEI
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Patent number: 10123947Abstract: The present invention provides a dental cement that exhibits excellent adhesiveness to dentin and has high mechanical strength. The present invention relates to a multi-part dental cement containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); a hydrophobic crosslinkable polymerizable monomer (c); a chemical polymerization initiator (d); and a filler (e). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): where X is an optionally substituted, linear or branched C1 to C6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of —O—, —S—, —CO—, —CO—O—, —O—CO—, —NR1—, —CO—NR1—, —NR1—CO—, —CO—O—NR1—, —O—CO—NR1—, and —NR1—CO—NR1—, and R1 is a hydrogen atom or an optionally substituted, linear or branched C1 to C6 aliphatic group.Type: GrantFiled: June 10, 2015Date of Patent: November 13, 2018Assignee: KURARAY NORITAKE DENTAL INCInventors: Mitsuru Takei, Yamato Nojiri
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Patent number: 10071028Abstract: The present invention provides a dental adhesive exhibiting excellent initial bond strength and bond durability to both enamel and dentin. The present invention relates to a dental adhesive containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); and a water-soluble polymerizable monomer (c). The asymmetric acrylamide-methacrylic acid ester compound (a) is represented by the following general formula (1): where X is an optionally substituted, linear or branched C1 to C6 aliphatic group or an optionally substituted aromatic group, the aliphatic group is optionally interrupted by at least one linking group selected from the group consisting of —O—, —S—, —CO—, —CO—O—, —O—CO—, —NR1—, —CO—NR1—, —NR1—CO—, —CO—O—NR1—, —O—CO—NR1—, and —NR1—CO—NR1—, and R1 is a hydrogen atom or an optionally substituted, linear or branched C1 to C6 aliphatic group.Type: GrantFiled: June 10, 2015Date of Patent: September 11, 2018Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yamato Nojiri, Mitsuru Takei
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Patent number: 9844495Abstract: The present invention provides a self-adhesive composite resin having excellent adhesiveness to tooth structures and excellent mechanical strength. The present invention relates to a self-adhesive dental composite resin containing: an asymmetric acrylamide-methacrylic acid ester compound (a); an acid group-containing (meth)acrylic polymerizable monomer (b); a hydrophobic crosslinkable polymerizable monomer (c); a photopolymerization initiator (d); and a filler (e).Type: GrantFiled: June 10, 2015Date of Patent: December 19, 2017Assignee: KURARAY NORITAKE DENTAL INC.Inventors: Yasutaka Kudo, Yamato Nojiri, Mitsuru Takei
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Patent number: D897205Type: GrantFiled: February 2, 2018Date of Patent: September 29, 2020Assignee: Kuraray Noritake Dental Inc.Inventors: Yamato Nojiri, Kazutoshi Ikeda, Takashi Makabe, Yusuke Fujimura, Shuji Bunno, Kaori Tada
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Patent number: D909571Type: GrantFiled: January 4, 2019Date of Patent: February 2, 2021Assignees: KURARAY NORITAKE DENTAL INC., YOSHINO KOGYOSHO CO., LTD.Inventors: Kengo Futami, Yusuke Fujimura, Yamato Nojiri, Takayuki Sunagawa, Kazuhisa Yoshimura