Patents by Inventor Tatsuya Ori
Tatsuya Ori 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: 20220362201Abstract: An odontoblast proliferation/differentiation promoting agent contains a calcium salt of 4-(meth)acryloyloxyethyltrimellitic acid.Type: ApplicationFiled: October 23, 2020Publication date: November 17, 2022Inventors: Takashi SAITO, Youjing QIU, Tamaki OTSUKI, Akiyo TADA, Takashi YAMAMOTO, Tatsuya ORI, Kumiko NAKAMURA, Tadashi ISHIDA
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Publication number: 20220169844Abstract: The present invention improves the long-term storage stability of an organoborane-Lewis base complex. First composite particles of the present invention include particles of an organic polymer (B), and an organoborane-Lewis base complex (A) contained in the particles. Second composite particles of the present invention include particles of an inorganic compound (B?), and an organoborane-Lewis base complex (A) adsorbed on the particles.Type: ApplicationFiled: February 16, 2022Publication date: June 2, 2022Applicant: SUN MEDICAL CO., LTD.Inventors: Yuya YAMAMOTO, Tatsuya ORI, Tamaki OTSUKI, Asami OKUDA, Akari YAMAMOTO
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Patent number: 11292905Abstract: The present invention improves the long-term storage stability of an organoborane-Lewis base complex. First composite particles of the present invention include particles of an organic polymer (B), and an organoborane-Lewis base complex (A) contained in the particles. Second composite particles of the present invention include particles of an inorganic compound (B?), and an organoborane-Lewis base complex (A) adsorbed on the particles.Type: GrantFiled: September 29, 2017Date of Patent: April 5, 2022Assignee: SUN MEDICAL CO., LTD.Inventors: Yuya Yamamoto, Tatsuya Ori, Tamaki Otsuki, Asami Okuda, Akari Yamamoto
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Patent number: 11130864Abstract: The present invention improves the long-term storage stability of a polymerizable composition including an organoborane and a polymerizable monomer. A polymerizable composition includes (A) an organoborane, (B) an acidic group-free polymerizable monomer, and (C) a stabilizer for the organoborane (A), the composition being such that when the composition, after being allowed to stand at 45° C. for 48 hours, is analyzed with an E-type viscometer at a temperature of 25° C. and a rotational speed of 50 rpm, the ratio of the viscosity after the standing to the viscosity before the standing (viscosity after standing/viscosity before standing) is less than 100.Type: GrantFiled: February 8, 2017Date of Patent: September 28, 2021Assignee: SUN MEDICAL CO., LTD.Inventors: Tamaki Otsuki, Tatsuya Ori, Yuya Yamamoto, Takashi Yamamoto, Masami Arata
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Patent number: 11110038Abstract: A dental adhesive curable composition containing a polymerizable monomer including a polymerizable monomer represented by formula (1?) and defined amounts of an acidic group-containing polymerizable monomer, a polymerization initiator containing a peroxide and a photopolymerization initiator, and a reductant containing a sulfinic acid compound and/or a salt thereof, and a filler: wherein the R groups, n and m are defined. A dental adhesive curable kit and a mobile tooth fixing material are also provided.Type: GrantFiled: September 30, 2019Date of Patent: September 7, 2021Assignees: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko Yoshinaga, Yoshimitsu Tanabe, Shinsuke Kinoshita, Takenori Mitamura, Hiroki Murai, Takeshi Yokoyama, Yoshihisa Kamimoto, Tatsuya Ori, Hirohisa Shimizu, Masami Arata, Masuji Tsuchikawa, Sayaka Miyamori, Yoshiaki Katsura
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Publication number: 20200263024Abstract: The present invention improves the long-term storage stability of an organoborane-Lewis base complex. First composite particles of the present invention include particles of an organic polymer (B), and an organoborane-Lewis base complex (A) contained in the particles. Second composite particles of the present invention include particles of an inorganic compound (B?), and an organoborane-Lewis base complex (A) adsorbed on the particles.Type: ApplicationFiled: September 29, 2017Publication date: August 20, 2020Applicant: SUN MEDICAL CO., LTD.Inventors: Yuya YAMAMOTO, Tatsuya ORI, Tamaki OTSUKI, Asami OKUDA, Akari YAMAMOTO
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Publication number: 20200030194Abstract: A dental adhesive curable composition containing a polymerizable monomer including a polymerizable monomer represented by formula (1?) and defined amounts of an acidic group-containing polymerizable monomer, a polymerization initiator containing a peroxide and a photopolymerization initiator, and a reductant containing a sulfinic acid compound and/or a salt thereof, and a filler: wherein the R groups, n and m are defined. A dental adhesive curable kit and a mobile tooth fixing material are also provided.Type: ApplicationFiled: September 30, 2019Publication date: January 30, 2020Applicants: Mitsui Chemicals, Inc., Sun Medical Co., Ltd.Inventors: Kazuhiko YOSHINAGA, Yoshimitsu TANABE, Shinsuke KINOSHITA, Takenori MITAMURA, Hiroki MURAI, Takeshi YOKOYAMA, Yoshihisa KAMIMOTO, Tatsuya ORI, Hirohisa SHIMIZU, Masami ARATA, Masuji TSUCHIKAWA, Sayaka MIYAMORI, Yoshiaki KATSURA
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Patent number: 10470980Abstract: The present invention provides polymerizable monomers represented by the following general formula (1) that are useful as dental materials. In the general formula (1), Ra is a divalent C6-9 aromatic hydrocarbon group or a divalent C6-9 optionally bridged cyclic hydrocarbon group, R1 and R2 are each a hydrogen atom or a C1-3 alkyl group, R3, R4, R5 and R6 are each a hydrogen atom or a hydrocarbon group, R7 and R8 are each a hydrogen atom or a methyl group, m and n are each independently 0 to 4, and Rb and Rc are each independently a C2-6 linear alkylene or C2-6 linear oxyalkylene group optionally substituted with a C1-3 alkyl group or a (meth)acryloyloxymethylene group in place of a hydrogen atom.Type: GrantFiled: March 31, 2016Date of Patent: November 12, 2019Assignees: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko Yoshinaga, Yoshimitsu Tanabe, Shinsuke Kinoshita, Takenori Mitamura, Hiroki Murai, Takeshi Yokoyama, Yoshihisa Kamimoto, Tatsuya Ori, Hirohisa Shimizu, Masami Arata, Masuji Tsuchikawa, Sayaka Miyamori, Yoshiaki Katsura
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Publication number: 20190040261Abstract: The present invention improves the long-term storage stability of a polymerizable composition including an organoborane and a polymerizable monomer. A polymerizable composition includes (A) an organoborane, (B) an acidic group-free polymerizable monomer, and (C) a stabilizer for the organoborane (A), the composition being such that when the composition, after being allowed to stand at 45° C. for 48 hours, is analyzed with an E-type viscometer at a temperature of 25° C. and a rotational speed of 50 rpm, the ratio of the viscosity after the standing to the viscosity before the standing (viscosity after standing/viscosity before standing) is less than 100.Type: ApplicationFiled: February 8, 2017Publication date: February 7, 2019Applicant: Sun Medical Co., Ltd.Inventors: Tamaki Otsuki, Tatsuya Ori, Yuya Yamamoto, Takashi Yamamoto, Masami Arata
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Publication number: 20180110683Abstract: The present invention provides polymerizable monomers represented by the following general formula (1) that are useful as dental materials. In the general formula (1), Ra is a divalent C6-9 aromatic hydrocarbon group or a divalent C6-9 optionally bridged cyclic hydrocarbon group, R1 and R2 are each a hydrogen atom or a C1-3 alkyl group, R3, R4, R5 and R6 are each a hydrogen atom or a hydrocarbon group, R7 and R8 are each a hydrogen atom or a methyl group, m and n are each independently 0 to 4, and Rb and Rc are each independently a C2-6 linear alkylene or C2-6 linear oxyalkylene group optionally substituted with a C1-3 alkyl group or a (meth)acryloyloxymethylene group in place of a hydrogen atom.Type: ApplicationFiled: March 31, 2016Publication date: April 26, 2018Applicants: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD.Inventors: Kazuhiko YOSHINAGA, Yoshimitsu TANABE, Shinsuke KINOSHITA, Takenori MITAMURA, Hiroki MURAI, Takeshi YOKOYAMA, Yoshihisa KAMIMOTO, Tatsuya ORI, Hirohisa SHIMIZU, Masami ARATA, Masuji TSUCHIKAWA, Sayaka MIYAMORI, Yoshiaki KATSURA
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Patent number: 8426488Abstract: An easily removable dental curable composition which prevents the fall or leakage of a temporary prosthetic appliance or a root canal filling material which is easily removed by bonding and adhering it to tooth, shows such high flowability that its operation is easy, has a long working time and excellent X-ray contrast properties and sealability and can be easily removed as required, and a filling kit. The dental curable composition comprises (A) a polymerizable monomer mixture containing a polymerizable monomer having an acid group in the molecule and (B) a polymerization initiator, wherein the component (A) contains (A?) a long-chain polymerizable monomer having a structure with a chain length of 17 or more atoms and/or the composition further comprises (D1) a soft resin material.Type: GrantFiled: April 24, 2009Date of Patent: April 23, 2013Assignee: Sun Medical Co., Ltd.Inventors: Tatsuya Ori, Akari Yamamoto, Masami Arata, Maho Yoshikawa
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Patent number: 8362105Abstract: A dental curable composition has a curing time of 30 seconds to 120 minutes and includes a compound having an acidic group in the molecule (A), a polymerizable monomer (B), an organic amine compound (C) and a sulfur-containing reducing compound (D). In the dental curable composition, the content of the component (A) is 0.01 to 80 parts by weight, the content of the component (B) is 21 to 99.8 parts by weight, the content of the component (C) is 0.01 to 30 parts by weight and the content of the component (D) is 0 to 30 parts by weight. The composition may be cured at a relatively low temperature close to the body temperature without using a peroxide-based polymerization initiator, and has good sealing properties and adhesion.Type: GrantFiled: August 8, 2006Date of Patent: January 29, 2013Assignee: Sun Medical Co., Ltd.Inventors: Tatsuya Ori, Haruka Nishitani, Yuya Yamamoto, Takashi Yamamoto
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Patent number: 8297975Abstract: A reaction-curable adhesive composition exhibiting acidity is formed form a weakly acidic to alkaline composition (I) comprising (a) a polymerizable monomer and (b) a compound represented by the following formula (I) and a strongly acidic composition (II) comprising (a) a polymerizable monomer. R1—C6H4—NR2CH2COOR3??(1) wherein R1 and R2 are each independently a hydrogen atom or an alkyl group which may have a functional group, and R3 is a hydrogen atom or a metal atom. The composition containing the polymerizable monomer can be stably stored for a long period of time.Type: GrantFiled: May 14, 2008Date of Patent: October 30, 2012Assignee: Sun Medical Co., Ltd.Inventors: Takashi Yamamoto, Toshiki Ono, Masami Arata, Tatsuya Ori
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Publication number: 20120213832Abstract: A dental curable composition comprises (A) a polymerizable monomer and (B) an organic amine-based polymerization initiator, wherein (A?) a long-chain polymerizable monomer having a chain length of 17 or more atoms is contained in the component (A) and/or (C) a soft resin material are/is contained in the composition, and when the amount (parts by weight) based on 100 parts by weight of the component (A) of the component (A?) is represented by [a?] and the amounts (parts by weight) based on 100 parts by weight of the total of the components (A) and (B) of the components (A), (B) and (C) are represented by (a), (b) and (c), respectively, 70?(a)?99.99, 0.01?(b)?5 30, 1?[a?]/5+(c)/1, 0?[a?]?95, and 0?(c)?250.Type: ApplicationFiled: October 22, 2010Publication date: August 23, 2012Inventors: Tatsuya Ori, Haruka Nishitani, Sayuri Iwasaki, Yuya Yamamoto, Chidzuru Nishimoto
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Patent number: 8129443Abstract: There are provided a novel polymerizable composition having an X-ray contrast property and excellent transparency, a cured product thereof, and a composite material comprising powder of the cured product. More specifically, there are provided a polymerizable composition comprising (A) an inorganic oxide having an X-ray contrast property and an average particle diameter of 100 nm or smaller, (B) a surface modifier, (C) a polymerizable compound and (D) a polymerization initiator, a cured product obtained by polymerizing these components, and a composite material comprising powder of the cured product.Type: GrantFiled: July 17, 2001Date of Patent: March 6, 2012Assignee: Sun Medical Co., Ltd.Inventors: Tatsuya Ori, Yasukazu Saimi, Masayuki Asai
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Publication number: 20110070563Abstract: An easily removable dental curable composition which prevents the fall or leakage of a temporary prosthetic appliance or a root canal filling material which is easily removed by bonding and adhering it to tooth, shows such high flowability that its operation is easy, has a long working time and excellent X-ray contrast properties and sealability and can be easily removed as required, and a filling kit.Type: ApplicationFiled: April 24, 2009Publication date: March 24, 2011Applicant: SUN MEDICAL CO., LTD.Inventors: Tatsuya Ori, Akari Yamamoto, Masami Arata, Maho Yoshikawa
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Publication number: 20100292359Abstract: A reaction-curable adhesive composition exhibiting acidity is formed form a weakly acidic to alkaline composition (I) comprising (a) a polymerizable monomer and (b) a compound represented by the following formula (1) and a strongly acidic composition (II) comprising (a) a polymerizable monomer. R1—C6H4—NR2CH2COOR3??(1) wherein R1 and R2 are each independently a hydrogen atom or an alkyl group which may have a functional group, and R3 is a hydrogen atom or a metal atom. The composition containing the polymerizable monomer can be stably stored for a long period of time.Type: ApplicationFiled: May 14, 2008Publication date: November 18, 2010Applicant: SUN MEDICAL CO., LTD.Inventors: Takashi Yamamoto, Toshiki Ono, Masami Arata, Tatsuya Ori
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Publication number: 20090258966Abstract: An object of the present invention is to provide a dental composition having excellent adhesive effect and simultaneously not causing microleakage. A dental composition of a first embodiment of the present invention includes (A) an acidic-group containing polymerizable monomer, (B) a polymerizable monomer, (C) a filler comprising poly(meth)acrylate particles, (D) a calcium-containing material including tetracalcium phosphate (TTCP) and dicalcium phosphate (DCP), and (E) a polymerization initiator. The component (A) is contained at 16-70 parts by weight based on a total of 100 parts by weight of (A)+(B). The component (B) is contained at 84-30 parts by weight based on a total of 100 parts by weight of (A)+(B). The component (C) is contained at 0.2-297 parts by weight relative to a total of 100 parts by weight of (A)+(B). The component (D) is contained at 0.2-297 parts by weight relative to a total of 100 parts by weight of (A)+(B).Type: ApplicationFiled: October 4, 2006Publication date: October 15, 2009Applicants: NIHON UNIVERSITY, SUN MEDICAL CO., LTD.Inventors: Satoshi Hirayama, Takuji Ikemi, Yasufumi Tsuchiya, Tatsuya Ori, Takashi Yamamoto
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Publication number: 20090137697Abstract: A dental curable composition has a curing time of 30 seconds to 120 minutes and includes a compound having an acidic group in the molecule (A), a polymerizable monomer (B), an organic amine compound (C) and a sulfur-containing reducing compound (D). In the dental curable composition, the content of the component (A) is 0.01 to 80 parts by weight, the content of the component (B) is 21 to 99.8 parts by weight, the content of the component (C) is 0.01 to 30 parts by weight and the content of the component (D) is 0 to 30 parts by weight. The composition may be cured at a relatively low temperature close to the body temperature without using a peroxide-based polymerization initiator, and has good sealing properties and adhesion.Type: ApplicationFiled: August 8, 2006Publication date: May 28, 2009Applicant: SUN MEDICAL CO., LTD.Inventors: Tatsuya Ori, Haruka Nishitani, Yuya Yamamoto, Takashi Yamamoto
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Publication number: 20050123762Abstract: There are provided a novel polymerizable composition having an X-ray contrast property and excellent transparency, a cured product thereof, and a composite material comprising powder of the cured product. More specifically, there are provided a polymerizable composition comprising (A) an inorganic oxide having an X-ray contrast property and an average particle diameter of 100 nm or smaller, (B) a surface modifier, (C) a polymerizable compound and (D) a polymerization initiator, a cured product obtained by polymerizing these components, and a composite material comprising powder of the cured product.Type: ApplicationFiled: July 17, 2001Publication date: June 9, 2005Inventors: Tatsuya Ori, Yasukazu Saimi, Masayuki Asai