Patents by Inventor Yoshimitsu Tanabe
Yoshimitsu Tanabe 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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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: 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: 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: 9511004Abstract: The present invention provides a dental material, a dental material composition and a dental restorative material that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale. The dental material of the present invention includes a specific urethane (meth)acrylic compound represented by Formula (1) described below.Type: GrantFiled: May 15, 2012Date of Patent: December 6, 2016Assignees: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD., SHOFU INC.Inventors: Hiroshi Naruse, Yoshimitsu Tanabe, Osamu Kohgo, Masataka Miyasato, Hideyuki Ueki, Chidzuru Inami, Shunsuke Miyata
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Patent number: 9504632Abstract: The present invention provides a novel compound and a composition including the compound that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale.Type: GrantFiled: May 15, 2012Date of Patent: November 29, 2016Assignees: MITSUI CHEMICALS, INC., SUN MEDICAL CO., LTD., SHOFU INC.Inventors: Hiroshi Naruse, Yoshimitsu Tanabe, Osamu Kohgo, Masataka Miyasato, Hideyuki Ueki, Chidzuru Inami, Shunsuke Miyata
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Patent number: 8778510Abstract: A pyrromethene-boron complex compound represented by the following formula (1); wherein Z1 and Z2 are independently a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group or a substituted or unsubstituted aryloxy group, at least one of Z1 and Z2 is an alkoxy group substituted with a fluorine atom or an aryloxy group substituted with a fluorine atom or a fluoroalkyl group, and Z1 and Z2 may form a ring.Type: GrantFiled: February 25, 2010Date of Patent: July 15, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Fumio Okuda, Kiyoshi Ikeda, Takayasu Sado, Takahiko Ochi, Yoshimitsu Tanabe, Bunji Sawano
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Publication number: 20120296003Abstract: The present invention provides a dental material, a dental material composition and a dental restorative material that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale. The dental material of the present invention includes a specific urethane (meth)acrylic compound represented by Formula (1) described below.Type: ApplicationFiled: May 15, 2012Publication date: November 22, 2012Applicants: MITSUI CHEMICALS, INC, SHOFU INC., SUN MEDICAL CO., LTD.Inventors: Hiroshi NARUSE, Yoshimitsu TANABE, Osamu KOHGO, Masataka MIYASATO, Hideyuki UEKI, Chidzuru INAMI, Shunsuke MIYATA
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Publication number: 20120296061Abstract: The present invention provides a novel compound and a composition including the compound that exhibit small polymerization shrinkage particularly during curing and are producible at low cost on the industrial scale.Type: ApplicationFiled: May 15, 2012Publication date: November 22, 2012Applicant: MITSUI CHEMICALS, INC.Inventors: Hiroshi NARUSE, Yoshimitsu Tanabe, Osamu Kohgo, Masataka Miyasato
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Publication number: 20120037890Abstract: A pyrromethene-boron complex compound represented by the following formula (1); wherein Z1 and Z2 are independently a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkoxy group or a substituted or unsubstituted aryloxy group, at least one of Z1 and Z2 is an alkoxy group substituted with a fluorine atom or an aryloxy group substituted with a fluorine atom or a fluoroalkyl group, and Z1 and Z2 may form a ring.Type: ApplicationFiled: February 25, 2010Publication date: February 16, 2012Inventors: Fumio Okuda, Kiyoshi Ikeda, Takayasu Sado, Takahiko Ochi, Yoshimitsu Tanabe, Bunji Sawano
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Patent number: 6383982Abstract: A color developer composition comprising (A) a color developer containing a polyvalent metal salt of a salicylic acid derivative, and (B) a polyester polyol having in the molecule skeleton at least one carbonate bond or ester bond, and a derivative thereof, an aqueous dispersion and a color developing ink using this color developer composition, and a recording sheet having a layer containing this color developer composition on a base material.Type: GrantFiled: May 2, 2000Date of Patent: May 7, 2002Assignee: Mitsui Chemicals, Inc.Inventors: Jotaro Kida, Yoshimitsu Tanabe, Nobuhiro Takizawa, Masakatsu Nakatsuka
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Patent number: 5647896Abstract: Provided are a color-developing agent comprising a multivalent metal salt of a salicylic acid derivative and a sulfonated phenol and/or a metal salt thereof and having excellent initial and ultimate color-developing capacities and improved waterproofness; and a color-developing sheet making use of the color-developing agent.Type: GrantFiled: October 30, 1995Date of Patent: July 15, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Takeshi Nishimura, Tomoko Kamashita, Masaru Wada, Teruyuki Nagata, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Masakatsu Nakatsuka
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Patent number: 5525686Abstract: A process for preparing a polyvalent metal salt of a salicylic acid resin which comprises the steps of reacting salicylic acid or its derivative with styrene or its derivative at a temperature of -20.degree. C. or higher but lower than 40.degree. C. in the presence of sulfuric acid, and then reacting the resulting reaction product with a polyvalent metal compound; an aqueous dispersion in which the polyvalent metal salt of the resin is dispersed in water; and a developing sheet in which the polyvalent metal salt of the salicylic acid resin is used.Type: GrantFiled: December 13, 1994Date of Patent: June 11, 1996Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yoshimitsu Tanabe, Jotaro Kida, Kiyoharu Hasegawa, Masakatsu Nakatsuka, Masayuki Furuya, Takeshi Nishimura
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Patent number: 5484948Abstract: Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds is also disclosed. The compounds are useful as raw materials for resins, and the resin forming composition and the resin can provide excellent heat resistance and impact resistance and low hygroscopicity.Type: GrantFiled: August 2, 1994Date of Patent: January 16, 1996Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Keizaburo Yamaguchi, Tatsuhiro Urakami, Yoshimitsu Tanabe, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
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Patent number: 5476957Abstract: The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.Type: GrantFiled: November 9, 1994Date of Patent: December 19, 1995Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yoshimitsu Tanabe, Yuki Kobayashi, Atsuo Otsuji, Masakatsu Nakatsuka, Akihiro Yamaguchi
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Patent number: 5447901Abstract: A color-developing composition comprises a multi-valent-metal-modified salicylic acid resin (Resin A) and a polycondensation resin (resin B) at a weight ratio of 90-30 to 10-70. Resin A is composed of 5-35 mole % of a structural unit (I) and 65-95 mole % of at least one structural unit (II) or 65-95 mole % of a coupled structural unit of at least one unit (II) and at least one unit (III) and has a weight-average molecular weight of 350-5,000. Resin B is composed of the unit (II) and/or the unit (III) and has a weight-average molecular weight of 350-5,000. ##STR1## wherein Z represents M/m, M being a metal ion of m valence and m being an integer; R.sub.1 and R.sub.2 represent H or a C.sub.1-12 alkyl, aralkyl, aryl or cycloalkyl group; R.sub.3 and R.sub.6 represent H or a C.sub.1-4 alkyl group; and R.sub.4 and R.sub.5 represent H or CH.sub.3.Type: GrantFiled: August 26, 1994Date of Patent: September 5, 1995Assignee: Mitsui Toatsu Chemical, Inc.Inventors: Keizaburo Yamaguchi, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Akihiro Yamaguchi
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Patent number: 5391806Abstract: Heat-sensitive recording materials contain an electron-donating chromogenic compound and an electron-attracting compound. The recording materials also contain at least one compound represented by the following formula: ##STR1## wherein R.sub.1 and R.sub.3 mean a hydrogen atom or an alkyl, aralkyl or aryl group, R.sub.2 and R.sub.4 denote an alkyl, alkenyl, aralkyl or aryl group, X.sub.1, X.sub.2, Y.sub.1 and Y.sub.2 stand for an oxygen or a sulfur atom, and --Z.sub.1 -- and --Z.sub.2 -- are a specific aromatic group. Also provided are phenol compounds represented by the following formula: ##STR2## wherein R.sub.1, R.sub.2, X.sub.1 and Y.sub.1 have the same meanings as defined above; R.sub.5 and R.sub.6 are a hydrogen or halogen atom or an alkyl, alkoxy, aralkyl, aryl or hydroxyl group; p and q stand for an integer of 1-4; R.sub.5 and R.sub.6 may be either the same or different when p and q represent an integer of 2 or greater; and --Z.sub.3 -- means a specific divalent group.Type: GrantFiled: October 5, 1993Date of Patent: February 21, 1995Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Atsuo Otsuji, Toshihiro Motoshima, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Kazuyoshi Kikkawa, Masakatsu Nakatsuka, Akihiro Yamaguchi
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Patent number: 5376615Abstract: A color-developing composition comprises a multi-valent-metal-modified salicylic acid resin (Resin A) and a polycondensation resin (resin B) at a weight ratio of 90-30 to 10-70. Resin A is composed of 5-35 mole % of a structural unit (I) and 65-95 mole % of at least one structural unit (II) or 65-95 mole % of a coupled structural unit of at least one unit (II) and at least one unit (III) and has a weight-average molecular weight of 350-5,000. Resin B is composed of the unit (II) and/or the unit (III) and has a weight-average molecular weight of 350-5,000. ##STR1## wherein Z represents M/m, M being a metal ion of m valence and m being an integer; R.sub.1 and R.sub.2 represent H or a C.sub.1-12 alkyl, aralkyl, aryl or cycloalkyl group; R.sub.3 and R.sub.6 represent H or a C.sub.1-4 alkyl group; and R.sub.4 and R.sub.5 represent H or CH.sub.3.Type: GrantFiled: July 20, 1992Date of Patent: December 27, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Keizaburo Yamaguchi, Yoshimitsu Tanabe, Kiyoharu Hasegawa, Akihiro Yamaguchi
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Patent number: 5364967Abstract: Disclosed is an aromatic diamine compound represented by the formula (I) ##STR1## wherein R is H or CH.sub.3. Also disclosed is a bismaleimide compound represented by the formula (IV) ##STR2## wherein R is H or CH.sub.3, A resin forming composition comprising these compounds is also disclosed. The compounds are useful as raw materials for resins, and the resin forming composition and the resin can provide excellent heat resistance and impact resistance and low hygroscopicity.Type: GrantFiled: January 19, 1993Date of Patent: November 15, 1994Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Keizaburo Yamaguchi, Tatsuhiro Urakami, Yoshimitsu Tanabe, Midori Yamazaki, Shoji Tamai, Norimasa Yamaya, Masahiro Ohta, Akihiro Yamaguchi
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Patent number: 5326739Abstract: A color-developing sheet using, as a color developer, polyvalent-metal-modified products of salicylic acid compounds composed mainly of a 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative obtained by reacting a salicylic acid ester with an .alpha.-methylbenzyl halide in the presence of an acid catalyst and hydrolyzing the reaction product.Said color-developing sheet has excellent color developability at low temperatures and gives a color of excellent water resistance.Type: GrantFiled: October 12, 1993Date of Patent: July 5, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Yoshimitsu Tanabe, Keizaburo Yamaguchi, Akihiro Yamaguchi