Patents by Inventor Michihiko Miyamoto
Michihiko Miyamoto 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: 20230391722Abstract: A method includes producing a diiminopyrrole compound by mixing an aromatic 3-pyrroline compound, an iodinating agent, and ammonia based on Chemical Formula 1 below, in which ring A is an aromatic group:Type: ApplicationFiled: October 12, 2021Publication date: December 7, 2023Applicant: GODO SHIGEN CO., LTD.Inventors: Michihiko MIYAMOTO, Hiroto KOMATSU, Shinichiro YAMADA, Takuya JITSUKAWA, Koichi TAGAMI, Takahiro YAMAMOTO, Hideo TOGO
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Patent number: 11407849Abstract: A method for manufacturing a graft polymer, that ensures more stable progress of a living radical polymerization by using a monomer structural unit containing an iodine initiating group as an initiator, includes performing a living radical polymerization of a compound with a vinyl monomer by an organic catalyst to manufacture the graft polymer. The compound has a recurring unit represented by a formula (1) below in a main chain: where, R1: linking group (linear, branched, or cyclic alkylene group having 1 to 30 carbon atoms that may contain an ether bond, an amide bond, or an ester bond, an aromatic group), R2, R3, R4, R5, R6: an aromatic group, an aliphatic group, a hydrogen atom, an aliphatic group, and n=1 to 5.Type: GrantFiled: March 1, 2018Date of Patent: August 9, 2022Assignees: GODO SHIGEN CO., LTD, NANYANG TECHNOLOGICAL UNIVERSITYInventors: Yoshinobu Tsujii, Keita Sakakibara, Atsushi Goto, Michihiko Miyamoto, Hiroto Komatsu, Takuya Jitsukawa
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Publication number: 20210163656Abstract: A method for manufacturing a graft polymer, that ensures more stable progress of a living radical polymerization by using a monomer structural unit containing an iodine initiating group as an initiator, includes performing a living radical polymerization of a compound with a vinyl monomer by an organic catalyst to manufacture the graft polymer. The compound has a recurring unit represented by a formula (1) below in a main chain: where, R1: linking group (linear, branched, or cyclic alkylene group having 1 to 30 carbon atoms that may contain an ether bond, an amide bond, or an ester bond, an aromatic group), R2, R3, R4, R5, R6: an aromatic group, an aliphatic group, a hydrogen atom, an aliphatic group, and n=1 to 5.Type: ApplicationFiled: March 1, 2018Publication date: June 3, 2021Applicants: KYOTO UNIVERSITY, NANYANG TECHNOLOGICAL UNIVERSITY, GODO SHIGEN CO., LTD.Inventors: Yoshinobu TSUJII, Keita SAKAKIBARA, Atsushi GOTO, Michihiko MIYAMOTO, Hiroto KOMATSU, Takuya JITSUKAWA
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Publication number: 20210070687Abstract: The present invention's purpose is to provide: a molecular-weight controlling agent for radical polymerization which enables controlled radical polymerization of a water-soluble monomer in an aqueous medium; a method for producing a polymer of a water-soluble vinyl monomer using the same; and a water-soluble vinyl monomer polymer. The present invention provides a molecular-weight controlling agent for radical polymerization characterized in that the agent comprises, as its active ingredient, an iodine compound represented by formula (1) and in that the solubility of the active ingredient in water is 0.5 weight % or more at 20° C. In the formula, R1 is —COOX, —CONR4R5, an aromatic group or a cyano group, X is a hydrogen atom, an aliphatic group, an alkali metal, an alkaline earth metal, an organic ammonium or an ammonium, and R2, R3, R4 and R5 are each independently a hydrogen atom, an aromatic group or an aliphatic group.Type: ApplicationFiled: March 15, 2018Publication date: March 11, 2021Inventors: Toru Miyajima, Yusuke Matsubara, Michihiko Miyamoto, Hiroto Komatsu, Yu Yamaguchi, Takuya Jitsukawa
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Patent number: 10414848Abstract: A living radical polymerization initiator represented by the following: wherein, R1 represents an aromatic, an alkylcarbonyl, an alkoxycarbonyl, an aminocarbonyl, an alkylaminocarbonyl, a dialkylaminocarbonyl, an arylcarbonyl, an alkylsulfonyl, an aryl sulfonyl or combinations thereof; R2, R3, R4 and R5 are a hydrogen, an aliphatic, an aromatic, an alkylcarbonyl, an alkoxycarbonyl, an aminocarbonyl, an alkylaminocarbonyl, a dialkylaminocarbonyl, an arylcarbonyl, a carboxy, an alkylsulfonyl or an aryl sulfonyl; X and Y are a halogen; m and n are an integer of 1 or more, and are non-symmetrical so that X and Y have different reactivities to initiate a living radical polymerization.Type: GrantFiled: August 7, 2015Date of Patent: September 17, 2019Assignees: KYOTO UNIVERSITY, GOOD SHIGEN CO., LTDInventors: Atsushi Goto, Michihiko Miyamoto, Hiroto Komatsu, Yu Yamaguchi, Takuya Jitsukawa
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Publication number: 20170306073Abstract: A living radical polymerization initiator represented by the following: wherein, R1 represents an aromatic, an alkylcarbonyl, an alkoxycarbonyl, an aminocarbonyl, an alkylaminocarbonyl, a dialkylaminocarbonyl, an arylcarbonyl, an alkylsulfonyl, an aryl sulfonyl or combinations thereof; R2, R3, R4 and R5 are a hydrogen, an aliphatic, an aromatic, an alkylcarbonyl, an alkoxycarbonyl, an aminocarbonyl, an alkylaminocarbonyl, a dialkylaminocarbonyl, an arylcarbonyl, a carboxy, an alkylsulfonyl or an aryl sulfonyl; X and Y are a halogen; m and n are an integer of 1 or more, and are non-symmetrical so that X and Y have different reactivities to initiate a living radical polymerization.Type: ApplicationFiled: August 7, 2015Publication date: October 26, 2017Applicants: KYOTO UNIVERSITY, GODO SHIGEN CO., LTD.Inventors: Atsushi GOTO, Michihiko MIYAMOTO, Hiroto KOMATSU, Yu YAMAGUCHI, Takuya JITSUKAWA
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Patent number: 6118007Abstract: A process, as a substitute for hydrolysis, for preparing a nitroguanidine derivative represented by the following formula (2): ##STR1## wherein A represents a substituted or unsubstituted aromatic or non-aromatic hydrocarbon ring, a substituted or unsubstituted aromatic or non-aromatic heterocycle, a hydrogen atom or a substituted or unsubstituted alkyl, alkenyl or alkynyl group; and R.sub.2 represents a hydrogen atom, a substituted or unsubstituted C.sub.1-6 alkyl, alkenyl or alkynyl group, which comprises reacting a compound represented by the following formula (1): ##STR2## wherein R.sub.1 represents a substituted or unsubstituted, linear or cyclic C.sub.1-10 alkyl group and A and R.sub.2 have the same meanings as defined above, with ammonia, a primary amine or a secondary amine, or a salt thereof.Type: GrantFiled: March 24, 1998Date of Patent: September 12, 2000Assignee: Mitsui Chemicals, Inc.Inventors: Koichi Ebihara, Tatsuo Kaiho, Michihiko Miyamoto, Daisuke Ura
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Patent number: 5917010Abstract: The invention relates to a preparation process of aliphatic polyester, comprising using an ion exchange resin as a drying agent and after the dehydration polycondensation reaction, regenerating and drying the used ion exchange resin and repeatedly using said ion exchange resin in the next dehydration polycondensation reaction, in a process for preparing aliphatic polyester from one or more aliphatic compound (A) by heating in an organic solvent in the presence of a catalyst, distilling a generated water containing organic solvent out of the reaction system, treating the distilled organic solvent with a drying agent, and returning the treated solvent to the reaction system to progress a dehydration polycondensation reaction. The process of the invention enables one to steadily and efficiently prepare in industry an aliphatic polyester having an excellent color tone, high molecular weight and high quality.Type: GrantFiled: August 26, 1997Date of Patent: June 29, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Kenichi Goto, Yukiko Mori, Michihiko Miyamoto
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Patent number: 5770683Abstract: A preparation process of polyhydroxycarboxylic acid comprising conducting dehydration polycondensation of hydroxycarboxylic acid or an oligomer of the same in a reaction mixture containing said hydroxycarboxylic acid or the oligomer of the same and an organic solvent substantially in the absence of water to give polyhydroxycarboxylic acid having an weight average molecular weight of 50,000 or more, successively mixing the reaction mixture containing said polyhydroxycarboxylic acid with at least one binder selected from the group consisting of (1) polyisocyanate compound, (2) polybasic acid anhydride, (3) cyclic imino ester, (4) cyclic imino ether, (5) aromatic hydroxycarboxylic acid, (6) polyamino compound, (7) polyhydric alcohol, (8) epoxy compound, (9) polyfunctional aziridine compound, (10) lactam, (11) lactone, and (12) diethylene glycol bischloroforate, and reacting to obtain polyhydroxycarboxylic acid having a weight average molecular weight of 100,000 or more the polyhydroxycarboxylic acid which is obtType: GrantFiled: October 20, 1995Date of Patent: June 23, 1998Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Yasunori Yoshida, Michihiko Miyamoto, Shoji Obuchi, Kan Ideda, Masahiro Ohta
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Patent number: 5629321Abstract: The invention relates to a novel compound which is represented by the formula (1) and has an excellent platelet aggregation inhibiting action based on fibrinogen antagonism. The platelet aggregation inhibitor containing the compound of the formula (1) as an effective ingredient are effective for prevention and curing of thrombosis and restenosis or reocclusion after percutaneous transluminal coronary angioplasty or percutaneous transluminal coronary recanalization.Type: GrantFiled: October 18, 1995Date of Patent: May 13, 1997Assignee: Mitsui Toatsu Chemicals, Inc.Inventors: Kunio Okumura, Isao Yokoyama, Toshiyuki Shimazaki, Michihiko Miyamoto, Hiroyuki Yamashita, Kenji Kibayashi, Takanori Yutaka, Kouhei Yazawa
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Patent number: 5332739Abstract: Pyrimidinedione derivatives of the formula: ##STR1## wherein R.sup.1 and R.sup.2 is so linked with each other as to make an alkylene chain and thus form a heterocyclic structure, A, R.sup.3, R.sup.4, X.sup.1, X.sup.2 and X.sup.3 are substituents, respectively, and n is 2 or 3 have a basic backbone in which a phenyl group part and a pyrimidinedione part are linked by a structure comprising an alkyl chain and a heterocyclic ring having two nitrogen atoms. These compounds are useful for a medical treatment of cardiac arrhythmias.Type: GrantFiled: November 2, 1992Date of Patent: July 26, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tsutomu Katakami, Tatsuro Yokoyama, Michihiko Miyamoto, Haruki Mori, Nobuya Kawauchi, Tadahito Nobori, Joji Kamiya, Masaaki Ishii
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Patent number: 5308848Abstract: A pyrimidinedione derivative compound has a basic backbone in which a phenyl group part and a pyrimidinedione part are linked by a linking structure comprising an alkyl chain containing two nitrogen atoms. This linking structure is represented by ##STR1## [wherein A is --(CH.sub.2).sub.n --, --CO-- or --O--(CH.sub.2).sub.m --; each of R.sup.1 and R.sup.2 is independently a hydrogen atom or a lower alkyl group which may be substituted by a hydroxyl group, or R.sup.1 and R.sup.2 may be so linked with each other as to make an alkylene chain and thus form a heterocyclic structure; R.sup.5 is a halogen atom, a hydroxyl group, a lower alkyloxycarbonyl group, a lower alkyloxy group which may be substituted by a lower alkyloxy group, or a lower alkyl group which may be substituted by a hydroxyl group, or R.sup.5 may be so linked with R.sup.1 as to make an alkylene chain and thus form a heterocyclic structure; n is 0, 1, 2 or 3 (when R.sup.5 is the hydroxyl group, n.noteq.Type: GrantFiled: August 12, 1992Date of Patent: May 3, 1994Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Michihiko Miyamoto, Tsutomu Katakami, Nobuya Kawauchi, Tadahito Nobori, Joji Kamiya, Masaaki Ishii
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Pyrimidinedione compounds, method of producing the same and antiarrythmic agents containing the same
Patent number: 5008267Abstract: A pyrimidinedione derivative compound has a basic backbone in which a phenyl group part and a pyrimidinedione part are linked by a structure comprising an alkyl chain containing at least two nitrogen atoms. The pyrimidinedione derivative is useful for a medical treatment of cardiac arrhythmias.Type: GrantFiled: October 24, 1989Date of Patent: April 16, 1991Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tsutomu Katakami, Tatsuro Yokoyama, Michihiko Miyamoto, Haruki Mori, Nobuya Kawauchi, Tadahito Nobori, Kunio Sannohe, Joji Kamiya, Masaaki Ishii, Kanji Yoshihara