Patents by Inventor Kazuhiko Saigo
Kazuhiko Saigo 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: 8710263Abstract: There is provided a compound or the like which can become a material in which many functions are controllable. A first aspect of the present invention lies in an organic semiconductor compound, characterized in that an organic molecule which becomes a donor is formed by being salt-formed with an inorganic acid or an inorganic base and self assembly is accomplished. According to this configuration, there can be obtained an organic semiconductor compound by a simple technique. A second aspect of the present invention lies in an organic compound, characterized in that a compound containing a tetrathiafulvalene affinity region in a framework thereof and having a protic acid functional group is formed by being induced to a salt with ammonia or a salt with hydroxyamine. According to this configuration, there can be obtained an organic compound in which many functions are controllable.Type: GrantFiled: June 25, 2013Date of Patent: April 29, 2014Assignee: National Institute for Materials ScienceInventors: Kazuhiko Saigo, Yuka Kobayashi
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Publication number: 20140012017Abstract: There is provided a compound or the like which can become a material in which many functions are controllable. A first aspect of the present invention lies in an organic semiconductor compound, characterized in that an organic molecule which becomes a donor is formed by being salt-formed with an inorganic acid or an inorganic base and self assembly is accomplished. According to this configuration, there can be obtained an organic semiconductor compound by a simple technique. A second aspect of the present invention lies in an organic compound, characterized in that a compound containing a tetrathiafulvalene affinity region in a framework thereof and having a protic acid functional group is formed by being induced to a salt with ammonia or a salt with hydroxyamine. According to this configuration, there can be obtained an organic compound in which many functions are controllable.Type: ApplicationFiled: June 25, 2013Publication date: January 9, 2014Inventors: Kazuhiko SAIGO, Yuka KOBAYASHI
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Patent number: 8501801Abstract: Disclosed is, for example, a compound that can be a material which can control many functions. According to a first aspect of the present invention, there is provided an organic semiconductor compound characterized in that the organic semiconductor compound is produced by forming a salt of organic molecules as a donor with an inorganic acid or an inorganic base and causes self-accumulation. According to the above constitution, the organic semiconductor compound can be obtained in a simple manner. According to a second aspect of the present invention, there is provided an organic compound characterized by being produced by deriving an ammonia salt or a hydroxyamine salt from a compound having a tetrathiafulvalene analogue site in the skeleton thereof and containing a protonic acid functional group. According to the above constitution, an organic compound which can control many functions can be obtained.Type: GrantFiled: February 15, 2009Date of Patent: August 6, 2013Assignee: National Institute for Materials ScienceInventors: Kazuhiko Saigo, Yuka Kobayashi
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Publication number: 20110040106Abstract: Disclosed is, for example, a compound that can be a material which can control many functions. According to a first aspect of the present invention, there is provided an organic semiconductor compound characterized in that the organic semiconductor compound is produced by forming a salt of organic molecules as a donor with an inorganic acid or an inorganic base and causes self-accumulation. According to the above constitution, the organic semiconductor compound can be obtained in a simple manner. According to a second aspect of the present invention, there is provided an organic compound characterized by being produced by deriving an ammonia salt or a hydroxyamine salt from a compound having a tetrathiafulvalene analogue site in the skeleton thereof and containing a protonic acid functional group. According to the above constitution, an organic compound which can control many functions can be obtained.Type: ApplicationFiled: February 15, 2009Publication date: February 17, 2011Applicant: THE UNIVERSITY OF TOKYOInventors: Kazuhiko Saigo, Yuka Kobayashi
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Publication number: 20020177736Abstract: The present invention relates to a compound which is expected to be a synthetic intermediate for medicines and pesticides or a separating agent for chromatography or a enantiomerically resolving agent for racemic bodies. That is, it provides 3-amino-1-indanol represented by the formula (I), a process for synthesizing it, an enantiomerically active compound of 3-amino-1-indanol and a process for enantiomerically resolving 3-amino-1-indanol, and a separating agent for enantiomeric isomers comprising enantiomerically active compound thereof as an effective ingredient.Type: ApplicationFiled: April 15, 2002Publication date: November 28, 2002Inventors: Kazuhiko Saigo, Kazushi Kinbara, Yoshiyuki Katsumata
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Patent number: 6479702Abstract: The present invention relates to a compound which is expected to be a synthetic intermediate for medicines and pesticides or a separating agent for chromatography or a enantiomerically resolving agent for racemic bodies. That is, it provides 3-amino-1-indanol represented by the formula (I), a process for synthesizing it, an enantiomerically active compound of 3-amino-1-indanol and a process for enantiomerically resolving 3-amino-1-indanol, and a separating agent for enantiomeric isomers comprising enantiomerically active compound thereof as an effective ingredient. In the formula, the configuration between OH group and NH2 group are cis-configuration or trans-configuration and the compound may be a racemic body or an enantiomerically active compound.Type: GrantFiled: April 15, 2002Date of Patent: November 12, 2002Assignee: Daicel Chemical Industries, Ltd.Inventors: Kazuhiko Saigo, Kazushi Kinbara, Yoshiyuki Katsumata
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Patent number: 6342636Abstract: Disclosed is a process for preparing an optically active 1-aryl- or 2-aryl-alkylamines of formulas Ia, Ib and Ic with high optical purity and high yield. The process uses an optically active 1- or 2-naphthylglycolic acid of the general formula II as a resolving agent.Type: GrantFiled: October 28, 1998Date of Patent: January 29, 2002Assignee: Yamakawa Chemical Industry Co., Ltd.Inventors: Kazuhiko Saigo, Yukihiko Hashimoto, Kazushi Kinbara, Yoshiko Harada, Kenichi Sakai
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Patent number: 6288268Abstract: A catalyst for the bisalkoxycarbonylation of olefins comprising a noble metal compound and a phosphine chalcogenide of the following formula (1): wherein each of R1, R2 and R3 is, independently, an alkyl group or an aryl group each of which may have a substituent, and A is a Group 16 element of the Periodic Table; and R1, R2 or R3 may be combined, directly or through a bridging group, with one another where the groups to be combined may be attached either to an identical phosphorus atom or to different phosphorus atoms. Element A includes oxygen, sulfur and selenium atoms. The noble metal compound includes palladium(II) halides and other palladium compounds. The catalyst may further include a copper(I) halide or other copper compound as a co-catalyst. The use of this catalyst can provide the bisalkoxycarbonylation of olefins with efficiency.Type: GrantFiled: September 13, 2000Date of Patent: September 11, 2001Assignee: Daicel Chemical Industries, Ltd.Inventors: Kazuhiko Saigo, Yukihiko Hashimoto, Minoru Hayashi
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Patent number: 6184390Abstract: A catalyst for the bisalkoxycarbonylation of olefins comprising a noble metal compound and a phosphine chalcogenide of the following formula (1): wherein each of R1, R2 and R3 is, independently, an alkyl group or an aryl group each of which may have a substituent, and A is a Group 16 element of the Periodic Table; and R1, R2 or R3 may be combined, directly or through a bridging group, with one another where the groups to be combined may be attached either to an identical phosphorus atom or to different phosphorus atoms. Element A includes oxygen, sulfur and selenium atoms. The noble metal compound includes palladium(II) halides and other palladium compounds. The catalyst may further include a copper(I) halide or other copper compound as a co-catalyst. The use of this catalyst can provide the bisalkoxycarbonylation of olefins with efficiency.Type: GrantFiled: September 27, 1999Date of Patent: February 6, 2001Assignee: Daicel Chemical Industries, Ltd.Inventors: Kazuhiko Saigo, Yukihiko Hashimoto, Minoru Hayashi
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Patent number: 6159891Abstract: A catalyst for the bisalkoxycarbonylation of olefins comprising a noble metal compound and a phosphine chalcogenide of the following formula (1): ##STR1## wherein each of R.sup.1, R.sup.2 and R.sup.3 is, independently, an alkyl group or an aryl group each of which may have a substituent, and A is a Group 16 element of the Periodic Table; and R.sup.1, R.sup.2 or R.sup.3 may be combined, directly or through a bridging group, with one another where the groups to be combined may be attached either to an identical phosphorus atom or to different phosphorus atoms. Element A includes oxygen, sulfur and selenium atoms. The noble metal compound includes palladium(II) halides and other palladium compounds. The catalyst may further include a copper (I) halide or other copper compound as a co-catalyst. The use of this catalyst can provide the bisalkoxycarbonylation of olefins with efficiency.Type: GrantFiled: June 14, 1999Date of Patent: December 12, 2000Assignee: Daicel Chemical Industries, Ltd.Inventors: Kazuhiko Saigo, Yukihiko Hashimoto, Minoru Hayashi
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Patent number: 5089642Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support.Type: GrantFiled: October 26, 1990Date of Patent: February 18, 1992Assignee: Daicel Chemical Industries, Ltd.Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana
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Patent number: 5041573Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support. ##STR1## [wherein Ph represents a phenyl group, R represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10, or an aryl group having the carbon number of 6 to 10, X represents an --O-- group or a --S-- group, and Z represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10 or a metal element].Type: GrantFiled: October 18, 1989Date of Patent: August 20, 1991Assignee: Daicel Chemical Industries, Ltd.Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana
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Patent number: 4966985Abstract: A carboalkylated amino alcohol having each of the below shown formulae is novel and optically active. A separating agent comprising the alcohol and a support is effectively useful to separate a variety of racemates for example with chromatography. The alcohol may be chemically or physically combined with the support. ##STR1## [wherein Ph represents a phenyl group, R represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10, or an aryl group having the carbon number of 6 to 10, X represents an --0-- group or a --S-- group, and Z represents a hydrogen atom, an alkyl group having the carbon number of 1 to 10 or a metal element].Type: GrantFiled: December 24, 1986Date of Patent: October 30, 1990Assignee: Daicel Chemical Industries, Ltd.Inventors: Masaki Hasegawa, Kazuhiko Saigo, Yoichi Yuki, Kouzou Tachibana
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Patent number: 4206310Abstract: An improved process for producing an ester from a carboxylic acid and an alcohol which comprises reacting said carboxylic acid with said alcohol by the use of a 1-substituted-2-halopyridinium salt or a 1-substituted-2-haloquinolinium salt as a condensing agent in the presence of a hydrogen halide captor. According to this process, various esters, even if they have some steric hindrances, may be obtained in good yields.Type: GrantFiled: September 8, 1978Date of Patent: June 3, 1980Assignee: Sumitomo Chemical Company, LimitedInventors: Teruaki Mukaiyama, Masahiro Usui, Kazuhiko Saigo, Eiichiro Shimada
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Patent number: 4105673Abstract: An improved process for producing a large ring lactone which comprises subjecting a hydroxy acid to intramolecular condensation by the use of a 1-substituted-2-halopyridinium salt or a 1-substituted-2-haloquinolinium salt as a condensing agent in the presence of an acid captor in an anhydrous organic solvent. According to this process, a variety of lactones, even complex lactones such as macrolides can be obtained in good yields.Type: GrantFiled: September 20, 1976Date of Patent: August 8, 1978Assignee: Sumitomo Chemical Company, LimitedInventors: Teruaki Mukaiyama, Masahiro Usui, Kazuhiko Saigo