Patents by Inventor Kunihiko Murata
Kunihiko Murata 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).
-
Publication number: 20080234525Abstract: A sulfonate catalyst represented by the formula below and a ketone compound are placed in a solvent, and the ketone compound is hydrogenated by mixing in the presence of hydrogen to produce an optically active alcohol.Type: ApplicationFiled: March 10, 2006Publication date: September 25, 2008Applicant: NAGOYA INDUSTRIAL SCIENCE RESEARCH INSTITUTEInventors: Noriyuki Utsumi, Kunihiko Murata, Kunihiko Tsutsumi, Takeaki Katayama, Masahiro Watanabe, Takeshi Ohkuma, Ryoji Noyori
-
Publication number: 20080081911Abstract: The invention provides a method for producing optically active 3-quinuclidinols having one or more substituted groups at the 2-position; wherein 3-quinuclidinones having one or more substituted groups at the 2-position are reacted with compounds providing hydrogen in the presence of a certain metal complex.Type: ApplicationFiled: September 28, 2007Publication date: April 3, 2008Applicant: Kanto Kagaku Kabushiki KaishaInventors: Takeaki Katayama, Kunihiko Murata
-
Patent number: 7332622Abstract: A process for preparing optically active nitro compounds and cyano compounds using a metal complex, which is obtained by reaction of an optically active nitrogen-containing compound and a periodic table group VIII metal complex, in the asymmetric Michael reaction.Type: GrantFiled: September 3, 2004Date of Patent: February 19, 2008Assignee: Kanto Kaguku Kabushiki KaishaInventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Publication number: 20080033221Abstract: A hydrogenation promoter of the present invention is produced by reacting an alkyne compound or an alkene compound, a palladium compound represented by a general formula Pd(II)XjLk (where L represents a monodentate ligand or a polydendate ligand other than a phosphorus-containing ligand (when two or more Ls are present in the compound, the Ls may be the same or different), X represents an anionic group, j represents a value determined according to the valence of X so that Xj has a valence of ?2 as a whole, and k represents an integer in the range of 0 to 4), and a base in an organic solvent. Specifically, The hydrogenation promoter of the invention includes palladium nanoparticles containing the alkyne compound or the alkene compound as an agglomeration-preventing agent.Type: ApplicationFiled: March 30, 2005Publication date: February 7, 2008Applicant: NAGOYA INDUSTRIAL SCIENCE RESEARCH INSTITUTEInventors: Junichi Hori, Kunihiko Murata, Nobuhito Kurono, Takeshi Ohkuma, Ryoji Noyori
-
Publication number: 20070225528Abstract: A ruthenium complex RuCl[(S,S)-Tsdpen](p-cymene) represented by a formula below and a ketone compound are placed in a polar solvent, and the resulting mixture is mixed under pressurized hydrogen to hydrogenate the ketone compound and to thereby produce an optically active alcohol:Type: ApplicationFiled: March 29, 2004Publication date: September 27, 2007Applicant: NAGOYA INDUSTRIAL SCIENCE RESEARCH CENTERInventors: Ryoji Noyori, Takeshi Ohkuma, Kunihiko Tsutsumi, Noriyuki Utsumi, Kunihiko Murata
-
Patent number: 7268250Abstract: A highly efficient process is provided for producing an optically active compound having high optical purity by an asymmetric reaction using as a catalyst a transition metal complex having an optically active nitrogen-containing compound as an asymmetric ligand.Type: GrantFiled: December 31, 2003Date of Patent: September 11, 2007Assignee: Kanto Kagaku Kabushiki KaishaInventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Publication number: 20050101787Abstract: A process for preparing optically active nitro compounds and cyano compounds represented by the chemical formula (C) using a metal complex, which is obtained by reaction of an optically active nitrogen-containing compound and a periodic table group VIII metal complex, in the asymmetric Michael reaction of a compound represented by the chemical formula (A) and a compound represented by the chemical formula (B) according to the claim 1.Type: ApplicationFiled: September 3, 2004Publication date: May 12, 2005Applicant: Kanto Kagaku Kabushiki KaishaInventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Patent number: 6790973Abstract: The invention provides novel ruthenium complexes having an optically active diphosphine compound, which has asymmetry on carbon and is easy to synthesize, as the ligand and a process for preparing optically active alcoholic compounds using said complexes as the catalysts, wherein said process is the process for preparing optically active alcoholic compounds, which are excellent in terms of reactivity, enatioselectivity and the like in an asymmetric hydrogenation of carbonyl compounds compared with conventional ruthenium complex catalysts having an optically active diphosphine compound having the axial chirality or the asymmetry on carbon as the ligand.Type: GrantFiled: December 27, 2002Date of Patent: September 14, 2004Assignee: Kanto Kagaku Kabushiki KaishaInventors: Kunihiko Tsutsumi, Kunihiko Murata, Takeshi Ota, Takao Ikariya
-
Publication number: 20040176616Abstract: A highly efficient process is provided for producing an optically active compound having high optical purity by an asymmetric reaction using as a catalyst a transition metal complex having an optically active nitrogen-containing compound as an asymmetric ligand.Type: ApplicationFiled: December 31, 2003Publication date: September 9, 2004Applicant: KANTO KAGAKU KABUSHIKI KAISHAInventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Patent number: 6686505Abstract: A process for producing an optically active amino alcohol is provided that includes a step in which a nitro ketone or a cyano ketone is reacted with a hydrogen-donating organic or inorganic compound in the presence of a transition metal compound catalyst having an optically active nitrogen-containing compound as an asymmetric ligand to give an optically active nitro alcohol or an optically active cyano alcohol, and a step in which the above optically active alcohol is further reduced to efficiently produce an optically active amino alcohol.Type: GrantFiled: October 31, 2002Date of Patent: February 3, 2004Assignee: Kanto Kaguku Kabushiki KaishaInventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Publication number: 20030171592Abstract: A process for producing an optically active amino alcohol is provided that includes a step in which a nitro ketone or a cyano ketone is reacted with a hydrogen-donating organic or inorganic compound in the presence of a transition metal compound catalyst having an optically active nitrogen-containing compound as an asymmetric ligand to give an optically active nitro alcohol or an optically active cyano alcohol, and a step in which the above optically active alcohol is further reduced to efficiently produce an optically active amino alcohol.Type: ApplicationFiled: October 31, 2002Publication date: September 11, 2003Inventors: Masahito Watanabe, Kunihiko Murata, Takao Ikariya
-
Publication number: 20030166978Abstract: The invention provides novel ruthenium complexes having an optically active diphosphine compound, which has asymmetry on carbon and is easy to synthesize, as the ligand and a process for preparing optically active alcoholic compounds using said complexes as the catalysts, wherein said process is the process for preparing optically active alcoholic compounds, which are excellent in terms of reactivity, enatioselectivity and the like in an asymmetric hydrogenation of carbonyl compounds compared with conventional ruthenium complex catalysts having an optically active diphosphine compound having the axial chirality or the asymmetry on carbon as the ligand.Type: ApplicationFiled: December 27, 2002Publication date: September 4, 2003Applicant: Kanto Kagaku Kabushiki KaishaInventors: Kunihiko Tsutsumi, Kunihiko Murata, Takeshi Ota, Takao Ikariya
-
Patent number: 6500384Abstract: The present invention provides a process for the hardening treatment of sintered members which can impart sufficient wear resistance thereto at low cost without causing a reduction in dimensional accuracy due to heat distortion. This process for the hardening treatment of sintered members comprises the steps of coating an iron-based sinterable member with a Ni—P alloy powder containing 7 to 13% by weight of phosphorus so as to give a coating weight of 0.1 to 1.2 mg/mm2; sintering the iron-based sinterable member coated with the Ni—P alloy powder at a temperature in the range of 1,000 to 1,300° C.; and hardening the iron-based sintered member by cooling it at a cooling rate of not less than 10° C./min. until a temperature of 200° C. is reached.Type: GrantFiled: September 21, 2000Date of Patent: December 31, 2002Assignee: Suzuki Motor CorporationInventors: Toshio Yamauchi, Kunihiko Murata, Susumu Nakano
-
Publication number: 20020164408Abstract: A method of storing and preparing a quick-serving pasta involves placing a serving of pasta into a sealable package; adding a hydrating and preserving solution into the package in a sufficient quantity to cover the pasta; and vacuum sealing the package. When ready to serve the pasta, the package is opened, and the pasta is placed into boiling water for a sufficient time to heat the pasta and to kill any harmful bacteria.Type: ApplicationFiled: April 12, 2002Publication date: November 7, 2002Inventor: Kunihiko Murata
-
Patent number: 6476278Abstract: Alcohols are produced in a practical and advantageous method, by the hydrogenation of a carbonyl compound under mild conditions, by reacting the carbonyl compounds with hydrogen in the presence of a bipyridyl derivative, a group VIII transition metal complex, and a base, or by reducing a carbonyl compound in the presence of a bipyridyl derivative, a group VIII transition metal complex, a base, and an alcoholic solvent.Type: GrantFiled: October 25, 2001Date of Patent: November 5, 2002Assignees: Japan Science and Technology Corporation, Takasago International CorporationInventors: Hideyuki Ikehira, Kunihiko Murata, Eiji Katayama, Masami Kozawa, Toru Yokozawa, Takeshi Ohkuma, Takao Ikariya, Ryoji Noyori
-
Patent number: 5892075Abstract: The object of the invention resides in the development of an improved process for synthesizing metallocene compounds useful as olefin polymerization catalysts.A new process for synthesizing metallocene compounds of formulae (IV) and (IV') comprises a reaction of formula (I) with formula (II) or (II') to afford formula (III) or (III'), and then a reaction of a halogenating agent.In formulae (IV) and (IV') described below, M.sup.1 is a group IV transition-metal atom, L.sup.1 and L.sup.2 can be each other identical or different and are substituted or unsubstituted cyclopentadienyl, substituted or unsubstituted indenyl or substituted or unsubstituted fluorenyl groups, B is a hydrocarbon having 1-20 carbon atoms, silylene having 1-20 carbon atoms, oligosilylene or germylene groups, binding to L.sup.1 and L.sup.2, Y can be identical or different and is each independently of one another a halogen atom. Further, M.sup.1 can be coordinated with an ether or an amine at any coordination number.Type: GrantFiled: September 23, 1997Date of Patent: April 6, 1999Assignee: Kanto Kagaku Kabushiki KaishaInventors: Kunihiko Murata, Junichi Hori, Masahiro Yoshida
-
Patent number: 5859276Abstract: New metallocene compounds (II) and their synthetic intermediates (I) used for olefin polymerization catalysts represented by the general formulas (I) and (II) ##STR1## (wherein X can be identical or different and is each independently of one another a halogen atom, M.sup.1 is a group IV transition metal atom, A is a nitrogen or phosphorus atoms, R.sup.1 is an aryl group, R.sup.2 is a saturated hydrocarbon group having 1-10 carbon atoms, whereby each of R.sup.2 can bind one another to constitute a ring containing A and M.sup.1, L.sup.1 and L.sup.2 can be each other identical or different and are a substituted cyclopentadienyl, indenyl, substituted indenyl or substituted fluorenyl groups, B is a hydrocarbon having 1-20 carbon atoms, silylene having 1-20 carbon atoms, oligosilylene or germylene groups, binding to L.sup.1 and L.sup.2, and M.sup.1 can be also coordinated with an ether or an amine at any coordination number.).Type: GrantFiled: September 23, 1997Date of Patent: January 12, 1999Assignee: Kanto Kagaku Kabushiki KaishaInventors: Kunihiko Murata, Junichi Hori, Masahiro Yoshida
-
Patent number: 5660129Abstract: A sewing machine including a needle bar to which a sewing needle is secured, a needle-bar drive motor which reciprocates the needle bar, a hook, a hook drive motor which rotates the hook, a speed detector which detects a rotation speed of the needle-bar drive motor, an information obtaining device which obtains information indicating that the rotation speed of the needle-bar drive motor will change, and a control device which controls, based on the detected rotation speed of the needle-bar drive motor and the obtained information, the hook drive motor so that the hook is rotated in synchronism with the reciprocation of the needle bar.Type: GrantFiled: February 5, 1996Date of Patent: August 26, 1997Assignee: Brother Kogyo Kabushiki KaishaInventors: Kunihiko Murata, Hideo Kawaguchi
-
Patent number: 5133271Abstract: A workpiece fabric folding device having a label clamping mechanism. The device is operated for folding back an outer end portion of a first workpiece fabric and for stitching the folded back portion to a second workpiece fabric by a sewing machine. In the folding back operation, a label piece is also positioned at the folded back portion for simultaneously stitching the label to the second workpiece fabric. The folding device includes a gauge plate whose outer contour defines a folding-back line of the first workpiece fabric, a bending depression member positioned above the gauge plate for bending the outer edge portion, and a plurality of folding segments for urging the bent outer edge to a position below the gauge plate. The label clamping mechanism is disposed on the bending depression member at a position adjacent the folded-back position. The mechanism includes a label clamping unit which holds one portion of the label, and moving unit for angularly moving the clamping unit to the folded-back position.Type: GrantFiled: November 6, 1991Date of Patent: July 28, 1992Assignee: Brother Kogyo Kabushiki KaishaInventors: Toshiaki Iwasaki, Satoshi Morii, Kunihiko Murata, Hiroyuki Mitsui
-
Patent number: 5074230Abstract: A workpiece fabric holding or clamping device having a lower plate for holding a major part of the workpiece and a plurality of upper plates movable in a horizontal direction above the lower plate for selectively holding the workpiece in combination with the lower plate. The lower plate is formed with an opening whose area covers at least two sewing loci, and the upper plates are each respectively formed with needle slits having two sides. Each side is provided with downwardly extending fabric clamping portions extending into the opening of the lower plate. Through horizontal movements of the plurality of upper plates, at least two sewing loci are defined by the combination of the needle slits. If the slits are positioned spaced away from each other, an auxiliary pressure plate is positioned in the space to hold the spaced portion of the workpiece. Further, the upper plates are vertically movable. The horizontal movements of the upper plates are performed at ascent positions of the upper plates.Type: GrantFiled: September 18, 1990Date of Patent: December 24, 1991Assignee: Brother Kogyo Kabushiki KaishaInventors: Satoshi Morii, Kunihiko Murata, Hiroyuki Mitsui, Toshiaki Iwasaki