Patents by Inventor Yoshiaki Kuroki
Yoshiaki Kuroki 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: 7887684Abstract: A gas sensor element having an element body, the element body including: a ceramic heater having ceramic layers and a heater element embedded in the ceramic layers; and a solid electrolyte layer including a detection section covered by a pair of electrodes, the solid electrolyte layer being laminated together with the ceramic heater. Furthermore, the element body has a width at a front portion including the detection section smaller than at a rear portion, and at least both side edge faces of the front portion of the element body are covered with a porous layer.Type: GrantFiled: July 6, 2005Date of Patent: February 15, 2011Assignee: NGK Spark Plug Co., Ltd.Inventors: Shinya Awano, Keisuke Makino, Yoshiaki Kuroki, Takao Kojima, Masashi Ando
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Patent number: 7309718Abstract: The present invention discloses a dibenzocycloheptene compound represented by the formula (I): wherein R1: hydrogen atom, halogen atom, etc., R2: hydrogen atom, halogen atom, etc., A: 5-membered or 6-membered heteroaromatic ring group containing 1 to 3 hetero atom(s) selected from the group consisting of nitrogen atom, oxygen atom and sulfur atom, and the heteroaromatic ring group, etc. may have halogen atom, nitrogen atom, etc. as substituent(s), B: formula; —CH?CH—, formula; —CH2O—, etc., Y: C1-C10 alkylene group which may have halogen atom, etc. as substituent(s), etc., Z: carboxyl group which may be protected, etc.Type: GrantFiled: June 27, 2002Date of Patent: December 18, 2007Assignee: UBE Industries, Ltd.Inventors: Yoshiaki Kuroki, Hitoshi Ueno, Tetsushi Katsube, Tetsuo Kawaguchi, Eiji Okanari, Ichiro Tanaka, Masayuki Tanaka, Masahiko Hagihara
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Publication number: 20070007136Abstract: A gas sensor element having an element body, the element body including: a ceramic heater having ceramic layers and a heater element embedded in the ceramic layers; and a solid electrolyte layer including a detection section covered by a pair of electrodes, the solid electrolyte layer being laminated together with the ceramic heater. Furthermore, the element body has a width at a front portion including the detection section smaller than at a rear portion, and at least both side edge faces of the front portion of the element body are covered with a porous layer.Type: ApplicationFiled: July 6, 2005Publication date: January 11, 2007Inventors: Shinya Awano, Keisuke Makino, Yoshiaki Kuroki, Takao Kojima, Masashi Ando
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Patent number: 7041207Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: GrantFiled: September 23, 2002Date of Patent: May 9, 2006Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Patent number: 6936148Abstract: A sensor element including an insulative base (11), a heating resistor (12), an oxygen pump cell (13), an oxygen detection cell (14), and a diffusion-chamber-forming member (161) having a rate-controlling introduction portion (163) and defining a diffusion chamber (16) in cooperation with electrodes (1321, 1421), wherein these components have been subjected to simultaneous firing (i.e., cofiring) to form a unitary sensor element. A partition wall (162), which extends from the diffusion-chamber-forming member and is made of alumina, is joined to a surface of a solid electrolyte (131) between two electrodes (1321, 1322) of an Ip cell. Preferably, a region within 20 ?m from the plane of junction joining the partition wall (162) to the solid electrolyte (131) contains no portion whose amount of non-alumina substances exceeds by 2% by mass (by weight) or more the amount of non-alumina substances of the diffusion-chamber-forming member (161).Type: GrantFiled: October 15, 2002Date of Patent: August 30, 2005Assignee: NGK Spark Plug Co., Ltd.Inventors: Tomohiro Mabuchi, Yoshiaki Kuroki, Shinya Awano, Hiroyuki Hayashi, Kunio Yanagi
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Publication number: 20040180884Abstract: The present invention discloses a dibenzocycloheptene compound represented by the formula (I): 1Type: ApplicationFiled: December 23, 2003Publication date: September 16, 2004Inventors: Yoshiaki Kuroki, Hitoshi Ueno, Tetsushi Katsube, Tetsuo Kawaguchi, Eiji Okanari, Ichiro Tanaka, Masayuki Tanaka, Masahiko Hagihara
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Patent number: 6746586Abstract: A multi-layer gas sensor element is described which comprises a solid electrolytic member, a substrate, and a porous member, wherein each of the substrate and the porous member has a thickness larger than that of the solid electrolytic member with respect to a lamination direction; the substrate and the porous member face each other and sandwich the solid electrolytic member; a ceramic component constituting the substrate in the highest volume percent is the same as the ceramic component constituting the porous member in the highest volume percent thereof; and the volume percent (R2) of the ceramic component contained in the porous member is 80% or more the volume percent (R1) of the ceramic component contained in the substrate.Type: GrantFiled: July 31, 2001Date of Patent: June 8, 2004Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshiaki Kuroki, Kunio Yanagi, Tomohiro Mabuchi, Shinya Awano, Hiroyuki Hayashi
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Publication number: 20040104115Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: ApplicationFiled: November 10, 2003Publication date: June 3, 2004Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Publication number: 20040094417Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: ApplicationFiled: November 10, 2003Publication date: May 20, 2004Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Publication number: 20040015356Abstract: The invention aims at providing voice recognition apparatus which can perform training without a speaker being conscious thereof by utilizing the fact that the name of a distant party is frequently uttered at the beginning of conversation over telephone and increase the recognition ratio and recognition speed of the speaker dependent system as the speaker uses the voice recognition apparatus. The invention includes a voice recognition processor of the speaker independent system for comparing acoustic data obtained by splitting an input sound signal with a plurality of word acoustic data and detecting word acoustic data matching the split acoustic data, wherein the voice recognition processor sequentially compares word acoustic data generated from a phoneme model with acoustic data generated from a name uttered by the speaker, and stores the acoustic data identifier corresponding to the generated acoustic data, which match the word acoustic data, as a training signal.Type: ApplicationFiled: July 16, 2003Publication date: January 22, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Kenji Nakamura, Hiroshi Harada, Yoshiyuki Ogata, Masakazu Tachiyama, Tatsuhiro Goto, Yasuyuki Nishioka, Yoshiaki Kuroki
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Patent number: 6676817Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: GrantFiled: February 3, 2000Date of Patent: January 13, 2004Assignee: NGK Spark Plug Co., Ltd.Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Publication number: 20030216571Abstract: The present invention is to provide novel tricyclic compounds having leukotriene antagonistic action and represented by the formula: 1Type: ApplicationFiled: July 31, 2002Publication date: November 20, 2003Inventors: Yoshiaki Kuroki, Hitoshi Ueno, Tetsushi Katsube, Tetsuo Kawaguchi, Eiji Okanari, Takashi Ikuta
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Publication number: 20030183520Abstract: A sensor element including an insulative base (11), a heating resistor (12), an oxygen pump cell (13), an oxygen detection cell (14), and a diffusion-chamber-forming member (161) having a rate-controlling introduction portion (163) and defining a diffusion chamber (16) in cooperation with electrodes (1321, 1421), wherein these components have been subjected to simultaneous firing (i.e., cofiring) to form a unitary sensor element. A partition wall (162), which extends from the diffusion-chamber-forming member and is made of alumina, is joined to a surface of a solid electrolyte (131) between two electrodes (1321, 1322) of an Ip cell. Preferably, a region within 20 &mgr;m from the plane of junction joining the partition wall (162) to the solid electrolyte (131) contains no portion whose amount of non-alumina substances exceeds by 2% by mass (by weight) or more the amount of non-alumina substances of the diffusion-chamber-forming member (161).Type: ApplicationFiled: October 15, 2002Publication date: October 2, 2003Applicant: NGK SPARK PLUG CO., LTD.Inventors: Tomohiro Mabuchi, Yoshiaki Kuroki, Shinya Awano, Hiroyuki Hayashi, Kunio Yanagi
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Patent number: 6610708Abstract: A cyclic amino compound represented by the following formula: or a pharmacologically acceptable salt thereof. R1 is a substitutable phenyl group. R2 is a substitutable aliphatic acyl group, a substitutable benzoyl group or an alkoxycarbonyl group. R3 is a substituted, saturated cyclic amino group which may optionally have a fused ring. These compounds and salts have excellent platelet aggregation inhibitory action. They are useful for the prevention and/or treatment of embolism, thrombosis or arteriosclerosis and other conditions resulting from platelet aggregation.Type: GrantFiled: August 24, 2000Date of Patent: August 26, 2003Assignees: Sankyo Company, Limited, Ube Industries, Ltd.Inventors: Fumitoshi Asai, Atsuhiro Sugidachi, Toshihiko Ikeda, Haruo Iwabuchi, Yoshiaki Kuroki, Teruhiko Inoue, Ryo Iwamura, Nobuhiko Shibakawa
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Publication number: 20030034247Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7)-of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: ApplicationFiled: September 23, 2002Publication date: February 20, 2003Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Publication number: 20030006139Abstract: A solid electrolyte layer or body capable of being co-fired with an insulating ceramic substrate or body to be used as a gas sensor laminate. The gas sensor laminate is preferably composed of an alumina substrate (1) and an oxygen-ion conductive solid electrolyte layer (6) bonded to the alumina substrate (1) by firing. The oxygen-ion conductive solid electrolyte layer or body is formed from partially or wholly stabilized zirconia, which layer contains alumina in an amount of 10% to 80% by weight, particularly 30% to 75% by weight. In this manner, another ceramic layer; particularly, a ceramic layer (7) of alumina can further be bonded to the oxygen-ion conductive solid electrolyte layer. The relative density of the ceramic layer can be 60% to 99.5%, preferably 80% to 99.5%.Type: ApplicationFiled: February 3, 2000Publication date: January 9, 2003Inventors: Yoshiro Noda, Ryohei Aoki, Yutaka Adachi, Yoshiaki Kuroki, Takao Kojima, Sinya Awano, Koichi Imaeda
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Publication number: 20020036138Abstract: A multi-layer gas sensor element is described which comprises a solid electrolytic member, a substrate, and a porous member, wherein each of the substrate and the porous member has a thickness larger than that of the solid electrolytic member with respect to a lamination direction; the substrate and the porous member face each other and sandwich the solid electrolytic member; a ceramic component constituting the substrate in the highest volume percent is the same as the ceramic component constituting the porous member in the highest volume percent thereof; and the volume percent (R2) of the ceramic component contained in the porous member is 80% or more the volume percent (R1) of the ceramic component contained in the substrate.Type: ApplicationFiled: July 31, 2001Publication date: March 28, 2002Applicant: NGK SPARK PLUG CO., LTD.Inventors: Yoshiaki Kuroki, Kunio Yanagi, Tomohiro Mabuchi, Shinya Awano, Hiroyuki Hayashi
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Patent number: 6265418Abstract: The present invention discloses the compound represented by the formula (I): wherein A represents the following formula (a-1) or the following formula (a-2): B represents the following formula (b): (wherein the symbols are each as defined in the specification) or a pharmaceutically acceptable salts thereof, and intermediates for the preparation thereof, which have excellent platelet aggregation inhibitory activity and other properties and useful as prophylactic or therapeutic agents for diseases associated with a fibrinogen receptor, thrombosis, infarction and the like.Type: GrantFiled: January 31, 2000Date of Patent: July 24, 2001Assignee: Ube Industries, Ltd.Inventors: Yoshiaki Kuroki, Hitoshi Ueno, Masayuki Tanaka, Katsunori Takata, Takahiro Motoyama, Kousuke Baba
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Patent number: 5895591Abstract: A ceramic heater for heating a sensor such as an oxygen sensor has a ceramic substrate and a heater pattern formed on the substrate. A heater pattern 22 is tightly interposed between first and second alumina substrates 15 and 21. This heater pattern 22 has a meandering heating section 25 and a pair of leads 26 for connecting both ends of the heating section 25 to two terminals at the base side end. The heating section 25 is divided into a tip side subsection 25a located near the tip side end of the device, and a base side subsection 25b. Specifically, the wire width is made greater in the tip side subsection 25a than in the base side subsection 25b so that the resistance per unit length is lower in the tip side subsection 25a. The thus-designed heater section 25 produces a less amount of heat in the tip side subsection than in the base side subsection, and this distribution of heat generation can reduce the possibility of cracks and breakage of a wire.Type: GrantFiled: April 14, 1997Date of Patent: April 20, 1999Assignee: NGK Spark Plug Co., Ltd.Inventors: Takao Kojima, Yoshiaki Kuroki, Kunio Yanagi
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Patent number: 5610303Abstract: A pyrimidine derivative represented by the formula (II) or (III): ##STR1## (wherein R.sup.1 and R.sup.2 each represent H, a halogen, amino, nitro, an unsubstituted or substituted alkyl, an alkoxy or an alkoxycarbonyl, or R.sup.1 and R.sup.2 are bonded together to form an unsubstituted or substituted alkylene; R.sup.3 represents an aralkyl or a hetero aromatic ring type-alkyl, R.sup.4 represents H or acyl, R.sup.5 represents H, OH or an alkoxy, R.sup.6 represents H, a halogen, an alkyl or an alkoxy, X represents --CH=, --CH=CH--(CH.sub.2).sub.p --, --CH.sub.2 -- or --CH.sub.2 CH.sub.2 --(CH.sub.2).sub.p --, Y represents =CH-- (CH.sub.2).sub.p --, --CH.sub.2 --(CH.sub.2).sub.p --, a single bond or a double bond, p represents 0 or 1, and . . . represents a single bond or a double bond),and a salt thereof have selective acetylcholinesterase-inhibiting activities and selective A type monoamine oxidase-inhibiting activities, and are useful as an antidepressant and an agent for curing senile dementia.Type: GrantFiled: April 3, 1995Date of Patent: March 11, 1997Assignee: Ube Industries, Ltd.Inventors: Tomio Kimura, Yoshiaki Kuroki, Hiroshi Fujiwara, Shigeharu Anpeiji