Patents by Inventor Kazunori Takahata
Kazunori Takahata 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: 20240127846Abstract: An articulation abnormality detection method includes: calculating an acoustic feature from utterance data of a speaker; calculating, from the acoustic feature, a first speaker feature indicating a speaker characteristic of the utterance data by using a trained deep neural network (DNN); calculating a degree of similarity between a second speaker feature of the speaker and the first speaker feature, where the second speaker feature is a speaker feature obtained when the speaker articulated properly; and determining whether the speaker has an articulation abnormality, based on the degree of similarity.Type: ApplicationFiled: December 11, 2023Publication date: April 18, 2024Inventors: Katsunori Daimo, Shogo TAKAHATA, Kazunori KAWAMI, Seiki NAGAO, Ryota OHMAE
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Patent number: 5565129Abstract: The polycarbonates of the present invention include those of sucrose series having a specific cyclic structure, those of oligosaccharide and monosaccharide series other than the sucrose series, those derived from specific saccharides having no cyclic structure, those having a skeletal structure of pentaerythritol, neopentyl glycol or trimethylolmethane, and specific dicarbonates.The lubricating oil and electrical insulating oil of the invention contain the above-mentioned polycarbonates.The polycarbonates of the invention are excellent in compatibility with Freon R-134a (HFC) as well as in lubricating properties, detergency and electrical insulating properties, and are capable of providing lubricating oil for refrigerator, automotive engine oil, automotive gear oil, lubricating oil for rolling and lubricating oil for fiber, especially lubricating oil for which electrical insulating properties are required, and electrical insulating oil.Type: GrantFiled: June 1, 1995Date of Patent: October 15, 1996Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masahide Tanaka, Tadaaki Fujimoto, Tetsuo Hayashi, Takashi Hayashi, Kazunori Takahata
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Patent number: 5476602Abstract: The polycarbonates of the present invention include those of sucrose series having a specific cyclic structure, those of oligosaccharide and monosaccharide series other than the sucrose series, those derived from specific saccharides having no cyclic structure, those having a skeletal structure of pentaerythritol, neopentyl glycol or trimethylolmethane, and specific dicarbonates.The lubricating oil and electrical insulating oil of the invention contain the above-mentioned polycarbonates.The polycarbonates of tile invention are excellent in compatibility with Freon R-134a (HFC) as well as in lubricating properties, detergency and electrical insulating properties, and are capable of providing lubricating oil for refrigerator, automotive engine oil, automotive gear oil, lubricating oil for rolling and lubricating oil for fiber, especially lubricating oil for which electrical insulating properties are required, and electrical insulating oil.Type: GrantFiled: December 21, 1993Date of Patent: December 19, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masahide Tanaka, Tadaaki Fujimoto, Tetsuo Hayashi, Takashi Hayashi, Kazunori Takahata
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Patent number: 5384056Abstract: The polycarbonate of the invention is a polycarbonate derived from adducts such as propylene oxide adducts of polyglycerols. The lubricating oil of the invention comprises this polycarbonate, and if necessary, a specific polycarbonate having a --C.sub.2 H.sub.4 O-- group and/or a --CH.sub.2 CH(CH.sub.3)O-- group in its main chain. The lubricating oil of the invention can be used as a lubricating oil for refrigerators such as automotive air-conditioner and electric refrigerator. In particular, the lubricating oil of the invention is suitable as a lubricating oil for refrigerator wherein high-viscosity lubricating oil is used, for example, lubricating oil for automotive rotary air-conditioner, and also suitable as lubricating oil for a refrigerator wherein ozone layer-nondestructive hydrogenated fluorocarbon such as R-134a is used as a refrigerant.Type: GrantFiled: January 12, 1993Date of Patent: January 24, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masahide Tanaka, Tadaaki Fujimoto, Kazunori Takahata
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Patent number: 5326486Abstract: A polycarbonate lubricating oil composition which is resistant to decomposition of the polycarbonate and the generation of carbon dioxide gas. The lubricating oil composition contains a polycarbonate lubricant, at least one compound selected from the group of epoxy compound, phenol compound, sulfur compound and amine compound, and optionally a triester phosphite or a triester phosphate compound as inhibitors to the generation of carbon dioxide gas. The lubricating oil composition are stable, have excellent lubricating properties, cleaning properties, and electrical insulating properties, and their viscosity at low temperature can readily be lowered.Type: GrantFiled: September 25, 1992Date of Patent: July 5, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kinya Mizui, Kazuyuki Watanabe, Hidenori Kaya, Takashi Hayashi, Kenji Shimamoto, Masahide Tanaka, Kazunori Takahata
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Patent number: 5294356Abstract: The polycarbonates of the present invention include those of sucrose series having a specific cyclic structure, those of oligosaccharide and monosaccharide series other than the sucrose series, those derived from specific saccharides having no cyclic structure, those having a skeletal structure of pentaerythritol, neopentyl glycol or trimethylolmethane, and specific dicarbonates.The lubricating oil and electrical insulating oil of the invention contain the above-mentioned polycarbonates.The polycarbonates of the invention are excellent in compatibility with Freon R-134a (HFC) as well as in lubricating properties, detergency and electrical insulating properties, and are capable of providing lubricating oil for refrigerator, automotive engine oil, automotive gear oil, lubricating oil for rolling and lubricating oil for fiber, especially lubricating oil for which electrical insulating properties are required, and electrical insulating oil.Type: GrantFiled: May 14, 1992Date of Patent: March 15, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Masahide Tanaka, Yoshihisa Kiso, Kazunori Takahata, Tetsuo Hayashi, Kenji Shimamoto, Kinya Mizui, Tadaaki Fujimoto, Kosei Nakamura
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Patent number: 5254766Abstract: A process for producing an alkyl-substituted aromatic hydrocarbon, which comprises alkylating an aromatic hydrocarbon with an alkylating agent in the presence of a heteropoly-acid or a salt thereof such as phosphorus tungstate and silicon tungstate as a catalyst. The process is particularly useful for preparing alkyl-substituted naphthalene or naphthalene derivatives.Type: GrantFiled: October 9, 1991Date of Patent: October 19, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Terunori Fujita, Kazunori Takahata, Hiroyasu Ohno, Masayasu Ishibashi, Hideo Oikawa
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Patent number: 5191131Abstract: A paraffin having 5 to 10 carbon atoms is catalytically cracked in the presence of a catalytically cracking catalyst having a strong acidity, especially a rare earth metal ion-exchanged mordenite or a dealuminized mordenite, to form a paraffin having 3 or 4 carbon atoms. The formed paraffin is contacted with a dehydrogenation catalyst to obtain an olefin having 3 or 4 carbon atoms.Type: GrantFiled: December 4, 1989Date of Patent: March 2, 1993Assignee: Research Association for Utilization of Light OilInventors: Kazunori Takahata, Toshihiro Murashige, Yukimasa Shigemura, Hiroshi Takaki, Akihiko Okano
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Patent number: 4891465Abstract: In a process for producing an alkyl group-substituted aromatic hydrocarbon according to the present invention, (i) an aromatic hydrocarbon is reacted with (ii) an alkylating agent selected from the group consisting of olefins, lower aliphatic alcohols and alkyl halides in the presence of a mordenite-type zeolite catalyst treated with a fluorine-containing compound, and therefore the conversion of the aromatic compound can be increased and further it is possible to introduce the specific number of alkyl groups into the specific position of the aromatic compound.In particular, when biphenyl is used as the aromatic hydrocarbon and propylene is used as the alkylating agent, p,p'-diisopropylbiphenyl can be obtained in a high yield and high selectivity.Type: GrantFiled: July 6, 1988Date of Patent: January 2, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Katsuo Taniguchi, Michio Tanaka, Kazunori Takahata, Naoya Sakamoto, Toshihiro Takai, Yoshito Kurano, Masayasu Ishibashi
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Patent number: 4351958Abstract: An orthoalkylated aromatic amine is produced at a high selectivity from the reaction of an aromatic amine having at least one hydrogen atom at the ortho-positions and a primary or secondary alcohol under heating in the presence of a catalyst containing, as a main constituent, iron oxides.Type: GrantFiled: August 28, 1981Date of Patent: September 28, 1982Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kazunori Takahata, Katsuo Taniguchi
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Patent number: 4349419Abstract: In a process for separating at least two alkyl phenols having close boiling points by azeotropic distillation of a mixture composed of the alkyl phenols with a hydrocarbon azeotroping agent, the improvement wherein said hydrocarbon azeotroping agent is selected from saturated aliphatic hydrocarbons of 9 to 13 carbon atoms having a boiling point of 150.degree. to 190.degree. C. at 760 mmHg.Type: GrantFiled: February 3, 1981Date of Patent: September 14, 1982Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Kazunori Takahata, Katsuo Taniguchi, Tadaaki Fujimoto
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Patent number: 4329517Abstract: In a process for producing a mono- or di-ortho-methyl-substituted phenol which comprises methylating a phenol having one or two ortho-hydrogens with methanol in the presence of a catalytic amount of a catalyst comprising a major proportion of an oxide of iron as a first component (A) and a minor proportion of at least one oxide of metal other than iron as a second component (B), the improvement wherein said metal other than iron in component (B) is a metal selected from the group consisting of Ga, Ge, Y, Nb, Hf, Bi and Ta; and a catalyst used therefor.Type: GrantFiled: May 14, 1980Date of Patent: May 11, 1982Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Katsuo Taniguchi, Kazunori Takahata, Yoshiaki An-Nen
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Patent number: 4198535Abstract: A process for producing a linear unsaturated dimer of .alpha.-alkyl styrenes by heating .alpha.-alkyl styrenes in the presence of a silica-alumina catalyst, said catalyst consisting of alumina and silica in a weight ratio of 83/17.ltoreq.Al.sub.2 O.sub.3 /SiO.sub.2 .ltoreq.96/4 and being substantially free of alkali is disclosed.Type: GrantFiled: September 27, 1978Date of Patent: April 15, 1980Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Kazunori Takahata, Hiroshi Hasui