Patents by Inventor Hirofumi Nishida
Hirofumi Nishida 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: 11603442Abstract: An object of the present invention is to provide a fiber-reinforced thermoplastic resin sheet which can be manufactured into a molded body exhibiting excellent appearance quality as well as exhibits both high moldability and strength and a manufacturing method of such a fiber-reinforced thermoplastic resin sheet. The present invention relates to a fiber-reinforced thermoplastic resin sheet which is a random laminated body of a tape-shaped unidirectional prepreg and contains spread reinforcement fibers and a polymer (a) and in which the polymer (a) is a polymer of at least a bisphenol A type epoxy compound represented by Formula (1): where n is an integer of 1 to 4 and a bisphenol compound selected from the group consisting of bisphenol A, bisphenol F, bisphenol S, bisphenol B, bisphenol E, and bisphenol P.Type: GrantFiled: June 28, 2019Date of Patent: March 14, 2023Assignees: SUNCORONA ODA CO., LTD., KANAZAWA INSTITUTE OF TECHNOLOGYInventors: Keisuke Sone, Masaki Kobayashi, Hirofumi Nishida, Kiyoshi Uzawa, Hisai Ueda
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Publication number: 20210171728Abstract: An object of the present invention is to provide a fiber-reinforced thermoplastic resin sheet which can be manufactured into a molded body exhibiting excellent appearance quality as well as exhibits both high moldability and strength and a manufacturing method of such a fiber-reinforced thermoplastic resin sheet. The present invention relates to a fiber-reinforced thermoplastic resin sheet which is a random laminated body of a tape-shaped unidirectional prepreg and contains spread reinforcement fibers and a polymer (a) and in which the polymer (a) is a polymer of at least a bisphenol A type epoxy compound represented by Formula (1): [where n is an integer of 1 to 4] and a bisphenol compound selected from the group consisting of bisphenol A, bisphenol F, bisphenol S, bisphenol B, bisphenol E, and bisphenol P, and Mwa is 25,000 or more and a proportion (Mwb/Mwa) of Mwb to Mwa is 1.01 to 1.Type: ApplicationFiled: June 28, 2019Publication date: June 10, 2021Inventors: Keisuke SONE, Masaki KOBAYASHI, Hirofumi NISHIDA, Kiyoshi UZAWA, Hisai UEDA
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Patent number: 9006381Abstract: Provided are: an impact-resistant polyamide composition which exhibits improved toughness and improved impact strength and which can be easily polymerized in-situ in a molding stage; and a novel process for the production of the same. The novel process comprises initiating the anionic polymerization of ?-caprolactam in the presence of (A) an anionic polymerization catalyst, (B) an anionic polymerization activator, (C) 2.0 to 30% by weight (relative to the ?-caprolactam) of an N,N-disubstituted vinylbenzylamine, and (D) a radical polymerization initiator, and subjecting the resulting system to reaction under conditions comprising a reaction temperature of the reaction system of 120 to 180° C. and a reaction time of 10 seconds to 120 minutes. Since radical polymerization in the process is conducted without hindering the anionic polymerization, an alloyed polyamide composed of both polycaprolactam and poly (N,N-disubstituted vinylbenzylamine) can be obtained.Type: GrantFiled: June 23, 2011Date of Patent: April 14, 2015Assignee: Nagase Chemtex CorporationInventors: Tokizane Imanishi, Hirofumi Nishida
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Patent number: 8809470Abstract: A polymerizable epoxy compound composition containing an anionic polymerization initiator which can be easily produced, can attain a high polymerization rate and a high degree of polymerization, and can realize an epoxy polymer having properties unobtainable so far, an improvement in cured polymer properties, etc.; and a method of polymerizing an epoxy compound. The composition is an anionically polymerizable composition comprising a monofunctional epoxy compound or a di- or more functional epoxy resin and a polymerization initiator, the polymerization initiator comprising the potassium or sodium salt of a monocarboxylic acid monomer. The method, which is for producing a polymer of epoxy compounds, comprises polymerizing a monofunctional epoxy compound or a di- or more functional epoxy resin by anionic polymerization with the aid of the potassium or sodium salt of a monocarboxylic acid monomer.Type: GrantFiled: August 24, 2005Date of Patent: August 19, 2014Assignee: Nagase Chemtex CorporationInventor: Hirofumi Nishida
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Patent number: 8530053Abstract: A high heat-resistant composite material which comprises a polymerizable composition comprising a bi-functional epoxy compound, a tri- or more-functional epoxy compound and a polymerization initiator, wherein the polymerization initiator comprises a sodium salt or potassium salt of mono- or poly-functional carboxylic acid, and a reinforcing fiber such as a carbon fiber or a glass fiber; and a vehicle member or a construction member comprising the above heat-resistant composite material. Said composite material comprises an epoxy polymer having high heat-resistant physical properties over those of a conventional epoxy polymer as a matrix, and exhibits an extremely high retention factor of storage modulus at high temperature.Type: GrantFiled: October 25, 2005Date of Patent: September 10, 2013Assignees: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama
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Publication number: 20130190471Abstract: Provided are: an impact-resistant polyamide composition which exhibits improved toughness and improved impact strength and which can be easily polymerized in-situ in a molding stage; and a novel process for the production of the same. The novel process comprises initiating the anionic polymerization of ?-caprolactam in the presence of (A) an anionic polymerization catalyst, (B) an anionic polymerization activator, (C) 2.0 to 30% by weight (relative to the ?-caprolactam) of an N,N-disubstituted vinylbenzylamine, and (D) a radical polymerization initiator, and subjecting the resulting system to reaction under conditions comprising a reaction temperature of the reaction system of 120 to 180° C. and a reaction time of 10 seconds to 120 minutes. Since radical polymerization in the process is conducted without hindering the anionic polymerization, an alloyed polyamide composed of both polycaprolactam and poly (N,N-disubstituted vinylbenzylamine) can be obtained.Type: ApplicationFiled: June 23, 2011Publication date: July 25, 2013Applicant: NAGASE CHEMTEX CORPORATIONInventors: Tokizane Imanishi, Hirofumi Nishida
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Publication number: 20090215929Abstract: Disclosed herein are a method for producing a fiber-reinforced thermally meltable epoxy resin having excellent heat resistance using a thermally meltable epoxy resin having a high melting initiation temperature and a fiber-reinforced plastic molded by the method. The method for producing a fiber-reinforced thermally meltable epoxy resin comprises the steps of: (I) impregnating reinforcing fibers with a compound (A) having two epoxy groups in one molecule and a compound (B) having two phenolic hydroxyl groups in one molecule; and (II) linearly polymerizing the compounds (A) and (B) impregnated into the reinforcing fibers by polyaddition reaction, wherein at least a part of the compound (A) and/or at least a part of the compound (B) are/is a compound having a fluorene skeleton, and the compound (A) and the compound (B) are mixed in such a ratio that the number of moles of epoxy groups in the compound (A) is 0.9 to 1.1 times the number of moles of phenolic hydroxyl groups in the compound (B).Type: ApplicationFiled: May 12, 2006Publication date: August 27, 2009Applicants: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama
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Publication number: 20080139698Abstract: A high heat-resistant composite material which comprises a polymerizable composition comprising a bi-functional epoxy compound, a tri- or more-functional epoxy compound and a polymerization initiator, wherein the polymerization initiator comprises a sodium salt or potassium salt of mono- or poly-functional carboxylic acid, and a reinforcing fiber such as a carbon fiber or a glass fiber; and a vehicle member or a construction member comprising the above heat-resistant composite material. Said composite material comprises an epoxy polymer having high heat-resistant physical properties over those of a conventional epoxy polymer as a matrix, and exhibits an extremely high retention factor of storage modulus at high temperature.Type: ApplicationFiled: October 25, 2005Publication date: June 12, 2008Applicants: Nagase Chemtex Corporation, Nitto Boseki Co., Ltd.Inventors: Hirofumi Nishida, Norio Hirayama
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Publication number: 20080139758Abstract: A polymerizable epoxy compound composition containing an anionic polymerization initiator which can be easily produced, can attain a high polymerization rate and a high degree of polymerization, and can realize an epoxy polymer having properties unobtainable so far, an improvement in cured polymer properties, etc.; and a method of polymerizing an epoxy compound. The composition is an anionically polymerizable composition comprising a monofunctional epoxy compound or a di- or more functional epoxy resin and a polymerization initiator, the polymerization initiator comprising the potassium or sodium salt of a monocarboxylic acid monomer. The method, which is for producing a polymer of epoxy compounds, comprises polymerizing a monofunctional epoxy compound or a di- or more functional epoxy resin by anionic polymerization with the aid of the potassium or sodium salt of a monocarboxylic acid monomer.Type: ApplicationFiled: August 24, 2005Publication date: June 12, 2008Applicant: Nagase Chemtex CorporationInventor: Hirofumi Nishida
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Publication number: 20070010611Abstract: A method of manufacturing a fiber-reinforced thermoplastics, comprising a mixing step for mixing an uncured thermosetting resin with reinforcing fibers to obtain a mixture, and a reaction step for forming the thermoplastics by causing a polymerization reaction of the thermosetting resin in the mixture so that the thermosetting resin polymerizes.Type: ApplicationFiled: December 26, 2003Publication date: January 11, 2007Inventors: Norio Hirayama, Hirofumi Nishida
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Patent number: 5844053Abstract: The disclosed organo-polysiloxane derivative is useful as a dispersing agent for homogeneously dispersing a silicone gel in a curable resin such as an epoxy resin. The organo-polysiloxane derivative is prepared by first reacting an organo-polysiloxane compound A having an active hydrogen-containing group in each of its both terminals and having from 5 to 70 siloxane bonds with a bifunctional organic compound B having two functional groups reactable with active hydrogen. The reaction mixture obtained in the first reaction is reacted with a mixture of a bifunctional organic compound C having two active hydrogens and a bifunctional organic compound D having two functional groups reactable with the active hydrogen.Type: GrantFiled: October 29, 1996Date of Patent: December 1, 1998Assignee: Nagase-Ciba, Ltd.Inventor: Hirofumi Nishida
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Patent number: 5634600Abstract: The refuse processing machine of the invention reduces the bulk of the waste by heating and drying the waste in the waste container by heating means. The grinding and stirring means is operated while heating and drying, and the waste is ground and stirred. The waste is ground into small pieces by the grinding and stirring means, and heat of the heating means is hence smoothly transmitted to the inside of the waste, so that the moisture in the waste may be removed efficiently.Type: GrantFiled: April 8, 1994Date of Patent: June 3, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tadashi Kubota, Motomichi Mishima, Yukio Hayashida, Hisao Tsunaga, Hideaki Sakatani, Hirofumi Nishida, Katsuyuki Ishibashi, Tatsuo Kikawa, Syuji Asada, Tatsuo Fujita, Yukiyoshi Nishikori, Hidenori Kitamura, Syuzo Tokumitu, Kenichiro Sunaba
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Patent number: 5551170Abstract: Refuse 21 in a refuse container 2 is heated by a heater 16, and the steam generated from the refuse 21 is condensed by a condenser 8. The ambient temperature near the refuse container 2 is detected by a first temperature detector 6, and the output of the heater 16 is controlled by the output of the first temperature detector 6 so that the temperature near the refuse container 2 may be a specific temperature, and the temperature of the steam flowing out from the refuse container 2 into the condenser 8 is detected by a second temperature detector 7 at the condenser 8. When the temperature change of the second temperature detector 7 exceeds a specific value, the drying process is terminated, so that the drying end time can be detected accurately without allowing to scorch.Type: GrantFiled: April 11, 1994Date of Patent: September 3, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideaki Sakatani, Hirofumi Nishida, Yoji Uetani, Yoichi Kuroki, Keiko Hata, Tatsuo Fujita, Tatsuo Kikawa, Seichi Ueno, Yukio Hayashida
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Patent number: 5482685Abstract: A catalyst 1 is provided in a gas passage 4 for communicating between a gas flow-in unit 12 and a gas flow-out unit 13, and the catalyst 1 is heated by a heater 2, and a temperature sensor 3 for detecting the temperature of the heater 2 is provided inside the heater 2. By feeding power to the heater 2, the wall temperature of the heater 2 is raised to heat the catalyst 1, and then malodorous gas containing odor substances is passed in from the gas flow-in unit 12. The malodorous gas passes through the catalyst 1 in the gas passage 4 to be oxidized to be harmless and odorless, and is discharged from the gas flow-out unit 13.Type: GrantFiled: April 11, 1994Date of Patent: January 9, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Tatsuo Fujita, Syuzo Tokumitsu, Hirofumi Nishida, Tadashi Suzuki, Yukiyoshi Ono, Tetsuo Terashima, Takeshi Tomizawa, Jiro Suzuki, Syuji Asada, Yukiyoshi Nishikori
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Patent number: 5278113Abstract: A catalytic body contains a base material and, formed on the surface thereof, a catalytic coating layer containing activated alumina, zeolite, a platinum group metal and an inorganic binder.By alternately repeating the step of adsorption of odor components with zeolite and alumina under non-heating condition and the step of heat-regeneration of the zeolite and alumina and catalytic decomposition of odor components under heating condition, offensive odors can be continuously removed over a long period and without excessively raising the temperature in the surroundings of the catalytic body.Type: GrantFiled: March 3, 1992Date of Patent: January 11, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yukiyoshi Ono, Kunio Kimura, Hidenobu Wakita, Yasue Yamade, Hirofumi Nishida