Patents by Inventor Kensaku Komatsu
Kensaku Komatsu 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: 20240058764Abstract: A gas separation membrane module includes at least one hollow fiber membrane element and a casing. The hollow fiber membrane element includes hollow fiber membranes and a cylindrical body. The cylindrical body extends in a longitudinal direction of the hollow fiber membranes, and accommodates the hollow fiber membranes. The hollow fiber membrane element includes sweep gas introduction ports and mixed gas discharge ports. A first supply chamber, a first discharge chamber, a second supply chamber, and a second discharge chamber are positioned between the casing and the hollow fiber membrane element. The first supply chamber, the first discharge chamber, the second supply chamber, and the second discharge chamber are partitioned off from each other.Type: ApplicationFiled: September 29, 2020Publication date: February 22, 2024Applicants: KAWASAKI JUKOGYO KABUSHIKI KAISHA, KURARAY, CO., LTD.Inventors: Katsuya UMEMOTO, Takafumi ITO, Koji FUKUMOTO, Tomoaki UMEMURA, Koji MIYAKE, Kazuhiko EDA, Youhei YABUNO, Kensaku KOMATSU
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Patent number: 11388138Abstract: A communication system including a first address notification apparatus provided in a first communication network, and a second address notification apparatus provided in a second communication network, wherein the first address notification apparatus includes means that receives an address request from a terminal that can communicate with the first address notification apparatus and with the second address notification apparatus, obtains a source address from the address request, and transmits a response including the source address to the terminal, and the second address notification apparatus includes means that receives an address request from the terminal, obtains a source address from the address request, and transmits a response including the source address to the terminal.Type: GrantFiled: October 13, 2016Date of Patent: July 12, 2022Assignee: NTT Communications CorporationInventors: Yuuki Nakahara, Kensaku Komatsu
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Publication number: 20220088542Abstract: A composite hollow fiber membrane according to one aspect of the present invention is provided with a semipermeable membrane layer, a support layer that has a hollow fiber shape and is porous, and an intermediate layer interposed between the semipermeable membrane layer and the support layer. The semipermeable membrane layer contains a crosslinked polyamide formed of a polyfunctional amine compound and a polyfunctional acid halide compound. The intermediate layer includes a layer portion made of the same material as the support layer, and the crosslinked polyamide impregnating the layer portion.Type: ApplicationFiled: February 17, 2020Publication date: March 24, 2022Applicant: Kuraray Co., Ltd.Inventors: Kota MIHARA, Youhei YABUNO, Yoshito MIZUMOTO, Kensaku KOMATSU
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Patent number: 11146643Abstract: A message bus agent apparatus that is used as a first message bus agent apparatus in a system including a message bus management server, a signaling server, the first message bus agent apparatus, and a second message bus agent apparatus, the message bus agent apparatus including: signaling means that transmits, to the signaling server, a signaling message in which an agent ID of the second message bus agent apparatus issued from the message bus management server is designated as a connection destination; and connection means that establishes a connection with the second message bus agent apparatus as a virtual message bus based on processing of a signaling message by the signaling server.Type: GrantFiled: February 26, 2018Date of Patent: October 12, 2021Assignee: NTT Communications CorporationInventor: Kensaku Komatsu
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Publication number: 20210101119Abstract: One aspect of the present invention is a composite hollow fiber membrane including: a semipermeable membrane layer; and a supporting layer that has a hollow fiber shape and is porous, wherein the semipermeable membrane layer contains a crosslinked polyamide polymer composed of a polyfunctional amine compound and a polyfunctional acid halide compound, the supporting layer has a gradient structure in which pores of the supporting layer gradually increase in size from one of an inner surface and an outer surface to the other, has a cut-off particle size of 0.001 to 0.3 ?m, and contains a crosslinked hydrophilic resin on at least a dense surface having smaller pores of the inner surface and the outer surface, and the semipermeable membrane layer is in contact with the dense surface of the supporting layer.Type: ApplicationFiled: December 18, 2018Publication date: April 8, 2021Applicant: Kuraray Co., Ltd.Inventors: Youhei YABUNO, Kensaku KOMATSU, Shigetaka SHIMAMURA, Kenichi HAMADA
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Publication number: 20200021660Abstract: A message bus agent apparatus that is used as a first message bus agent apparatus in a system including a message bus management server, a signaling server, the first message bus agent apparatus, and a second message bus agent apparatus, the message bus agent apparatus including: signaling means that transmits, to the signaling server, a signaling message in which an agent ID of the second message bus agent apparatus issued from the message bus management server is designated as a connection destination; and connection means that establishes a connection with the second message bus agent apparatus as a virtual message bus based on processing of a signaling message by the signaling server.Type: ApplicationFiled: February 26, 2018Publication date: January 16, 2020Applicant: NTT Communications CorporationInventor: Kensaku KOMATSU
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Patent number: 10406487Abstract: Provided is a vinylidene fluoride porous hollow fiber membrane excellent in fouling resistance due to reduced organic substance absorbance, preferably having preferable pore structures to enable to have high permeability, high fractionation performance, and good process controllability. The membrane includes a vinylidene fluoride resin and 0.5 to 10% by weight of a hydrophilic resin, having a ratio Pi/Po of 2.5 to 50 where Pi and Po denote an average pore size on inner surface and an average pore size on outer surface, respectively, and having a pure water permeation rate satisfying the following formula: (FLUXd/FLUXw)×100?40.0 wherein FLUXd represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a dry state, and FLUXw represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a wet state.Type: GrantFiled: January 8, 2016Date of Patent: September 10, 2019Assignee: KURARAY CO., LTD.Inventors: Arata Ishiodori, Kensaku Komatsu, Youhei Yabuno
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Publication number: 20180302370Abstract: A communication system including a first address notification apparatus provided in a first communication network, and a second address notification apparatus provided in a second communication network, wherein the first address notification apparatus includes means that receives an address request from a terminal that can communicate with the first address notification apparatus and with the second address notification apparatus, obtains a source address from the address request, and transmits a response including the source address to the terminal, and the second address notification apparatus includes means that receives an address request from the terminal, obtains a source address from the address request, and transmits a response including the source address to the terminal.Type: ApplicationFiled: October 13, 2016Publication date: October 18, 2018Applicant: NTT Communications CorporationInventors: Yuuki NAKAHARA, Kensaku KOMATSU
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Publication number: 20160121273Abstract: Provided is a vinylidene fluoride porous hollow fiber membrane excellent in fouling resistance due to reduced organic substance absorbance, preferably having preferable pore structures to enable to have high permeability, high fractionation performance, and good process controllability. The membrane includes a vinylidene fluoride resin and 0.5 to 10% by weight of a hydrophilic resin, having a ratio Pi/Po of 2.5 to 50 where Pi and Po denote an average pore size on inner surface and an average pore size on outer surface, respectively, and having a pure water permeation rate satisfying the following formula: (FLUXd/FLUXw)×100?40.0 wherein FLUXd represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a dry state, and FLUXw represents a pure water permeation rate (L/m2/hr/98 kPa) of the hollow fiber membrane in a wet state.Type: ApplicationFiled: January 8, 2016Publication date: May 5, 2016Applicant: Kuraray Co., Ltd.Inventors: Arata Ishiodori, Kensaku Komatsu, Youhei Yabuno
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Patent number: 7909178Abstract: A porous membrane, made of polyvinylidene fluoride which is excellent in fractionating capability, permeating capability and physical strength and suitable for use in water treatment such as water purification, preparation of drinking water, preparation of water for industrial use and wastewater treatment, and which can be manufactured inexpensively and easily. The porous membrane has one surface formed with round or oval micropores and the opposite surface formed with substantially slit shaped micropores. The round or oval micropores have an average ratio between the major axis and the minor axis, which is within the range of 1:1 to 5:1, and the substantially slit shaped micropores have an average ratio between the major axis and the minor axis, which is not smaller than 5:1 and the particle cutoff of the membrane is not smaller than 0.2 ?m.Type: GrantFiled: February 9, 2009Date of Patent: March 22, 2011Assignee: Kuraray Co., Ltd.Inventors: Arata Ishiodori, Kensaku Komatsu, Koji Yamada
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Publication number: 20090148659Abstract: A porous membrane, made of polyvinylidene fluoride which is excellent in fractionating capability, permeating capability and physical strength and suitable for use in water treatment such as water purification, preparation of drinking water, preparation of water for industrial use and wastewater treatment, and which can be manufactured inexpensively and easily. The porous membrane has one surface formed with round or oval micropores and the opposite surface formed with substantially slit shaped micropores. The round or oval micropores have an average ratio between the major axis and the minor axis, which is within the range of 1:1 to 5:1, and the substantially slit shaped micropores have an average ratio between the major axis and the minor axis, which is not smaller than 5:1 and the particle cutoff of the membrane is not smaller than 0.2 ?m.Type: ApplicationFiled: February 9, 2009Publication date: June 11, 2009Applicant: Kuraray Co., Ltd.,Inventors: Arata ISHIODORI, Kensaku KOMATSU, Koji YAMADA
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Patent number: 6890436Abstract: A porous hollow fiber membrane having a particle cutoff within the range of 1 to 10 ?m and a pure water permeate flow equal to or higher than 30,000 L/m2/hr/100 kPa.Type: GrantFiled: June 20, 2001Date of Patent: May 10, 2005Assignee: Kuraray Co., Ltd.Inventors: Kensaku Komatsu, Ichirou Kawata, Shigenobu Ishii, Yoshio Sato, Seiichi Nakahara
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Publication number: 20020011443Abstract: A porous hollow fiber membrane having a particle cutoff within the range of 1 to 10 &mgr;m and a pure water permeate flow equal to or higher than 30,000 L/m2/hr/100 kPa.Type: ApplicationFiled: June 20, 2001Publication date: January 31, 2002Applicant: KURARAY CO., LTD.Inventors: Kensaku Komatsu, Ichirou Kawata, Shigenobu Ishii, Yoshio Sato, Seiichi Nakahara
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Patent number: 5976433Abstract: A polyvinyl alcohol-based hollow fiber membrane having a ratio between the size of particles of 90% rejection and that of particles of 10% rejection of not more than 5, thus proving to have a sharp fractionating property, is produced by a process which comprises, on producing a polyvinyl alcohol-based hollow fiber membrane by dry-jet wet spinning or wet spinning, using a spinneret having heat insulating structure.Type: GrantFiled: December 23, 1997Date of Patent: November 2, 1999Assignee: Kuraray Co., Ltd.Inventors: Kensaku Komatsu, Osamu Kusudo
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Patent number: 5789081Abstract: A polyvinyl alcohol-based hollow fiber membrane having a ratio between the size of particles of 90% rejection and that of particles of 10% rejection of not more than 5, thus proving to have a sharp fractionating property, is produced by a process which comprises, on producing a polyvinyl alcohol-based hollow fiber membrane by dry-jet wet spinning or wet spinning, using a spinneret having heat insulating structure.Type: GrantFiled: May 31, 1996Date of Patent: August 4, 1998Assignee: Kuraray Co., Ltd.Inventors: Kensaku Komatsu, Osamu Kusudo
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Patent number: 5340480Abstract: The polysulfone hollow fiber membrane of the invention has an inner dense skin layer composed of a polysulfone and a less amount of a polyvinylpyrrolidone, a content of the polyvinylpyrrolidone in the dense skin layer being higher than that in an outer surface layer. This membrane has excellent biocompatibility and antithrombogenetic ability and is, therefore, useful in body fluid treatment, such as hemodialysis, hemofiltration and hemoconcentration, without clogging with thrombi.Type: GrantFiled: April 26, 1993Date of Patent: August 23, 1994Assignee: Kuraray Co., Ltd.Inventors: Ichiro Kawata, Takehiko Okamoto, Hiroyuki Akasu, Kensaku Komatsu