Patents by Inventor Takashi Uematsu
Takashi Uematsu 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: 20230045598Abstract: A phased-array antenna device with a long operating life without mechanical parts, has a high spatial resolution, and realizes microwave observation of broadband and highfrequency resolution. The phased-array antenna device performs direct A/D conversion through a BPF on an antenna analog signal amplified by an amplifier. Then, the device performs a second cross-spectrum calculation after conversion into complex frequency data through FFT. To detect a weak electromagnetic wave, the device repeatedly performs a second FFT over a long period and lastly performs integration.Type: ApplicationFiled: June 4, 2020Publication date: February 9, 2023Applicant: JAPAN AEROSPACE EXPLORATION AGENCYInventors: Takashi MAEDA, Naoya TOMII, Akihisa UEMATSU, Kazuya INAOKA, Noriyuki KAWAGUCHI
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Publication number: 20220342153Abstract: A manufacturing method of an optical splitter of the present disclosure includes: performing first processing that involves mounting a coated optical fiber on a jig configured to store the coated optical fiber, and polishing the coated optical fiber together with the jig until reaching a vicinity of a core of the coated optical fiber or the core of the coated optical fiber; performing second processing that involves applying a refractive index matching material having a refractive index lower than a refractive index of the core of the coated optical fiber onto a polished face of the coated optical fiber on the jig polished in the first processing or onto a polished face of an optical waveguide circuit having been polished in advance until reaching a vicinity of a core or reaching the core, and then bonding the polished faces to each other; and performing third processing that involves positionally aligning the polished faces bonded with each other in the second processing to move the jig or the optical waveguType: ApplicationFiled: October 2, 2019Publication date: October 27, 2022Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takui UEMATSU, Hidenobu HIROTA, Hiroyuki IIDA, Takashi EBINE
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Publication number: 20220326026Abstract: The present invention assists at work related to the setting of an evaluation index for a vehicle operation plan. A vehicle operation assistance device manages one or more pieces of evaluation information including information regarding evaluation of the vehicle operation plan, acquires setting target information that is information regarding evaluation, the information being intended to be set for the vehicle operation plan by a user, derives a similarity degree between the setting target information and each pieces of the evaluation information, extracts evaluation information on the basis of the similarity degree, receives a setting for information regarding evaluation related to the vehicle operation plan from the user while presenting similar evaluation information which is the extracted evaluation information to the user and generates evaluation information on the basis of a received content.Type: ApplicationFiled: August 26, 2020Publication date: October 13, 2022Inventors: Takeshi HANDA, Ryota UEMATSU, Takashi WAKAMIYA
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Publication number: 20220236662Abstract: The electro-conductive member has an electro-conductive support, and an electro-conductive layer, in which the electro-conductive layer has a matrix including a first rubber cross-linked product and domains dispersed in the matrix, each of the domains includes a second rubber cross-linked product and electro-conductive particles, an outer surface of the electro-conductive member has concave portions, a surface of at least a part of the domains is exposed to the outer surface of the electro-conductive member at bottom portions of the concave portions, a volume resistivity of the matrix is greater than 1×1012 ?cm, a volume resistivity of the electro-conductive layer is 1×105 ?cm to 1×108 ?cm, and A2 is 20 times or more of A1.Type: ApplicationFiled: April 11, 2022Publication date: July 28, 2022Inventors: Atsushi Uematsu, Takumi Furukawa, Takashi Hiramatsu
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Patent number: 10290390Abstract: This invention relates to silane moisture curable polymer composition and more particularly, to such a polymer composition that is highly diluted by a non-silane containing component, while retaining good high temperatures properties. The invention is a polymer composition comprising a base resin comprising less than 59 wt % of a silane crosslinkable polyethylene (A), an thermoplastic polyolefin free from silane groups (B) wherein the polymer composition comprise a filler with a BET Nitrogen Surface Area larger than 3 m2/g (C). The invention also relates to a cable layer of such polymer composition suitably a semiconducting layer of a power cable.Type: GrantFiled: February 20, 2015Date of Patent: May 14, 2019Assignee: BOREALIS AGInventors: Takashi Uematsu, Ola Fagrell, Asa Hermansson, Asa Linder
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Publication number: 20190136009Abstract: The invention provides a novel semiconductive polymer composition with improved smoothness and dispersibility of carbon black when compounding the polymer composition and feasible balance with other properties such as volume resistivity. The semiconductive polymer composition comprises (a) from 30 to 90 wt % of a polymer component, (b) from 10 to 70 wt % of carbon black and the carbon black (b) has a mass pellet strength (MPS) according to ASTM D1937-13 of from 50 to 250 N. The invention further relates to a process for preparing the semiconductive polymer composition comprising the steps of: i) introducing 30-90 wt % of a polymer component as defined above and 0-8 wt % additives in a mixer device and mixing the polymer component and additives at elevated temperature such that a polymer melt is obtained; ii) adding 10-70 wt % of a carbon black as defined above to the polymer melt and further mixing of the polymer melt.Type: ApplicationFiled: November 1, 2018Publication date: May 9, 2019Inventors: Takashi UEMATSU, Christer SVANBERG, Karl-Michael JÄGER, Fredrik SKOGMAN, Koenraad NOYENS, Peter WALTER, Malin JOHANSSON
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Patent number: 9728295Abstract: The present invention relates to a new semiconductive composition, which comprises 50 to 98 weight percentage (wt %) of a polymer blend, 2 to 50 wt % of a conductive filler and 0.05 to 2 wt % of an antioxidant; wherein said polymer blend comprises 10 to 99 wt % of a multimodal high density polyolefin, which high density polyolefin has a density which is from 930 to 970 kg/m3 and a melt flow rate (MFR2@190° C.) according to ISO 1133 (190° C., 2.16 kg) which is less than 1.6 g/10 min, and 1 to 90 wt % of a thermoplastic elastomer, a process for producing a semiconductive composition, and a semiconductive jacket comprising the semiconductive composition, and a power cable comprising the semiconductive jacket or comprising the semiconductive composition, or use of a semiconductive jacket or a semiconductive composition in, for example, a power cable.Type: GrantFiled: August 30, 2013Date of Patent: August 8, 2017Assignee: BOREALIS AGInventors: Takashi Uematsu, Christer Svanberg, Niklas Thorn, Karl-Michael Jager, Asa Linder, Lars Westling
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Publication number: 20170011817Abstract: This invention relates to silane moisture curable polymer composition and more particularly, to such a polymer composition that is highly diluted by a non-silane containing component, while retaining good high temperatures properties. The invention is a polymer composition comprising a base resin comprising less than 59 wt % of a silane crosslinkable polyethylene (A), an thermoplastic polyolefin free from silane groups (B) wherein the polymer composition comprise a filler with a BET Nitrogen Surface Area larger than 3 m2/g (C). The invention also relates to a cable layer of such polymer composition suitably a semiconducting layer of a power cable.Type: ApplicationFiled: February 20, 2015Publication date: January 12, 2017Inventors: Takashi UEMATSU, Ola FAGRELL, Asa HERMANSSON, Asa LINDER
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Patent number: 9543056Abstract: The present invention relates to a semiconductive polyolefin composition comprising graphene nanoplatelets. It also relates to a semiconductive polyolefin composition comprising the combination of graphene nanoplatelets and carbon black. Moreover, the present invention is related to a process for producing the semiconductive polyolefin composition as well to the use of the semiconductive polyolefin composition in a power cable. Further, the invention is also related to an article, preferably a power cable comprising at least one semiconductive layer comprising said polyolefin composition.Type: GrantFiled: April 5, 2011Date of Patent: January 10, 2017Assignee: BOREALIS AGInventors: Christer Svanberg, Tung Pham, Muhammad Ali Malik, Francis Costa, Yi Liu, Takashi Uematsu, Thomas Gkourmpis
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Patent number: 9505860Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal, characterized in that a polyunsaturated olefin grade is used as a starting material which yields a percentage of less than 6.3% in the zero conversion test or which has a decomposition temperature as measured by DSC of 130° C. or more.Type: GrantFiled: March 12, 2013Date of Patent: November 29, 2016Assignee: Borealis AGInventors: Takashi Uematsu, Thomas Hjertberg, Mattias Bergqvist, Bjorn Voigt, Bernt-Ake Sultan
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Publication number: 20160311998Abstract: The invention provides a novel semiconductive polymer composition with improved smoothness and dispersibility of carbon black when compounding the polymer composition and feasible balance with other properties such as volume resistivity. The semiconductive polymer composition comprises (a) from 30 to 90 wt % of a polymer component, (b) from 10 to 70 wt % of carbon black and the carbon black (b) has a mass pellet strength (MPS) according to ASTM D1937-13 of from 50 to 250 N. The invention further relates to a process for preparing the semiconductive polymer composition comprising the steps of: i) introducing 30-90 wt % of a polymer component as defined above and 0-8 wt % additives in a mixer device and mixing the polymer component and additives at elevated temperature such that a polymer melt is obtained; ii) adding 10-70 wt % of a carbon black as defined above to the polymer melt and further mixing of the polymer melt.Type: ApplicationFiled: December 18, 2014Publication date: October 27, 2016Inventors: Takashi UEMATSU, Christer SVANBERG, Karl-Michael JÄGER, Fredrik SKOGMAN, Koenraad NOYENS, Peter WALTER, Malin JOHANSSON
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Patent number: 9249288Abstract: The present invention relates to a flame retardant polymer composition comprising a crosslinkable terpolymer comprising ethylene monomer units, a silane group containing comonomer units and comonomer units comprising a polar group; a metal carbonate filler and a silicone fluid or gum; wherein the content of the comonomer units comprising a polar group is between 2 and 25 wt % of the terpolymer and the content of the silane group containing comonomer units is between 0.2 and 4 wt % of the terpolymer. The present invention is also directed to the process for the production of the polymer composition, to a cable and/or to an electrical device having a layer comprising said polymer composition, and uses thereof.Type: GrantFiled: April 29, 2013Date of Patent: February 2, 2016Assignee: BOREALIS AGInventors: Urban Andreasson, Takashi Uematsu, Bernt-Ake Sultan, Martin Anker, Oscar Prieto
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Publication number: 20150170787Abstract: The present invention relates to a new semiconductive composition, which comprises 50 to 98 weight percentage (wt %) of a polymer blend, 2 to 50 wt % of a conductive filler and 0.05 to 2 wt % of an antioxidant; wherein said polymer blend comprises 10 to 99 wt % of a multimodal high density polyolefin, which high density polyolefin has a density which is from 930 to 970 kg/m3 and a melt flow rate (MFR2@190° C.) according to ISO 1133 (190° C., 2.16 kg) which is less than 1.6 g/10 min, and 1 to 90 wt % of a thermoplastic elastomer, a process for producing a semiconductive composition, and a semiconductive jacket comprising the semiconductive composition, and a power cable comprising the semiconductive jacket or comprising the semiconductive composition, or use of a semiconductive jacket or a semiconductive composition in, for example, a power cable.Type: ApplicationFiled: August 30, 2013Publication date: June 18, 2015Inventors: Takashi Uematsu, Christer Svanberg, Niklas Thorn, Karl-Michael Jager, Asa Linder, Lars Westling
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Publication number: 20150112007Abstract: The present invention relates to a flame retardant polymer composition comprising a crosslinkable terpolymer comprising ethylene monomer units, a silane group containing comonomer units and comonomer units comprising a polar group; a metal carbonate filler and a silicone fluid or gum; wherein the content of the comonomer units comprising a polar group is between 2 and 25 wt % of the terpolymer and the content of the silane group containing comonomer units is between 0.2 and 4 wt % of the terpolymer. The present invention is also directed to the process for the production of the polymer composition, to a cable and/or to an electrical device having a layer comprising said polymer composition, and uses thereof.Type: ApplicationFiled: April 29, 2013Publication date: April 23, 2015Applicant: BOREALIS AGInventors: Urban Andreasson, Takashi Uematsu, Bernt-Ake Sultan, Martin Anker, Oscar Prieto
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Publication number: 20150073104Abstract: The present invention relates to a high-pressure radical ethylene polymerization process in which ethylene is polymerized with a polyunsaturated olefin comprising at least 6 carbon atoms and at least two non-conjugated double bonds of which at least one is terminal, characterized in that a polyunsaturated olefin grade is used as a starting material which yields a percentage of less than 6.3% in the zero conversion test or which has a decomposition temperature as measured by DSC of 130° C. or more.Type: ApplicationFiled: March 12, 2013Publication date: March 12, 2015Applicant: BOREALIS AGInventors: Takashi Uematsu, Thomas Hjertberg, Mattias Bergqvist, Bjorn Voigt, Bernt-Ake Sultan
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Publication number: 20150004411Abstract: The present invention relates to a semi-conductive polymer composition, the present invention provides a semi-conductive polymer composition comprising an ethylene copolymer comprising polar co-monomer units; an olefin homo- or copolymer; and a conductive filler; wherein the olefin homo- or copolymer has a degree of crystallinity below 20%. The invention also relates to a wire or cable comprising said semi-conductive polymer composition, and to the use of said composition for the production of a layer, preferably a semi-conducting shield layer of a wire or cable.Type: ApplicationFiled: January 31, 2013Publication date: January 1, 2015Applicant: BOREALIS AGInventors: Muhammad Ali Malik, Christer Svanberg, Thomas Gkourmpis, Takashi Uematsu, Roger Carlsson, Niklas Thorn, Jenny-Ann Ostlund
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Publication number: 20140199547Abstract: The invention relates to a crosslinkable semiconductive polymer composition comprising (a) a polyolefin, carbon black and a compound (b), to a cable, preferably to a crosslinkable comprising the polymer composition, to a production thereof, and preferably to a crosslinked cable comprising the polymer composition of the invention.Type: ApplicationFiled: August 17, 2011Publication date: July 17, 2014Applicant: BOREALIS AGInventors: John Jamieson, Annika Smedberg, Christer Svanberg, Jenny-Ann Ostlund, Ola Fagrell, Perry Nylander, Takashi Uematsu, Thomas Hjertberg, Thomas Steffel
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Publication number: 20130037759Abstract: The present invention relates to a semiconductive polyolefin composition comprising graphene nanoplatelets. It also relates to a semiconductive polyolefin composition comprising the combination of graphene nanoplatelets and carbon black. Moreover, the present invention is related to a process for producing the semiconductive polyolefin composition as well to the use of the semiconductive polyolefin composition in a power cable. Further, the invention is also related to an article, preferably a power cable comprising at least one semiconductive layer comprising said polyolefin composition.Type: ApplicationFiled: April 5, 2011Publication date: February 14, 2013Applicant: BOREALIS AGInventors: Christer Svanberg, Tung Pham, Muhammad Ali Malik, Francis Costa, Yi Liu, Takashi Uematsu, Thomas Gkourmpis
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Publication number: 20070062643Abstract: A method of separating an adhesive-bonded body is provided, by which a pair of pieces bonded together by using an adhesive can be easily securely separated from each other, wherein the adhesive has excellent adhesive force without being influenced by environmental temperature, excellent storage stability and wide scope of selection of the piece to be bonded. An adhesive-bonded body 1 includes a pair of pieces 2 bonded together and an adhesive layer 4. The adhesive layer 4 bonds the pair of pieces 2 to each other. Ultrasonic vibration is applied to the adhesive-bonded body 1 which is put between a tool horn 6 and an anvil 7 of an ultrasonic vibration applying device 3. The ultrasonic vibration is generated by applying a voltage to a piezoelectric vibrator 5 and vibrates the tool horn 6. The tool horn 6 vibrates ultrasonically together with one piece 2. The pair of the pieces 2 bonded together shifts relatively each other due to the ultrasonic vibration.Type: ApplicationFiled: September 9, 2004Publication date: March 22, 2007Inventors: Yoshihiko Watanabe, Takashi Uematsu, Yuichiro Yamamura, Mikotoshi Suematsu, Shinishi Yamaguchi, Masanori Matsuda
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Publication number: 20060177517Abstract: An object of the present invention is to provide an anti-inflammatory agent and an anti-inflammatory medical material, which have a good anti-inflammatory effect and high safety. The present invention relates to an anti-inflammatory agent and an anti-inflammatory medical material, which contain as an active ingredient a polyphosphoric acid that is particularly 1 type of liner phosphoric acid represented by a general formula Hn+2(PnO3n+1) (wherein n denotes an integer between 3 and 800) or a mixture of 2 or more types of such linear phosphoric acid.Type: ApplicationFiled: February 25, 2004Publication date: August 10, 2006Inventors: Toshikazu Shiba, Toshie Shiba, Mimoru Yamaoka, Takashi Uematsu, Yoshiharu Takahashi, Hitoshi Tanaka, Takao Kogo, Masanobu Shindo