Patents by Inventor Koji Matsunaga
Koji Matsunaga 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: 8470449Abstract: It is an object of the present invention to provide a propylene-based polymer composition which is excellent in transparency and heat resistance (particularly, heat resistance at high heat deformation temperature) and is free from occurrence of stickiness even when it is used at a high temperature for a long period of time. The propylene-based polymer composition of the invention comprises (A) a propylene-based polymer (PP) satisfying the following requirements (1) and (2), in an amount of 1 to 99 parts by weight, and (B) a propylene/ethylene/?-olefin copolymer satisfying the following requirements (I) to (IV), in an amount of 99 to 1 part by weight, with the proviso that the total amount of the component (A) and the component (B) is 100 parts by weight; (1) the polymer (A) has a melting point (Tm), as measured by a differential scanning calorimeter (DSC), of not lower than 110° C. but not higher than 170° C.Type: GrantFiled: December 23, 2008Date of Patent: June 25, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Koji Matsunaga, Yoji Hayakawa, Kunihiko Mizumoto
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Publication number: 20120315039Abstract: An optical packet switching device causes branching of an optical packet that is input to an optical switch and detects a synchronization pattern having a predetermined number of bits from the branched optical packet. Then, the optical packet switching device calculates a synchronization point indicating a location of the synchronization pattern with respect to a detection timing and controls, in accordance with the calculated synchronization point, a delay amount of a delay element that delays an optical packet ON signal that is output to the optical switch.Type: ApplicationFiled: April 17, 2012Publication date: December 13, 2012Applicants: FUJITSU TELECOM NETWORKS LIMITED, FUJITSU LIMITEDInventors: Tatsuya TOYOZUMI, Koji MATSUNAGA, Yasuo TANAKA, Hironobu FUKUURA, Wataru KAWASAKI, Shota MORI
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Propylene-based polymer, propylene-based polymer composition, pellet and pressure-sensitive adhesive
Patent number: 8288479Abstract: Propylene-based polymers (A) are provided which, when used as pressure-sensitive adhesives to various adherends, show a desired initial adhesion and will not contaminate the adherends and which have excellent pellet handling properties. Pellets of the invention contain the propylene-based polymers (A). Pressure-sensitive adhesives of the invention contain the propylene-based polymers (A). The propylene-based polymer (A) includes 65 to 80 mol % of a structural unit derived from propylene, 5 to 10 mol % of a structural unit derived from ethylene and 15 to 25 mol % of a structural unit derived from a C4-20 ?-olefin (wherein these percentages are calculated based on 100 mol % of the total of the structural unit derived from propylene, the structural unit derived from ethylene and the structural unit derived from a C4-20 ?-olefin) and has a heat of crystal fusion of 5 to 45 (J/g) as measured by DSC. Compositions of the invention contain the propylene-based polymers (A).Type: GrantFiled: February 14, 2008Date of Patent: October 16, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Ikuo Akai, Hiroshi Hoya, Yoji Hayakawa, Koji Matsunaga -
Publication number: 20120241759Abstract: A nitride semiconductor device having a high withstand voltage and being capable of reducing a leakage current, is provided. The nitride semiconductor device 30 of the present invention includes: a nitride semiconductor stack; an anode 36; and cathodes 37 and 38. The nitride semiconductor stack includes: a channel layer 33 and a wide bandgap layer 35, stacked in this order. The anode 36 forms a Schottky junction with the wide bandgap layer 35. The cathodes 37 and 38 are joined to the channel layer 33. The channel layer 33 is an n+-type nitride semiconductor layer. The bandgap of the wide bandgap layer 35 is wider than that of the channel layer 33.Type: ApplicationFiled: October 15, 2010Publication date: September 27, 2012Applicant: NEC CORPORATIONInventors: Koji Matsunaga, Masahiro Tanomura
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Patent number: 8236131Abstract: [Problem] To provide a thermoplastic resin composition which is excellent in transparency and adhesion properties and hardly causes staining of an adherend after it is separated, a multilayer laminate using the composition, an article, and a method for protecting a surface of an article. [Means for solving problem] A thermoplastic resin composition (X) comprising the following components (A) to (C): (A) isotactic polypropylene containing not less than 90% by mol of propylene units, in an amount of 1 to 65% by weight, (B) a propylene copolymer which is a copolymer of propylene and at least one ?-olefin of 2 to 20 carbon atoms (excluding propylene) and whose melting point, as measured by DSC, is lower than 65° C.Type: GrantFiled: July 2, 2007Date of Patent: August 7, 2012Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Hoya, Yoji Hayakawa, Koji Matsunaga
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Publication number: 20120012908Abstract: The semiconductor device of the present invention includes a source electrode, a drain electrode, a gate electrode and a gate power feeding line. The gate electrode is disposed between said source electrode and said drain electrode. The gate power feeding line is connected to both ends of said gate electrode.Type: ApplicationFiled: March 26, 2010Publication date: January 19, 2012Inventor: Koji Matsunaga
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Publication number: 20110319548Abstract: The invention provides a thermoplastic elastomer composition that has an excellent balance between flexibility and heat resistance (creep resistance), shows little tackiness (stickiness) and is not deteriorated in design properties even when exposed to a high temperature. A thermoplastic elastomer composition (X) includes a propylene copolymer (A) satisfying all the requirements (A1) to (A3) described below, a crystalline polyolefin polymer (B) which is optional, and a styrene block copolymer (C). (A1) The Shore A hardness is in the range of 50 to 90. (A2) The copolymer gives a melting peak Tm in the range of 30 to 95° C., and the endothermic enthalpy ?H corresponding to the melting peak is in the range of 1.0 to 20 J/g. (A3) The molecular weight distribution Mw/Mn is in the range of 1.2 to 3.0.Type: ApplicationFiled: March 11, 2010Publication date: December 29, 2011Inventors: Hiroshi Hoya, Yoji Hayakawa, Koji Matsunaga
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Patent number: 8019219Abstract: An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto, transmits the multiple control signals to the optical switch section through multiple signal transmission lines and controls the ON/OFF states of multiple optical switches are included, and delay measuring means for measuring a difference in delay time among the multiple signal transmission lines is provided. In this case, the control section adjusts the transmission times of the multiple switch control signals such that the difference in delay time measured by the delay measuring means can be cancelled and that the multiple switch control signals transmitted through the multiple signal transmission lines can arrive at the multiple optical switches simultaneously and transmits the multiple switch control signals.Type: GrantFiled: March 11, 2008Date of Patent: September 13, 2011Assignee: Fujitsu LimitedInventors: Koji Matsunaga, Yutaka Kai
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Publication number: 20110172348Abstract: It is an object of the present invention to provide adhesive compositions having excellent flexibility, rubber elasticity, mechanical properties, heat resistance and low-temperature properties. An adhesive composition of the invention includes 10 to 70 parts by weight of a soft polypropylene resin composition (X) which includes 40 to 98 wt % of a propylene copolymer (A) satisfying the following requirements (A1) to (A8) and 2 to 60 wt % of a crystalline isotactic polypropylene (B) satisfying the following requirements (B1) to (B3), and 30 to 90 parts by weight of a tackifier (C) (wherein the total of the component (X) and the component (C) is 100 parts by weight), wherein (A1) Shore A hardness: 20 to 90; (A2) the copolymer comprises a copolymer with C3 units at 51 to 90 mol %, C2 units at 7 to 24 mol % and C4-20 ?-olefin units at 3 to 25 mol %; (A3) Mw/Mn: 1.2 to 3.5; (A4) mm: 85 to 99.9%; (A5) value B: 0.8 to 1.3; (A6) 2,1-insertion ratio: less than 1%; (A7) Tg: ?10° C. to ?50° C.; (A8) MFR (230° C.): 0.Type: ApplicationFiled: August 28, 2009Publication date: July 14, 2011Inventors: Hiroshi Hoya, Koji Matsunaga, Yoji Hayakawa, Hiroto Yasui, Shin Tokui
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Publication number: 20110165416Abstract: [Object] To provide a resin composition with excellent mold releasability and blocking resistance. [Solution] A resin composition containing a 4-methyl-1-pentene polymer includes 0.01 to 10 parts by mass of a 4-methyl-1-pentene polymer (B) per 100 parts by mass of at least one resin (A) selected from the group consisting of thermoplastic resins and thermosetting resins, wherein the 4-methyl-1-pentene polymer (B) has (B1) an intrinsic viscosity [?] of 0.01 or more but less than 0.50 dl/g measured at 135° C. in a decalin solvent.Type: ApplicationFiled: January 10, 2011Publication date: July 7, 2011Inventors: Kuniaki KAWABE, Masayoshi Sutou, Toshiyuki Itou, Mai Kurihara, Akinori Etoh, Shinichirou Asao, Kenji Sugimura, Hiroshi Hoya, Koji Matsunaga, Yoji Hayakawa, Kunihiko Mizumoto
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Publication number: 20110025412Abstract: A amplifier that obtains an output by power combining, comprising: a distribution circuit that distributes an input signal into two signals; a first amplifier circuit that amplifies one of the two signals distributed by the distribution circuit and operates in class AB mode; a second amplifier circuit that amplifies the other of the two signals distributed by the distribution circuit and operates in class B or C mode; a lumped constant circuit that connects outputs of the first and second amplifier circuits; a first impedance transformation circuit connected to an output of the first amplifier circuit; a second impedance transformation circuit connected to an output of the second amplifier circuit, and a quarter wavelength impedance transformation circuit with one end thereof connected to a combining point of output sides of the first and second impedance transformation circuits and with the other end thereof connected to a load (FIG. 1).Type: ApplicationFiled: April 22, 2009Publication date: February 3, 2011Inventor: Koji Matsunaga
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PROPYLENE-BASED POLYMER, PROPYLENE-BASED POLYMER COMPOSITION, PELLET AND PRESSURE-SENSITIVE ADHESIVE
Publication number: 20100093941Abstract: Propylene-based polymers (A) are provided which, when used as pressure-sensitive adhesives to various adherends, show a desired initial adhesion and will not contaminate the adherends and which have excellent pellet handling properties. Pellets of the invention contain the propylene-based polymers (A). Pressure-sensitive adhesives of the invention contain the propylene-based polymers (A). The propylene-based polymer (A) includes 65 to 80 mol % of a structural unit derived from propylene, 5 to 10 mol % of a structural unit derived from ethylene and 15 to 25 mol % of a structural unit derived from a C4-20 ?-olefin (wherein these percentages are calculated based on 100 mol % of the total of the structural unit derived from propylene, the structural unit derived from ethylene and the structural unit derived from a C4-20 ?-olefin) and has a heat of crystal fusion of 5 to 45 (J/g) as measured by DSC. Compositions of the invention contain the propylene-based polymers (A).Type: ApplicationFiled: February 14, 2008Publication date: April 15, 2010Inventors: Ikuo Akai, Hiroshi Hoya, Yoji Hayakawa, Koji Matsunaga -
Publication number: 20090314429Abstract: [Problem] To provide a thermoplastic resin composition which is excellent in transparency and adhesion properties and hardly causes staining of an adherend after it is separated, a multilayer laminate using the composition, an article, and a method for protecting a surface of an article. [Means for solving problem] A thermoplastic resin composition (X) comprising the following components (A) to (C): (A) isotactic polypropylene containing not less than 90% by mol of propylene units, in an amount of 1 to 65% by weight, (B) a propylene copolymer which is a copolymer of propylene and at least one ?-olefin of 2 to 20 carbon atoms (excluding propylene) and whose melting point, as measured by DSC, is lower than 65° C.Type: ApplicationFiled: July 2, 2007Publication date: December 24, 2009Inventors: Hiroshi Hoya, Yoji Hayakawa, Koji Matsunaga
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Patent number: 7609665Abstract: A wireless repeater on a communication line has a structure that includes a plurality of wireless communication media, and a band control unit that changes the first bandwidth of the communications line according to increase and decrease in the number of wireless communication media by an operation dividing the first bandwidth of the communications line into a plurality of second bandwidths and an operation multiplexing a plurality of second bandwidths adjusting to the first bandwidth, responding to the number of the wireless communication media.Type: GrantFiled: April 8, 2005Date of Patent: October 27, 2009Assignee: Fujitsu LimitedInventors: Koichiro Nakayama, Hiroki Tamura, Shinji Takao, Koji Matsunaga, Kenichi Ishikawa, Kanna Okamura, Junichi Sawada, Hidetoshi Amari
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Patent number: 7529240Abstract: A transmission device capable of configuring a communication network over which MC packets are forwarded in a way that does not use bands with futility is disclosed. The transmission device is so configured to transmit, when receiving a multicast packet from a host, to the other transmission device the multicast packet that is to be discarded by the transmission device having no necessity of forwarding the received multicast packet to the next transmission device.Type: GrantFiled: February 18, 2005Date of Patent: May 5, 2009Assignee: Fujitsu LimitedInventors: Junichi Sawada, Hidetoshi Amari, Shinji Takao, Koji Matsunaga, Tatsuya Toyozumi
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Publication number: 20090060506Abstract: An optical switch section that switches the path of an optical packet transmitted thereto and outputs the optical packet, and a control section that generates multiple switch control signals in accordance with the destination of an optical packet transmitted thereto, transmits the multiple control signals to the optical switch section through multiple signal transmission lines and controls the ON/OFF states of multiple optical switches are included, and delay measuring means for measuring a difference in delay time among the multiple signal transmission lines is provided. In this case, the control section adjusts the transmission times of the multiple switch control signals such that the difference in delay time measured by the delay measuring means can be cancelled and that the multiple switch control signals transmitted through the multiple signal transmission lines can arrive at the multiple optical switches simultaneously and transmits the multiple switch control signals.Type: ApplicationFiled: March 11, 2008Publication date: March 5, 2009Applicant: FUJITSU LIMITEDInventors: Koji Matsunaga, Yutaka Kai
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Patent number: 7336782Abstract: A wiring device is used in a folding portable device including a hinge unit permitting an upper unit to fold/unfold and/or to rotate with regard to a lower unit. The wiring device comprises a rotative direction wound portion having a first central axis corresponding to a rotating axis of the hinge. A folding/unfolding direction wound portion has a second central axis corresponding to a folding/unfolding axis of the hinge. A FPC fixing member fixes a FPC holding member holding a predetermined part of a FPC to the hinge. The rotative direction wound portion is wound with a first part of a flexible printed cable that is continuous with one end of the predetermined part. The folding/unfolding direction wound portion is wound with a second part of the flexible printed cable that is continuous with the other end of the predetermined part.Type: GrantFiled: December 8, 2003Date of Patent: February 26, 2008Assignee: NEC CorporationInventors: Yosuke Watanabe, Masatomo Mizuta, Mitsuru Sendoda, Koji Matsunaga, Takeshi Komatsu
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Publication number: 20060107128Abstract: An automatic detection of failure occurrence on a network and selection of QoS table defining a priority for communication among the nodes constituting the network in response to a degeneracy situation of the network caused by the failure upon detection thereof make communications among the nodes by using the selected QoS table.Type: ApplicationFiled: February 10, 2005Publication date: May 18, 2006Applicant: Fujitsu LimitedInventors: Koji Matsunaga, Shinji Takao, Tatsuya Toyozumi, Hidetoshi Amari, Junichi Sawada
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Publication number: 20060087966Abstract: A transmission device capable of configuring a communication network over which MC packets are forwarded in a way that does not use bands with futility is disclosed. The transmission device is so configured to transmit, when receiving a multicast packet from a host, to the other transmission device the multicast packet that is to be discarded by the transmission device having no necessity of forwarding the received multicast packet to the next transmission device.Type: ApplicationFiled: February 18, 2005Publication date: April 27, 2006Applicant: Fujitsu LimitedInventors: Junichi Sawada, Hidetoshi Amari, Shinji Takao, Koji Matsunaga, Tatsuya Toyozumi
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Publication number: 20060067363Abstract: A wireless repeater on a communication line has a structure that includes a plurality of wireless communication media, and a band control unit that changes the first bandwidth of the communications line according to increase and decrease in the number of wireless communication media by an operation dividing the first bandwidth of the communications line into a plurality of second bandwidths and an operation multiplexing a plurality of second bandwidths adjusting to the first bandwidth, responding to the number of the wireless communication media.Type: ApplicationFiled: April 8, 2005Publication date: March 30, 2006Applicant: Fujitsu LimitedInventors: Koichiro Nakayama, Hiroki Tamura, Shinji Takao, Koji Matsunaga, Kenichi Ishikawa, Kanna Okamura, Junichi Sawada, Hidetoshi Amari