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: 9505958Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene.?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene.?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: GrantFiled: September 13, 2013Date of Patent: November 29, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Ikuo Akai, Tomohiro Abe, Koya Yoshimoto, Masayoshi Yamaguchi, Shinya Tanaka, Koji Matsunaga, Makoto Egawa
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Patent number: 9450698Abstract: The optical transmission device includes an N×N optical switch, an optical packet receiver and an optical packet generation unit. The N×N optical switch transmits data in which a plurality of optical signals each having a different wavelength is multiplexed. The optical packet receiver detects change in the number of wavelengths of optical signals constituting the data. The optical packet generation unit generates, when the change is detected by the optical packet receiver, data to be transmitted by the N×N optical switch, using optical signals for the number of wavelengths after the change.Type: GrantFiled: June 3, 2014Date of Patent: September 20, 2016Assignee: FUJITSU LIMITEDInventors: Koji Matsunaga, Tatsuya Toyozumi, Yasuo Tanaka, Yuichiro Sakane, Koji Bato, Wataru Kawasaki, Tatsuhiko Saito
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Patent number: 9273202Abstract: 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: GrantFiled: August 28, 2009Date of Patent: March 1, 2016Assignee: MITSUI CHEMICALS, INC.Inventors: Hiroshi Hoya, Koji Matsunaga, Yoji Hayakawa, Hiroto Yasui, Shin Tokui
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Patent number: 9270382Abstract: An optical communication apparatus includes a variable resistor unit, a measurement unit, and a control unit. The variable resistor unit is arranged at a pre-stage of an electrical/optical conversion unit, which converts an electrical signal obtained by converting an input packet to an optical signal having a waveform corresponding to a potential difference between a positive phase component and a negative phase component of the electrical signal by using the potential difference. The variable resistor unit provides a resistor that varies a midpoint of potential of the positive phase component or the negative phase component. The measurement unit measures a ratio of a presence period, which is a period where the input packet is present, to a sum of the presence period and a non-presence period. The control unit controls a value of the resistor provided to the positive phase component or the negative phase component based on the ratio.Type: GrantFiled: June 3, 2014Date of Patent: February 23, 2016Assignee: FUJITSU LIMITEDInventors: Yuichiro Sakane, Koji Matsunaga, Yasuo Tanaka, Tatsuya Toyozumi, Koji Bato, Wataru Kawasaki, Tatsuhiko Saito
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Publication number: 20160049809Abstract: A storage battery includes an electricity storage unit (10) including a first battery cell group in which a plurality of first battery cells (10-1, and the like) are connected in series, an auxiliary electricity storage unit (11) including a second battery cell group in which a plurality of second battery cells (11-1, and the like) capable of performing higher-speed charging and discharging in comparison to the first battery cells (10-1, and the like) are connected in series, a voltage adjustment unit (14) that performs voltage adjustment during power delivery between the electricity storage unit (10) and the auxiliary electricity storage unit (11), a first switching unit (12) which is capable of individually connecting the plurality of first battery cells (10-1, and the like) to the voltage adjustment unit (14), and which is capable of connecting the first battery cells to the voltage adjustment unit (14) in an individual combination unit of two or more of the first battery cells (10-1, and the like), and aType: ApplicationFiled: March 7, 2014Publication date: February 18, 2016Inventors: Hiroshi KAJITANI, Koji MATSUNAGA, Katsuya ONOSE
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Publication number: 20160020866Abstract: An optical transmitter includes a dummy optical source, a polarized wave beam coupler, and an auto gain control (AGC)-system amplifier. The dummy optical source outputs, out of an optical signal in which an optical path signal and an optical packet signal are mixed, a dummy signal having a wavelength identical to that of the optical packet signal. The polarized wave beam coupler multiplexes the dummy signal with the optical signal so that the dummy signal is orthogonal to the optical signal so as to output an output signal. The AGC-system amplifier inputs the output signal, and amplifies the output signal with a predetermined amplification factor corresponding to a power difference between input power and output power of an optical amplifier.Type: ApplicationFiled: June 24, 2015Publication date: January 21, 2016Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: Koji BATO, TOMOYUKI SAKATA, Tatsuro Kishida, Koji Matsunaga, Tatsuya Toyozumi, Yuichiro Sakane, Wataru Kawasaki
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Publication number: 20160020852Abstract: An optical transmitter includes an amplifying unit, a monitor, an identifying unit, and a controlling unit. The amplifying unit amplifies an optical signal in which an optical packet signal is mixed in optical path signals. The monitor monitors power of the optical signal on an input stage and an output stage of the optical amplifying unit, respectively. The identifying unit identifies an optical packet signal section on the input stage side based on the monitoring result on the input stage side, and identifies an optical packet signal section on the output stage side based on the monitoring result on the output stage side. The controlling unit compares the power of the identified section on the input stage side with the power of the identified section on the output stage side, and controls an amplification factor of the amplifying unit based on a power difference resulting from the comparison.Type: ApplicationFiled: June 23, 2015Publication date: January 21, 2016Inventors: Koji BATO, Tomoyuki SAKATA, Tatsuro KISHIDA, Koji MATSUNAGA, Tatsuya TOYOZUMI, Yuichiro SAKANE, Tomonori YAMADA
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Publication number: 20160013521Abstract: A storage battery (1) including an electric storage unit (10), an auxiliary electric storage unit (11) connected to the electric storage unit (10) in parallel, a temperature measurement unit (13) measuring a temperature, and a charge and discharge control unit (14) controlling charge and discharge of the electric storage unit (10) and the auxiliary electric storage unit (11), in which the charge and discharge control unit (14) changes an SOC (a charge completion SOC) of the electric storage unit (10) and the auxiliary electric storage unit (11) in a charge completion state of not allowing any more charge according to a measurement result of the temperature measurement unit (13), increases the charge completion SOC of the auxiliary electric storage unit (11) when the charge completion SOC of the electric storage unit (10) decreases, and decreases the charge completion SOC of the auxiliary electric storage unit (11) when the charge completion SOC of the electric storage unit (10) increases.Type: ApplicationFiled: February 26, 2014Publication date: January 14, 2016Applicant: NEC CorporationInventors: Koji MATSUNAGA, Hiroshi KAJITANI, Katsuya ONOSE
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Patent number: 9112637Abstract: An optical transmission device that receives a wavelength division multiplexed optical signal obtained by dividing an optical packet signal and performing wavelength multiplexing and that transmits via an optical switch the received wavelength division multiplexed optical signal includes an optical power level measurement unit configured to measure respective optical power levels of respective optical signals of wavelengths included in the wavelength division multiplexed optical signal, and a routing information determinator configured to determine routing information of the wavelength division multiplexed optical signal on the basis of the measured optical power levels.Type: GrantFiled: October 11, 2013Date of Patent: August 18, 2015Assignees: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: Yuichiro Sakane, Koji Bato, Tatsuya Toyozumi, Koji Matsunaga, Wataru Kawasaki, Tatsuhiko Saito
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Publication number: 20150225623Abstract: An object of the invention is to provide compositions which have low-temperature heat sealing properties, are free from stickiness, may achieve a heat seal strength controlled within a certain definite range when heat sealing takes place at low temperatures, have small changes in heat seal strength with time, and are such that in the packaging applications, the strength required to open the packages may be easily controlled within a certain definite range, and high-performance packages may be designed. The invention resides in a 1-butene ?-olefin copolymer composition including 99 to 1 parts by mass of at least one olefin polymer (X) selected from propylene polymers (X-1) and ethylene polymers (X-2), and 1 to 99 parts by mass of a 1-butene ?-olefin copolymer (Y) containing 0.1 to 30 mol % of one or more ?-olefins selected from ?-olefins and having a molecular weight distribution (Mw/Mn) of 1.0 to 3.5 [wherein the total of (X) and (Y) in the composition is 100 parts by mass].Type: ApplicationFiled: September 13, 2013Publication date: August 13, 2015Inventors: Ikuo Akai, Tomohiro Abe, Koya Yoshimoto, Masayoshi Yamaguchi, Shinya Tanaka, Koji Matsunaga, Makoto Egawa
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Publication number: 20150229142Abstract: Secondary battery cells (100) are connected in series. A measurement unit (120) measures the sum of the voltages of the plurality of secondary battery cells (100). A balance circuit (140) equalizes the voltages of the plurality of secondary battery cells (100). A control unit (160) controls the balance circuit (140). Specifically, the control unit (160) operates the balance circuit (140) when the charging rate of the plurality of secondary battery cells (100) is equal to or less than 50% or the sum of the voltages of the plurality of secondary battery cells (100) is equal to or less than a first reference value and an absolute value of a differential value of a graph indicating the sum of the voltages when the charging rate is a variable is equal to or less than a second reference value.Type: ApplicationFiled: July 19, 2013Publication date: August 13, 2015Inventors: Shingo Takahashi, Koji Matsunaga, Nobuhide Yoshida, Noriyuki Itabashi, Yuan Luo
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Publication number: 20140355980Abstract: An optical communication apparatus includes a variable resistor unit, a measurement unit, and a control unit. The variable resistor unit is arranged at a pre-stage of an electrical/optical conversion unit, which converts an electrical signal obtained by converting an input packet to an optical signal having a waveform corresponding to a potential difference between a positive phase component and a negative phase component of the electrical signal by using the potential difference. The variable resistor unit provides a resistor that varies a midpoint of potential of the positive phase component or the negative phase component. The measurement unit measures a ratio of a presence period, which is a period where the input packet is present, to a sum of the presence period and a non-presence period. The control unit controls a value of the resistor provided to the positive phase component or the negative phase component based on the ratio.Type: ApplicationFiled: June 3, 2014Publication date: December 4, 2014Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: Yuichiro Sakane, Koji Matsunaga, Yasuo Tanaka, Tatsuya Toyozumi, Koji Bato, Wataru Kawasaki, Tatsuhiko Saito
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Publication number: 20140355976Abstract: The optical transmission device includes an N×N optical switch, an optical packet receiver and an optical packet generation unit. The N×N optical switch transmits data in which a plurality of optical signals each having a different wavelength is multiplexed. The optical packet receiver detects change in the number of wavelengths of optical signals constituting the data. The optical packet generation unit generates, when the change is detected by the optical packet receiver, data to be transmitted by the N×N optical switch, using optical signals for the number of wavelengths after the change.Type: ApplicationFiled: June 3, 2014Publication date: December 4, 2014Applicants: FUJITSU LIMITED, FUJITSU TELECOM NETWORKS LIMITEDInventors: Koji Matsunaga, Tatsuya Toyozumi, Yasuo Tanaka, Yuichiro Sakane, Koji Bato, Wataru Kawasaki, Tatsuhiko Saito
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Patent number: 8891966Abstract: 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: GrantFiled: April 17, 2012Date of Patent: November 18, 2014Assignees: Fujitsu Limited, Fujitsu Telecom Networks LimitedInventors: Tatsuya Toyozumi, Koji Matsunaga, Yasuo Tanaka, Hironobu Fukuura, Wataru Kawasaki, Shota Mori
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Patent number: 8877856Abstract: Provided is an adhesive resin composition having improved heat resistance without deteriorations in adhesive strength and flexibility. The adhesive resin composition comprises 30 to 98 wt % of an ethylene/vinyl acetate copolymer (a) and 70 to 2 wt % of a propylene resin composition (P), wherein the total of the component (a) and the component (P) is 100 wt %. The propylene resin composition (P) comprises 60 to 0 wt % of a propylene polymer (b) having a melting point of 120 to 170° C. and a melt flow rate of 0.1 to 500 g/10 min, and 40 to 100 wt % of a propylene polymer (c) having a melting point of less than 120° C. or showing no melting points and having a melt flow rate of 0.1 to 500 g/10 min, wherein the total of the component (b) and the component (c) is 100 wt %.Type: GrantFiled: January 17, 2012Date of Patent: November 4, 2014Assignee: Mitsui Chemicals, Inc.Inventors: Hiroto Yasui, Koji Matsunaga
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Publication number: 20140248488Abstract: [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: May 9, 2014Publication date: September 4, 2014Applicant: Mitsui Chemicals, Inc.Inventors: 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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Patent number: 8765872Abstract: [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: GrantFiled: January 10, 2011Date of Patent: July 1, 2014Assignee: Mitsui Chemicals, Inc.Inventors: 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: 20140112661Abstract: An optical transmission device that receives a wavelength division multiplexed optical signal obtained by dividing an optical packet signal and performing wavelength multiplexing and that transmits via an optical switch the received wavelength division multiplexed optical signal includes an optical power level measurement unit configured to measure respective optical power levels of respective optical signals of wavelengths included in the wavelength division multiplexed optical signal, and a routing information determinator configured to determine routing information of the wavelength division multiplexed optical signal on the basis of the measured optical power levels.Type: ApplicationFiled: October 11, 2013Publication date: April 24, 2014Applicants: FUJITSU TELECOM NETWORKS LIMITED, FUJITSU LIMITEDInventors: Yuichiro Sakane, Koji BATO, Tatsuya Toyozumi, KOJI MATSUNAGA, WATARU KAWASAKI, TATSUHIKO SAITO
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Publication number: 20130296476Abstract: Object: To provide adhesive resin compositions improved in heat resistance without deteriorations in adhesive strength and flexibility. Solution: An adhesive resin composition comprises 30 to 98 wt % of an ethylene/vinyl acetate copolymer (a) and 70 to 2 wt % of a propylene resin composition (P) described below (wherein the total of the component (a) and the component (P) is 100 wt %). The propylene resin composition (P) comprises 60 to 0 wt % of a propylene polymer (b) having a melting point of 120 to 170° C. and a melt flow rate of 0.1 to 500 g/10 min, and 40 to 100 wt % of a propylene polymer (c) having a melting point of less than 120° C. or showing no melting points and having a melt flow rate of 0.1 to 500 g/10 min (wherein the total of the component (b) and the component (c) is 100 wt %).Type: ApplicationFiled: January 17, 2012Publication date: November 7, 2013Inventors: Hiroto Yasui, Koji Matsunaga
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Patent number: 8508295Abstract: 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: GrantFiled: April 22, 2009Date of Patent: August 13, 2013Assignee: NEC CorporationInventor: Koji Matsunaga