Patents by Inventor Minoru Saito
Minoru Saito 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: 20120189257Abstract: According to the present invention, there is provided an optical fiber, an optical fiber ribbon and an optical fiber cable that reduce both the increase in transmission loss and the decrease in strength. According to an embodiment of the present invention, there is provided an optical fiber in which an outer circumferential surface of an optical fiber is coated with a primary coating layer. In the optical fiber, the primary coating layer includes a ultraviolet curable resin, and the ultraviolet curable resin contains 0.05 or more and 0.75 or less parts by weight of a reactive silane coupling agent and 0.05 or more and 0.75 or less parts by weight of an unreactive silane coupling agent.Type: ApplicationFiled: February 15, 2012Publication date: July 26, 2012Applicant: FURUKAWA ELECTRIC CO., LTD.Inventors: Minoru KASAHARA, Minoru Saito, Yasuo Nakajima, Hiroki Tanaka
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Patent number: 8217536Abstract: A first calculation part calculates the phase-to-phase steady-state magnetic flux of the three phases of the power supply. A second calculation part calculates the phase-to-phase residual magnetic flux of the three phases in the primary windings side of the transformer when the circuit breakers interrupt the transformer. A phase detection part detects a voltage phase at which polarity and magnitude of the calculated steady-state magnetic flux and residual magnetic flux coincide. Closing control part firstly causes only the circuit breakers of the two phases to close at the detected voltage phase, and then causes the circuit breaker of the remaining one phase to close.Type: GrantFiled: June 17, 2009Date of Patent: July 10, 2012Assignee: Kabushiki Kaisha ToshibaInventors: Tadashi Koshizuka, Minoru Saito, Koichi Futagami, Hiroshi Kusuyama, Yoshimasa Sato
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Patent number: 8212423Abstract: A switching controlgear of circuit breaker 100 outputs an opening command signal or closing command signal to the circuit breaker with the maximum being 1 cycle or less of wait time when the opening command signal or closing command signal is detected, and can cause the circuit breaker to open or to close at a desired phase of the main circuit current or power system voltage. The switching controlgear of circuit breaker 100 has switching control signal output time calculation means 10 and switching command signal output delay means 20. The switching control signal output time calculation means 10 calculates the switching control signal output time using the detection timing of the opening command signal or closing command signal as a reference so that the circuit breaker opens or closes at the desired phase after the total time of the switching control signal output time and the estimated opening operation time or estimated closing operation time of the circuit breaker 620 is elapsed.Type: GrantFiled: September 25, 2007Date of Patent: July 3, 2012Assignee: Kabushiki Kaisha ToshibaInventor: Minoru Saito
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Publication number: 20120166361Abstract: A charge managing system including an image forming apparatus and a charge managing server is provided. The image forming apparatus includes plural applications each configured for executing a specific process on input data, a counter unit that counts a number of result items output as a result of executing at least one of the applications, a count value storage unit that stores a count value corresponding to the number of result items counted by the counter unit, and a storage area setting unit that secures a plurality of storage areas within the count value storage unit each of which storage areas is configured for storing a corresponding count value obtained for each of the applications. The charge managing server manages charging a fee for using the image forming apparatus based on the corresponding count value stored in each of the storage areas secured for each of the applications.Type: ApplicationFiled: March 2, 2012Publication date: June 28, 2012Inventors: Midori MURAYAMA, Chikara Kishi, Hidenao Ubukata, Minoru Saito, Minoru Sakai, Naoki Wakasugi, Nobumitsu Samukawa, Toshiyuki Shimizu, Yasushi Ogawa, Yoshiroh Someya, Ryosuke Sako, Kazumi Hanada, Kentaroh Murakawa
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Publication number: 20120143535Abstract: A substation instrument control system is disclosed. The substation instrument control system includes a plurality of transformers that generate a plurality of waveform signals representing electric properties of a substation instrument main body. A merging unit is communicatively coupled to the plurality of transformers and includes a signal processing unit and a control unit. The signal processing unit receives the plurality of waveform signals from the plurality of transformers and converts the plurality of waveform signals to a digital signal. The control unit controls operation of the signal processing unit using a setting data. An intelligent electronic device is communicatively coupled to the merging unit and receives the digital signal from the merging unit.Type: ApplicationFiled: June 10, 2011Publication date: June 7, 2012Inventors: Hiroyuki Maehara, Tomonori Nishida, Shigeki Katayama, Yukihiko Maede, Minoru Saito, Wataru Yamamori, Jun Takehara, Takaya Shono
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Patent number: 8156020Abstract: A charge managing system including an image forming apparatus and a charge managing server is provided. The image forming apparatus includes plural applications each configured for executing a specific process on input data, a counter unit that counts a number of result items output as a result of executing at least one of the applications, a count value storage unit that stores a count value corresponding to the number of result items counted by the counter unit, and a storage area setting unit that secures a plurality of storage areas within the count value storage unit each of which storage areas is configured for storing a corresponding count value obtained for each of the applications. The charge managing server manages charging a fee for using the image forming apparatus based on the corresponding count value stored in each of the storage areas secured for each of the applications.Type: GrantFiled: May 20, 2008Date of Patent: April 10, 2012Assignee: Ricoh Company, Ltd.Inventors: Midori Murayama, Chikara Kishi, Hidenao Ubukata, Minoru Saito, Minoru Sakai, Naoki Wakasugi, Nobumitsu Samukawa, Toshiyuki Shimizu, Yasushi Ogawa, Yoshiroh Someya, Ryosuke Sako, Kazumi Hanada, Kentaroh Murakawa
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Publication number: 20120050937Abstract: A switching controller for circuit breaker in which a switching control arithmetic operation unit performs arithmetic operations to determine for each circuit breaker a synchronous delay count value which is sent to each switching command control unit of the corresponding circuit breaker, which upon receiving a switching command signal from a superordinate device, counts the synchronous delay count value D, to turn on a semiconductor switch of the switching command output unit after counting completes. The switching command signal (circuit breaker drive current) is output after the synchronous switching control to the circuit breaker drive coil of the circuit breaker. The switching controller can implement cost saving and space saving, even if switching of a circuit breaker in a lower branch system, such as a power distribution system, is controlled.Type: ApplicationFiled: October 18, 2011Publication date: March 1, 2012Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Minoru SAITO, Hiroyuki Maehara, Yoshimasa Sato
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Patent number: 8018097Abstract: A switching control system of circuit breaker, including at least: one switching control unit per circuit breaker, each of which inputs electrical quantity of power system voltage and main circuit current, state quantity of a circuit breaker, and an opening command signal or closing command signal of the circuit breaker, and performs control to cause the circuit breaker to open or close at a desired phase of the power system voltage or main circuit current; and a display operation unit connected with the switching control unit via a communication network and performs display operation to operate and monitor the operation and state of the switching control unit of circuit breaker. The switching control unit includes a first area for causing the circuit breaker to open or close at a desired phase of the power system voltage or current; and a second area for transmitting/receiving information via the communication network.Type: GrantFiled: October 2, 2007Date of Patent: September 13, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Minoru Saito, Hiroyuki Maehara, Shiro Maruyama
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Publication number: 20110211288Abstract: In some embodiments, a method is disclosed that includes measuring a waveform of a power source side voltage of a circuit breaker; measuring a waveform of a transmission line side voltage of the circuit breaker; calculating a waveform of a voltage between contacts of the circuit breaker that is a difference between the waveform of the power source side voltage and the waveform of the transmission line side voltage; calculating a waveform of an absolute value of the waveform of the voltage between contacts; extracting a waveform of a component in a frequency band which is lower than a frequency of the power source and higher than a frequency of a DC component from the waveform of the absolute value; detecting a cycle of the extracted waveform; and closing the circuit breaker based on the cycle.Type: ApplicationFiled: January 31, 2011Publication date: September 1, 2011Inventors: Tadashi Koshizuka, Minoru Saito, Hiroyuki Maehara, Yoshimasa Sato
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Patent number: 8008578Abstract: A multilayer insulated electric wire includes a conductor and three or more insulating layers covering the conductor. In the multilayer insulated electric wire, the outermost layer (A) of the insulating layers includes a coating layer formed of a resin composition of a polyamide resin containing copper iodide, and the innermost layer (B) of the insulating layers includes a coating layer formed of a resin composition of 100 parts by mass of a polyester-based resin (B1), all or a part of which is formed of an aliphatic alcohol component bonded with an acid component, and 5 to 40 parts by mass of an ethylene-based copolymer (B2) having side chains of a carboxylic acid or a metal salt of a carboxylic acid.Type: GrantFiled: March 29, 2007Date of Patent: August 30, 2011Assignee: Furukawa Electric Co., Ltd.Inventors: Minoru Saito, Hideo Fukuda, Makoto Onodera, Tsuneo Aoi
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Publication number: 20110204727Abstract: An overvoltage suppression device which suppresses overvoltage that occurs when breakers which turn on/off the connection between a power source bus and a power transmission line, are turned on after the breakers are turned off. The overvoltage suppression device measures the waveform of voltage on the side of the power source and the voltage on the side of the power transmission line, and extracts the waveform of a component in a predetermined frequency band on the basis of the waveform obtained by multiplying the wave shape of the voltage on the side of the power source by the waveform of the voltage on the side of the power transmission line. The breakers are turned on on the basis of a cycle wherein the waveform is peaked.Type: ApplicationFiled: March 1, 2010Publication date: August 25, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Koshizuka, Minoru Saito, Hiroshi Kusuyama, Hiroyuki Maehara, Yoshimasa Sato
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Publication number: 20110181989Abstract: Inrush current suppression apparatus for suppressing a transformer inrush current including a transformer side voltage measurement unit which measures a voltage at a side of a transformer, a residual magnetic flux calculation unit which calculates three line-to-line residual magnetic fluxes, a power supply side voltage measurement unit which measures a voltage at a side of a power supply, a stable-state magnetic flux calculation unit which calculates three line-to-line stable-state magnetic fluxes, based on the voltage at the side of the power supply, a phase determination unit which determines a phase in which phases of the three line-to-line stable-state magnetic fluxes are respectively the same in polarity as phases of the three line-to-line residual magnetic fluxes, and a closing unit which closes the circuit breaker in the phase determined by the phase determination unit.Type: ApplicationFiled: January 27, 2011Publication date: July 28, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Keisuke UDAGAWA, Tadashi KOSHIZUKA, Shiro MARUYAMA, Minoru SAITO, Noriyuki NAGAYAMA
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Publication number: 20110174520Abstract: Disclosed is an insulated electric wire having a conductor and one or more insulating layers covering the conductor, the insulated electric wire comprising a polyester-based resin composition which constitutes at least one layer of the insulating layers and comprises a polyester-based resin (A) containing a liquid crystal polymer in an amount of 5-25 parts by mass relative to 75-95 parts by mass of a polyester-based resin other than liquid crystal polymers.Type: ApplicationFiled: July 29, 2008Publication date: July 21, 2011Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Hideo Fukuda, Minoru Saito, Isao Tomomatsu, Tsuneo Aoi, Xiao Chuan Zhu
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Publication number: 20100254060Abstract: The system of the invention includes a circuit breaker switching control section (100) and a setting control section (700) connected therewith through a communication network (500). The circuit breaker switching control section (100) transmits a circuit breaker state quantity acquired by a signal input section (120) through the communication network to a set value calculation section (740) of the setting control section (700). The set value calculation section (740) of the setting control section calculates a set value to be set in the switching control section (100) of the circuit breaker, using the state quantity of the circuit breaker that was transmitted thereto. The setting control section (700) transmits to the circuit breaker switching control section the set value calculated by the set value calculation section (730) through the communication network.Type: ApplicationFiled: March 26, 2010Publication date: October 7, 2010Applicant: Kabushiki Kaisha ToshibaInventors: Minoru Saito, Hiroyuki Maehara, Osamu Hosokawa
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Publication number: 20100230133Abstract: A multilayer insulated electric wire includes a conductor and three or more insulating layers covering the conductor. In the multilayer insulated electric wire, the outermost layer (A) of the insulating layers includes a coating layer formed of a resin composition of a polyamide resin containing copper iodide, and the innermost layer (B) of the insulating layers includes a coating layer formed of a resin composition of 100 parts by mass of a polyester-based resin (B1), all or a part of which is formed of an aliphatic alcohol component bonded with an acid component, and 5 to 40 parts by mass of an ethylene-based copolymer (B2) having side chains of a carboxylic acid or a metal salt of a carboxylic acid.Type: ApplicationFiled: March 29, 2007Publication date: September 16, 2010Inventors: Minoru Saito, Hideo Fukuda, Makoto Onodera, Tsuneo Aoi
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Publication number: 20100200383Abstract: A switching controlgear of circuit breaker 100 outputs an opening command signal or closing command signal to the circuit breaker with the maximum being 1 cycle or less of wait time when the opening command signal or closing command signal is detected, and can cause the circuit breaker to open or to close at a desired phase of the main circuit current or power system voltage. The switching controlgear of circuit breaker 100 has switching control signal output time calculation means 10 and switching command signal output delay means 20. The switching control signal output time calculation means 10 calculates the switching control signal output time using the detection timing of the opening command signal or closing command signal as a reference so that the circuit breaker opens or closes at the desired phase after the total time of the switching control signal output time and the estimated opening operation time or estimated closing operation time of the circuit breaker 620 is elapsed.Type: ApplicationFiled: September 25, 2007Publication date: August 12, 2010Applicant: Kabushiki Kaisha ToshibaInventor: Minoru Saito
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Patent number: 7771819Abstract: A multilayer insulated wire has a conductor and two or more extrusion-insulating layers to cover the conductor, wherein at least one layer of the insulating layers other than an innermost layer is formed by a resin mixture containing a polyphenylene sulfide resin (A) as a continuous phase and an olefin-based copolymer ingredient (B) as a dispersed phase, or wherein at least one layer of the insulating layers other than an innermost layer is formed by a resin mixture containing a polyphenylene sulfide resin (A) as a continuous phase, and an olefin-based copolymer ingredient (B) and a polyamide (E) as a dispersed phase; a transformer is made by the multilayer insulated wire.Type: GrantFiled: May 3, 2006Date of Patent: August 10, 2010Assignee: The Furukawa Electric Co., Ltd.Inventors: Hideo Fukuda, Yong Hoon Kim, Noriyoshi Fushimi, Isamu Kobayashi, Minoru Saito, Makoto Onodera
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Publication number: 20100187916Abstract: The present invention provides a magnetic flux measuring device and magnetic flux measuring method for stationary induction electrical apparatus which can accurately measure the magnetic flux without being influenced by the DC offset component which superimposes on the measurement system, and can constantly and continuously measure the magnetic flux without setting a limit in the magnetic flux measurement period. The magnetic flux measuring method which measures a magnetic flux of a stationary induction electrical apparatus 2 using a voltage waveform of the stationary induction electrical apparatus 2, wherein the magnetic flux 151 of the stationary induction electrical apparatus 2 is determined by the steps of: inputting a voltage waveform 121 of the stationary induction electrical apparatus 2 into a negative-feedback amplification means 14 of which feedback circuit is constructed by a low pass filter; and integrating output of the negative-feedback amplification means 14 by integration means 15.Type: ApplicationFiled: October 12, 2007Publication date: July 29, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventor: Minoru Saito
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Publication number: 20100141050Abstract: A switching control system of circuit breaker is provided, which can easily connect with such an external equipment as a PC, both at the work site and remote side, without using dedicated software, and can implement efficient maintenance and data collection. The system comprises: one or more switching control units of circuit breaker 100 each of which inputs electrical quantity of power system voltage and main circuit current, state quantity of a circuit breaker, and an opening command signal or closing command signal of the circuit breaker, and performs control to cause the circuit breaker to open or close at a desired phase of the power system voltage or main circuit current; and a display operation unit 700, which is connected with the switching control unit of circuit breaker via a communication network 500 and performs display operation to operate and monitor the operation and state of the switching control unit of circuit breaker.Type: ApplicationFiled: October 2, 2007Publication date: June 10, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Minoru Saito, Hiroyuke Maehara, Shiro Maruyama
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Publication number: 20100141235Abstract: To suppress the magnetizing inrush current occurring when supplying power of three phases of the transformer are performed simultaneously using three single-phase circuit breakers or a non-phase segregated operation-type circuit breaker, without providing a circuit breaker with a resistor or other equipment. A magnetizing inrush current suppression method for transformer suppresses a magnetizing inrush current occurring at the start of energizing of a three-phase transformer 300, when a three-phase power supply 100 is input to a terminal of each phase by means of a three-phase circuit breaker 200.Type: ApplicationFiled: November 29, 2007Publication date: June 10, 2010Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Tadashi Koshiduka, Minoru Saito, Susumu Nishiwaki, Nobuyuki Takahashi, Koichi Futagami, Yoshimasa Sato, Tsuyoshi Kokumai, Hiroshi Kusuyama