Patents by Inventor Hiroaki Nakajima
Hiroaki Nakajima 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: 10603470Abstract: A medical safety needle is comprised of a needle body having a needlepoint, a covering body having a detent portion slidable on the needle body to catch the needlepoint so as to cover the needlepoint, and a resilient cantilever supporting the detent portion, a sleeve following the covering body to cover a side face of the needle body, a collar portion slidably fitting on the covering body, which is configured to get in contact with the cantilever to press the cantilever radially inwardly, and a housing being formed in a unitary body with the collar portion or having an end face on which the collar portion is capable of being seated, the housing being configured to carry the covering body from a first position to have the needlepoint exposed to a second position to have the needlepoint covered by the covering body.Type: GrantFiled: October 26, 2017Date of Patent: March 31, 2020Assignee: MEDIKIT CO., LTDInventors: Hiroaki Nakajima, Hirokazu Ando
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Patent number: 10452033Abstract: A process control system includes: a controller; at least one input and output module connected to the controller; and an allowable propagation delay value calculator in the controller, the allowable propagation delay value calculator being configured to calculate, based on the number of input and output modules connected to the controller, an allowable range for propagation delay time between the controller and the input and output module.Type: GrantFiled: November 23, 2016Date of Patent: October 22, 2019Assignee: Yokogawa Electric CorporationInventors: Hiroaki Nakajima, Noriko Kase, Kiyotaka Kozakai, Atsushi Terayama
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Publication number: 20190246331Abstract: A management apparatus (10) according to the present invention is a management apparatus for a communication system (100) configured to form redundant paths including an active path and a backup path while including a P2P (Point to Point) radio communication apparatus in the redundant paths. Further, the management apparatus (10) includes a communication unit (11) configured to receive a first transmission delay time of the active path and a plurality of second transmission delay times of a plurality of backup path candidates, and a setting unit (12) configured to select a backup path candidate from the plurality of backup path candidates based on differences between the plurality of second transmission delay times and the first transmission delay time, and set the selected backup path candidate as the backup path.Type: ApplicationFiled: July 11, 2017Publication date: August 8, 2019Applicant: NEC CorporationInventor: Hiroaki NAKAJIMA
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Patent number: 10316382Abstract: In the production of a non-oriented electrical stress sheet by hot rolling a steel slab containing, by mass %, C: not more than 0.005%, Si: not more than 8.0%, Mn: 0.03-3.0%, P: not more than 0.2%, S: not more than 0.005%, Al: not more than 3.0%, N: not more than 0.005%, Ni: not more than 3%, Cr: not more than 5%, Ti: not more than 0.005%, Nb: not more than 0.003%, As: not more than 0.005% and O: not more than 0.005%, subjecting to one cold rolling or two or more cold rollings interposing an intermediate annealing therebetween after conducting a hot band annealing or without conducting a hot band annealing and subjecting to a finish annealing, an average heating rate from 600° C. to 700° C. during the heating process in the finish annealing is set to not less than 50° C./sec.Type: GrantFiled: December 11, 2015Date of Patent: June 11, 2019Assignee: JFE STEEL CORPORATIONInventors: Tomoyuki Okubo, Kohei Kurihara, Yoshihiko Oda, Hiroaki Nakajima
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Publication number: 20190024205Abstract: Iron loss is reduced by increasing magnetic flux density. A non-oriented electrical steel sheet has a chemical composition containing, by mass %, C: 0.0050% or less, Si: 1.50% or more and 4.00% or less, Al: 0.500% or less, Mn: 0.10% or more and 5.00% or less, S: 0.0200% or less, P: 0.200% or less, N: 0.0050% or less, and O: 0.0200% or less, with the balance consisting of Fe and inevitable impurities, in which the steel sheet has an Ar3 transformation temperature of 700° C. or higher, a grain size of 80 ?m or more and 200 ?m or less, a Vickers hardness of 140 HV or more and 230 HV or less.Type: ApplicationFiled: August 25, 2016Publication date: January 24, 2019Applicant: JFE Steel CorporationInventors: Yoshihiko ODA, Tadashi NAKANISHI, Tomoyuki OKUBO, Yoshiaki ZAIZEN, Hiroaki NAKAJIMA
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Publication number: 20190017138Abstract: A steel containing C: not more than 0.0050%, Si: 0.1-5.0%, Mn: 0.02-3.0%, sol. Al: not more than 0.0050%, P: not more than 0.2%, S: not more than 0.0050%, N: not more than 0.0040%, T. Ca: 0.0010-0.0080%, T. O: not more than 0.0100% and having (T. Ca/T. O) of not less than 0.50 but not more than 2.0 by decarburizing to a C content of not more than 0.0050%, adding Si, decreasing Al as much as possible, and adding Ca is melted to form a slab. The slab is subjected to a hot rolling at a coiling temperature of not lower than 550° C., a cold rolling and a finish annealing, or the slab is subjected to a hot rolling, a hot band annealing at a temperature of 900-1150° C., a cold rolling and a finish annealing to thereby produce a non-oriented electrical steel sheet.Type: ApplicationFiled: January 13, 2017Publication date: January 17, 2019Inventors: Masanori Uesaka, Tadashi Nakanishi, Seiji Nabeshima, Tomoyuki Okubo, Yoshihiko Oda, Hiroaki Nakajima
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Publication number: 20180340239Abstract: A high-silicon steel sheet is excellent in terms of punching workability and magnetic property. The high-silicon steel sheet has a chemical composition containing, by mass %, C: 0.02% or less, P: 0.02% or less, Si: 4.5% or more and 7.0% or less, Mn: 0.01% or more and 1.0% or less, Al: 1.0% or less, O: 0.01% or less, N: 0.01% or less, and the balance being Fe and inevitable impurities, a grain-boundary oxygen concentration (oxygen concentration with respect to chemical elements segregated at grain boundaries) of 30 at % or less, and a microstructure in which a degree of integration P(211) of a {211}-plane of ?-Fe on a surface of the steel sheet is 15% or more P(211)=p(211)/S×100(%), wherein S=p(110)/100+p(200)/14.93+p(211)/25.88+p(310)/7.68+p(222)/1.59+p(321)/6.27+p(411)/1.55, and p(hkl): integrated intensity of a peak of X-ray diffraction of an {hkl}-plane.Type: ApplicationFiled: September 8, 2016Publication date: November 29, 2018Applicant: JFE Steel CorporationInventors: Tomoyuki Okubo, Tatsuhiko Hiratani, Yoshihiko Oda, Hiroaki Nakajima
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Publication number: 20180230564Abstract: Methods for producing non-oriented electrical steel sheets comprising steps including hot rolling a slab having a chemical composition comprising C: not more than 0.01 mass %, Si: not more than 6 mass %, Mn: 0.05-3 mass %, P: not more than 0.2 mass %, Al: not more than 2 mass %, N: not more than 0.005 mass %, S: not more than 0.01 mass %, Ga: not more than 0.0005 mass %, and the remainder being Fe and inevitable impurities, pickling without conducting hot band annealing or after conducting hot band annealing or self-annealing, subjecting to one or more cold rollings including an intermediate annealing therebetween and a finish annealing, and forming an insulation coating, an average heating rate from 500 to 800° C. in the heating process of the finish annealing is not less than 50° C./s, whereby a non-oriented electrical steel sheet having excellent magnetic properties is obtained even if hot band annealing is omitted.Type: ApplicationFiled: June 27, 2016Publication date: August 16, 2018Applicant: JFE STEEL CORPPORATIONInventors: Hiroaki Nakajima, Tomoyuki Okubo, Tadashi Nakanishi, Yoshihiko Oda
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Publication number: 20180202021Abstract: Iron loss is reduced by increasing magnetic flux density. A non-oriented electrical steel sheet has a chemical composition containing, by mass %, C: 0.0050% or less, Si: 1.50% or more and 4.00% or less, Al: 0.500% or less, Mn: 0.10% or more and 5.00% or less, S: 0.0200% or less, P: 0.200% or less, N: 0.0050% or less, and O: 0.0200% or less, with the balance consisting of Fe and inevitable impurities, in which the steel sheet has an Ar3 transformation temperature of 700° C. or higher, a grain size of 80 ?m or more and 200 ?m or less, a Vickers hardness of 140 HV or more and 230 HV or less.Type: ApplicationFiled: August 25, 2016Publication date: July 19, 2018Applicant: JFE Steel CorporationInventors: Yoshihiko ODA, Tadashi NAKANISHI, Tomoyuki OKUBO, Yoshiaki ZAIZEN, Hiroaki NAKAJIMA
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Publication number: 20180066333Abstract: In the production of a non-oriented electrical stress sheet by hot rolling a slab having a chemical composition comprising, by mass %, C: not more than 0.005, Si: 1.5-6.0, Mn: 0.05-2.0 and P: 0.03-0.15, subjecting to a hot band annealing, if necessary, cold rolling, finish annealing, and forming an insulation coating, the cooling from 700° C. to 500° C. in the finish annealing is conducted in an oxidizing atmosphere with an oxygen potential PH2O/PH2of not less than 0.001 for 1-300 seconds, whereby P is segregated into the surface of the steel sheet after the finish annealing to obtain a non-oriented electrical steel sheet enhancing a crystal grain growth properties in the stress relief annealing.Type: ApplicationFiled: January 7, 2016Publication date: March 8, 2018Applicant: JFE STEEL CORPORATIONInventors: Hiroaki Nakajima, Tomoyuki Okubo, Tadashi Nakanishi, Yoshihiko Oda
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Publication number: 20180043137Abstract: A medical safety needle is comprised of a needle body having a needlepoint, a covering body having a detent portion slidable on the needle body to catch the needlepoint so as to cover the needlepoint, and a resilient cantilever supporting the detent portion, a sleeve following the covering body to cover a side face of the needle body, a collar portion slidably fitting on the covering body, which is configured to get in contact with the cantilever to press the cantilever radially inwardly, and a housing being formed in a unitary body with the collar portion or having an end face on which the collar portion is capable of being seated, the housing being configured to carry the covering body from a first position to have the needlepoint exposed to a second position to have the needlepoint covered by the covering body.Type: ApplicationFiled: October 26, 2017Publication date: February 15, 2018Applicant: MEDIKIT CO., LTDInventors: Hiroaki NAKAJIMA, Hirokazu ANDO
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Publication number: 20180030558Abstract: In the production of a non-oriented electrical stress sheet by hot rolling a steel slab containing, by mass %, C: not more than 0.005%, Si: not more than 8.0%, Mn: 0.03-3.0%, P: not more than 0.2%, S: not more than 0.005%, Al: not more than 3.0%, N: not more than 0.005%, Ni: not more than 3%, Cr: not more than 5%, Ti: not more than 0.005%, Nb: not more than 0.003%, As: not more than 0.005% and O: not more than 0.005%, subjecting to one cold rolling or two or more cold rollings interposing an intermediate annealing therebetween after conducting a hot band annealing or without conducting a hot band annealing and subjecting to a finish annealing, an average heating rate from 600° C. to 700° C. during the heating process in the finish annealing is set to not less than 50° C./sec.Type: ApplicationFiled: December 11, 2015Publication date: February 1, 2018Applicant: JFE STEEL CORPORATIONInventors: Tomoyuki OKUBO, Kohei KURIHARA, Yoshihiko ODA, Hiroaki NAKAJIMA
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Patent number: 9869987Abstract: A process control system includes an I/O module configured to be connected to a field device which is installed in a plant in which an industrial process is controlled, the I/O module autonomously transmitting data received from the field device, and a higher-level device that comprises a memory which temporarily stores the data autonomously transmitted from the I/O module, the higher-level device reading the data stored in the memory at a predetermined period.Type: GrantFiled: March 23, 2015Date of Patent: January 16, 2018Assignee: Yokogawa Electric CorporationInventors: Hiroaki Nakajima, Kuniharu Akabane, Shunsuke Hayashi
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Publication number: 20180002789Abstract: When a non-oriented electrical steel sheet is produced by hot rolling a slab containing, by mass %, C: not more than 0.0050%, Si: 1.5-5.0%, Mn: 0.20-3.0%, sol. Al: not more than 0.0050%, P: not more than 0.2%, S: not more than 0.0050% and N: not more than 0.0040% to form a hot rolled sheet, cold rolling the hot rolled sheet without conducting a hot band annealing and then subjecting to a finish annealing, a compositional ratio of CaO in oxide-based inclusions existing in the slab defined by CaO/(SiO2+Al2O3+CaO) is set to not less than 0.4 and/or a compositional ratio of Al2O3 defined by Al2O3/(SiO2+Al2O3+CaO) is set to not less than 0.3, and a coiling temperature in the hot rolling is set to not lower than 650° C.Type: ApplicationFiled: November 17, 2015Publication date: January 4, 2018Applicant: JFE STEEL CORPORATIONInventors: Tadashi Nakanishi, Hiroaki Nakajima, Tomoyuki Okubo, Yoshihiko Oda
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Patent number: 9844648Abstract: A medical safety needle includes a needle body having a needlepoint, a covering body having a detent portion slidable on the needle body to catch the needlepoint so as to cover the needlepoint, and a resilient cantilever supporting the detent portion, a collar portion slidably fitting on the covering body, which is configured to get in contact with the cantilever to press the cantilever radially inwardly, and a housing being formed in a unitary body with the collar portion or having an end face on which the collar portion is capable of being seated, the housing being configured to carry the covering body from a first position to have the needlepoint exposed to a second position to have the needlepoint covered by the covering body.Type: GrantFiled: March 30, 2015Date of Patent: December 19, 2017Assignee: MEDIKIT CO., LTDInventors: Hiroaki Nakajima, Hirokazu Ando
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Publication number: 20170274432Abstract: A non-oriented electrical steel sheet with lower iron loss than conventional non-oriented electrical steel sheets is provided. The non-oriented electrical steel sheet has a chemical composition containing, in mass %: C: 0.05% or less; Si: 0.1% or more and 7.0% or less; Al: 0.1% or more and 3.0% or less; Mn: 0.03% or more and 3.0% or less; P: 0.2% or less; S: 0.005% or less; N: 0.005% or less; and O: 0.01% or less, and further optionally containing a predetermined amount of one or more of Sn, Sb, Ca, Mg, REM, Cr, Ti, Nb, V, and Zr, with the balance consisting of Fe and incidental impurities, wherein a sheet thickness is less than 0.30 mm, and arithmetic mean roughness Ra of a steel substrate surface at cutoff wavelength ?c=20 ?m is 0.2 ?m or less.Type: ApplicationFiled: August 18, 2015Publication date: September 28, 2017Applicant: JFE STEEL CORPORATIONInventors: Tomoyuki Okubo, Yoshihiko Oda, Hiroaki Nakajima
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Publication number: 20170241002Abstract: A non-oriented electrical steel sheet has excellent magnetic properties and a chemical composition including C: not more than 0.01 mass %, Si: not more than 6 mass %, Mn: 0.05-3 mass %, P: not more than 0.2 mass %, Al: not more than 2 mass % but preferably not more than 0.005 mass %, N: not more than 0.005 mass %, S: not more than 0.01 mass %, Ga: not more than 0.0005 mass % even if hot band annealing is omitted.Type: ApplicationFiled: June 24, 2015Publication date: August 24, 2017Inventors: Hiroaki Nakajima, Tomoyuki Okubo, Tadashi Nakanishi, Yoshihiko Oda
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Publication number: 20170211161Abstract: A non-oriented electrical steel sheet with excellent recyclability whose magnetic property is prevented from becoming unstable in the case of reducing the Al content in order to reuse the non-oriented electrical steel sheet as iron scrap is provided. The non-oriented electrical steel sheet has a chemical composition containing, in mass %: C: 0.0050% or less; Si: 1.0% or more and 4.0% or less; Mn: 0.10% or more and 3.0% or less; Sol. Al: less than 0.0050%; P: more than 0.01% and 0.20% or less; S: 0.0050% or less; N: 0.0050% or less; Cu: 0.02% or more and less than 0.10%; and Ca: 0.0005% or more and 0.0100% or less, with a balance being Fe and incidental impurities.Type: ApplicationFiled: August 13, 2015Publication date: July 27, 2017Applicant: JFE STEEL CORPORATIONInventors: Tadashi NAKANISHI, Hiroaki NAKAJIMA, Tomoyuki OKUBO, Yoshihiko ODA
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Publication number: 20170185055Abstract: A process control system includes: a controller; at least one input and output module connected to the controller; and an allowable propagation delay value calculator in the controller, the allowable propagation delay value calculator being configured to calculate, based on the number of input and output modules connected to the controller, an allowable range for propagation delay time between the controller and the input and output module.Type: ApplicationFiled: November 23, 2016Publication date: June 29, 2017Applicant: YOKOGAWA ELECTRIC CORPORATIONInventors: Hiroaki NAKAJIMA, Noriko KASE, Kiyotaka KOZAKAI, Atsushi TERAYAMA
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Patent number: 9379833Abstract: A transmitter is connected to a master device, and wirelessly transmits a timing packet, which is transmitted from the master device, to a receiver. The transmitter includes: an input unit for receiving an input of a timing packet from the master device; a delay compensation unit for obtaining a packet length of the timing packet and a modulation system used for radio transmission, calculating a device-specific delay value and a first propagation delay value based on the modulation system and the packet length, and calculating a delay compensation value based on the device-specific delay value and the first propagation delay value; a filter unit for adding the delay compensation value to a specific field of the timing packet; and an output unit for outputting the timing packet to the receiver.Type: GrantFiled: August 1, 2012Date of Patent: June 28, 2016Assignee: NEC CorporationInventor: Hiroaki Nakajima