Patents by Inventor Kazuhisa Fujita
Kazuhisa Fujita 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: 20240091842Abstract: A plated steel sheet for hot stamping according to one aspect of the present invention includes a steel sheet, a plating layer formed on either surface or both surfaces of the steel sheet and having an Al content of 60 mass % or more, and a surface film layer formed on the plating layer. A thickness t of the plating layer is 10 to 60 ?m. An average crystal grain diameter of the plating layer in a thickness range from an interface between the plating layer and the surface film layer to a position at ? of the thickness t is 2t/3 or less and 15.0 ?m or less. A surface film layer contains particles containing one or more elements selected from A group elements consisting of Sc, V, Mn, Fe, Co, Ce, Nb, Mo, and W. A total content of the A group elements is 0.01 to 10.0 g/m2. An average grain diameter of the particles containing the A group elements is 0.05 to 3.0 ?m.Type: ApplicationFiled: November 29, 2019Publication date: March 21, 2024Applicant: NIPPON STEEL CORPORATIONInventors: Yuki SUZUKI, Soshi FUJITA, Jun MAKI, Kazuhisa KUSUMI, Masahiro FUDA
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Publication number: 20230375291Abstract: The present invention provides a technique for improving the cooling performance of a cooling tower in a circulating cooling water system having the cooling tower. The present invention provides a method for improving cooling performance of a cooling tower in a circulating cooling water system having the cooling tower, wherein cooling water used in the circulating cooling water system is cooling water to which an agent including a surfactant is added, and the cooling water satisfies (a) a dynamic contact angle of 55° or less and (b) a bubble bulkiness of 250 mL or less.Type: ApplicationFiled: October 6, 2021Publication date: November 23, 2023Applicant: KURITA WATER INDUSTRIES LTD.Inventors: Takanori YOSHINO, Takashi KIKKAWA, Kazuhisa FUJITA, Natsumi TANIYAMA, Marina YANAGIDA
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Publication number: 20230150065Abstract: Disclosed is a way of providing a surface processing method for concrete in which vitrifying is suppressed even when high-speed processing is performed. In a surface processing method of concrete, a surface of the concrete is irradiated with a laser beam so that a beam spot is scanned along a predetermined scanning pattern and the scanning pattern moves along the surface at a predetermined feed speed. When the beam spot repeatedly passes through a predetermined portion in the scanning pattern, an overlap ratio, which is a ratio of overlapping of a passage path of the beam spot over a passage path of the beam spot in an immediately preceding irradiation, is 90% or less.Type: ApplicationFiled: March 26, 2021Publication date: May 18, 2023Inventors: Yuji SHIRANE, Takehiro MISAKA, Kenji MARUYAMA, Takayuki OBARA, Kenjiro MOMI, Kazuhisa FUJITA, Takahiro UTSUGITA, Manabu HARAGUCHI
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Publication number: 20230019043Abstract: Disclosed is a laser irradiation state diagnosing method which allows accurately diagnosing a laser irradiation state. When irradiating a laser beam so that an irradiation spot scans the surface of the irradiation object, acoustic information in vicinity of the irradiation spot is acquired. And based on characteristics of the acoustic information, such as an intensity of a component of a specific frequency band or a frequency band distribution, a state of peeling of the adhered substances existing on the surface of the irradiation object is determined.Type: ApplicationFiled: November 26, 2020Publication date: January 19, 2023Inventors: Kenjiro MOMI, Kazuhisa FUJITA, Manabu HARAGUCHI, Daisuke MORI, Momo TOSUE
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Publication number: 20210394308Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.Type: ApplicationFiled: September 1, 2021Publication date: December 23, 2021Applicant: TOYOKOH Co., Ltd.Inventors: Hiroyasu TOYOSAWA, Kazuaki TOYOSAWA, Kazuhisa FUJITA, Shinichiro OKIHARA
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Patent number: 11135681Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.Type: GrantFiled: December 1, 2017Date of Patent: October 5, 2021Assignee: TOYOKOH, Co., Ltd.Inventors: Hiroyasu Toyosawa, Kazuaki Toyosawa, Kazuhisa Fujita, Shinichiro Okihara
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Patent number: 11130694Abstract: Water discharged from a circulating cooling water system is treated by a water recovery system including a clarification equipment and an RO membrane, and treated water is returned to the circulating cooling water system. A dispersant is added to the circulating cooling water system for dispersing scale components. The dispersant includes a polymer having a carboxyl group and having a weight average molecular weight of 5,000 or less, and permeates through the clarification equipment. The polymer having a carboxyl group and having a weight average molecular weight of 5,000 or less permeates through the clarification equipment, and performs as a scale dispersing agent for the RO membrane, preventing precipitation of scale. Since the polymer intrinsically has an anticorrosion effect, it becomes unnecessary to add a phosphoric acid compound to the cooling water system as an anticorrosion agent, or the required amount of the compound to be added can be reduced.Type: GrantFiled: June 29, 2016Date of Patent: September 28, 2021Assignee: KURITA WATER INDUSTRIES LTD.Inventors: Kunihiro Hayakawa, Kazuhisa Fujita
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Patent number: 10464167Abstract: This is to provide a laser irradiation apparatus which can drive a deflection optical system (33) with a high speed by a small and lightweight structure and can cope with heat generation of the optical system. The laser irradiation apparatus includes a condensing optical system (32) for condensing a laser beam (B) generated by a laser oscillator (10) at a predetermined focal point (FP), a deflection optical system (33) for deflecting the laser beam (B) generated from the condensing optical system (32) with a predetermined deflection angle, and a driving unit (100) for rotationally driving the deflection optical system (33) around a rotation axis provided substantially in parallel to an optical axis of the condensing optical system (32), wherein the driving unit (100) has an air motor (100) which convert an energy possessed by a gas supplied from a gas supplying source (60) to a rotational force.Type: GrantFiled: July 13, 2015Date of Patent: November 5, 2019Assignee: TOYOKOH CO., LTD.Inventors: Kazuaki Toyosawa, Akihiro Kuroyanagi, Kazuhisa Fujita, Shinichiro Okihara
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Patent number: 10049049Abstract: A disclosed information processing method is executed in a distributed processing system that processes data by plural information processing apparatuses. And the information processing method includes: obtaining, by a first information processing apparatus of the plural information processing apparatuses and from a second information processing apparatus that manages relations among data, identification information of first data that has a predetermined relation with second data and identification information of an information processing apparatus that manages the first data, upon detecting access to the second data managed by the first information processing apparatus; reading out, by the first information processing apparatus, the first data, upon determining that the information processing apparatus that manages the first data corresponds to the first information processing apparatus; and loading, by the first information processing apparatus, the first data into a cache.Type: GrantFiled: September 21, 2015Date of Patent: August 14, 2018Assignee: FUJITSU LIMITEDInventors: Yasuo Koike, Kazuhisa Fujita, Toshiyuki Maeda, Tadahiro Miyaji, Tomonori Furuta, Fumiaki Itou
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Publication number: 20180194659Abstract: Water discharged from a circulating cooling water system is treated by a water recovery system including a clarification equipment and an RO membrane, and treated water is returned to the circulating cooling water system. A dispersant is added to the circulating cooling water system for dispersing scale components. The dispersant includes a polymer having a carboxyl group and having a weight average molecular weight of 5,000 or less, and permeates through the clarification equipment. The polymer having a carboxyl group and having a weight average molecular weight of 5,000 or less permeates through the clarification equipment, and performs as a scale dispersing agent for the RO membrane, preventing precipitation of scale. Since the polymer intrinsically has an anticorrosion effect, it becomes unnecessary to add a phosphoric acid compound to the cooling water system as an anticorrosion agent, or the required amount of the compound to be added can be reduced.Type: ApplicationFiled: June 29, 2016Publication date: July 12, 2018Applicant: Kurita Water Industries Ltd.Inventors: Kunihiro HAYAKAWA, Kazuhisa FUJITA
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Publication number: 20180085858Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.Type: ApplicationFiled: December 1, 2017Publication date: March 29, 2018Applicant: TOYOKOH Co., Ltd.Inventors: Hiroyasu TOYOSAWA, Kazuaki TOYOSAWA, Kazuhisa FUJITA, Shinichiro OKIHARA
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Patent number: 9868179Abstract: In order to provide a laser irradiation system, a method for removing a coating, and a laser irradiation apparatus capable of efficiently removing a coating on a surface of a structure and recovering the removed substance using suction, a laser head (3) is configured from an optical system (4) for irradiating laser beam (30), a suctioning means (33) for suctioning removed matter (60) produced at the point where the laser beam (30) is directed, and an attachment (5) configured to be capable of abutting a surface (20) of a structure, the optical system (4) being operated to scan the irradiation point of the laser beam so as to draw a trajectory of a circle having a radius r1 around the optical axis of the laser beam (30) on a surface substantially perpendicular to the optical axis.Type: GrantFiled: March 8, 2013Date of Patent: January 16, 2018Assignee: TOYOKOH, Co., Ltd.Inventors: Hiroyasu Toyosawa, Kazuaki Toyosawa, Kazuhisa Fujita, Shinichiro Okihara
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Patent number: 9805829Abstract: A target shell monitoring device 4 that monitors an attitude and a position of the target shell Tg1, a compression laser output device 5a that irradiates the target shell Tg1 with a compression laser light LS1, and a heating laser output device 6 that irradiates the target shell Tg1 with a heating laser light LS3 following the compression laser light LS1 are provided. The target shell Tg1 has a hollow spherical shell shape, includes an approximately spherical space Sp on an inner side thereof, includes at least one through hole H1 connecting an outer side thereof and the space Sp, and includes, on an outer surface Sf1 thereof, irradiation areas Ar1 and Ar2 to be irradiated with compression laser lights.Type: GrantFiled: October 10, 2013Date of Patent: October 31, 2017Assignees: HAMAMATSU PHOTONICS K.K., TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Sekine, Takashi Kurita, Toshiyuki Kawashima, Nakahiro Satoh, Hirofumi Kan, Yoneyoshi Kitagawa, Yoshitaka Mori, Katsuhiro Ishii, Kazuhisa Fujita, Ryohei Hanayama, Shinichiro Okihara, Atsushi Sunahara, Osamu Komeda, Naoki Nakamura, Yasuhiko Nishimura, Hirozumi Azuma
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Publication number: 20170252862Abstract: This is to provide a laser irradiation apparatus which can drive a deflection optical system (33) with a high speed by a small and lightweight structure and can cope with heat generation of the optical system. The laser irradiation apparatus includes a condensing optical system (32) for condensing a laser beam (B) generated by a laser oscillator (10) at a predetermined focal point (FP), a deflection optical system (33) for deflecting the laser beam (B) generated from the condensing optical system (32) with a predetermined deflection angle, and a driving unit (100) for rotationally driving the deflection optical system (33) around a rotation axis provided substantially in parallel to an optical axis of the condensing optical system (32), wherein the driving unit (100) has an air motor (100) which convert an energy possessed by a gas supplied from a gas supplying source (60) to a rotational force.Type: ApplicationFiled: July 13, 2015Publication date: September 7, 2017Inventors: Kazuaki TOYOSAWA, Akihiro KUROYANAGI, Kazuhisa FUJITA, Shinichiro OKIHARA
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Patent number: 9612928Abstract: When an update instruction for updating task data stored in a memory is transmitted through a transaction process performed by an application server, an active node apparatus generates, based on the update instruction, an update log indicating update contents of the task data stored in the memory, and then distributes, in a multicast manner, the generated update log to other standby node apparatuses each with a memory. With this, mirroring among the plurality of memories is controlled.Type: GrantFiled: August 27, 2012Date of Patent: April 4, 2017Assignee: FUJITSU LIMITEDInventors: Kazuhisa Fujita, Kazuya Uesugi
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Patent number: 9483523Abstract: An information processing apparatus includes a receiving unit that receives an access request for data from one of a plurality of information processing apparatuses in a distributed processing system in which the information processing apparatuses execute a process in a distributed manner, a query issuing unit that issues, when the access request for the data is received by the receiving unit, a query to each of the information processing apparatuses as to whether the data is stored in a page cache managed by an operating system on each of the information processing apparatuses, and a responding unit that makes a response to the access request, the response specifying, as an access destination, an information processing apparatus that has responded to the query issued by the query issuing unit.Type: GrantFiled: January 14, 2013Date of Patent: November 1, 2016Assignee: FUJITSU LIMITEDInventors: Akira Ochi, Yasuo Koike, Toshiyuki Maeda, Tomonori Furuta, Fumiaki Itou, Tadahiro Miyaji, Kazuhisa Fujita
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Patent number: 9460150Abstract: An information processing apparatus includes a receiving unit that receives an access request for data from one of a plurality of information processing apparatuses in a distributed processing system in which the information processing apparatuses execute a process in a distributed manner, a query issuing unit that issues, when the access request for the data is received by the receiving unit, a query to each of the information processing apparatuses as to whether the data is stored in a page cache managed by an operating system on each of the information processing apparatuses, and a responding unit that makes a response to the access request, the response specifying, as an access destination, an information processing apparatus that has responded to the query issued by the query issuing unit.Type: GrantFiled: January 14, 2013Date of Patent: October 4, 2016Assignee: FUJITSU LIMITEDInventors: Akira Ochi, Yasuo Koike, Toshiyuki Maeda, Tomonori Furuta, Fumiaki Itou, Tadahiro Miyaji, Kazuhisa Fujita
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Publication number: 20160179432Abstract: Each of a plurality of, as many as three or more, processes is executed by one of a first virtual machine and a second virtual machine, and each of the first and second virtual machines executes at least one of the processes. At the execution of each of the processes, a virtual memory unit corresponding to the process is referred to. Based on ranks each assigned in advance to one of the processes, a processor changes an assignment destination of a physical memory area currently assigned to each of virtual memory units, except for a virtual memory unit corresponding to a last-rank process, to a virtual memory unit corresponding to a next-rank process following a process corresponding to a virtual memory unit to which the physical memory area is currently assigned.Type: ApplicationFiled: November 4, 2015Publication date: June 23, 2016Applicant: FUJITSU LIMITEDInventors: Hideyuki Niwa, Yasuo Koike, Kazuhisa Fujita, TOSHIYUKI MAEDA, Tadahiro Miyaji, Tomonori Furuta, Fumiaki ITOU, Isao Nunoichi
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Patent number: 9319245Abstract: An information processing device having any of hash values associated with a hash space based on distribution hash information. The device acquires access information to an information processing device as a target, the access information being transmitted from another information processing device on the basis of first distribution hash information using the hash value in the hash space between first devices belonging to one of groups divided according to a sequence in terms of the magnitudes of the hash values associated with the hash space, stores second distribution hash information using the hash value in the hash space pertaining to a second device belonging to the group to which the first device belongs, searches second distribution hash information for a second device corresponding to the hash value generated from the access information, and transmits access information to the retrieved second device by the searching.Type: GrantFiled: December 13, 2013Date of Patent: April 19, 2016Assignee: FUJITSU LIMITEDInventors: Yasuo Koike, Kazuhisa Fujita, Toshiyuki Maeda, Akira Ochi
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Publication number: 20160011980Abstract: A disclosed information processing method is executed in a distributed processing system that processes data by plural information processing apparatuses. And the information processing method includes: obtaining, by a first information processing apparatus of the plural information processing apparatuses and from a second information processing apparatus that manages relations among data, identification information of first data that has a predetermined relation with second data and identification information of an information processing apparatus that manages the first data, upon detecting access to the second data managed by the first information processing apparatus; reading out, by the first information processing apparatus, the first data, upon determining that the information processing apparatus that manages the first data corresponds to the first information processing apparatus; and loading, by the first information processing apparatus, the first data into a cache.Type: ApplicationFiled: September 21, 2015Publication date: January 14, 2016Applicant: FUJITSU LIMITEDInventors: Yasuo KOIKE, Kazuhisa FUJITA, Toshiyuki MAEDA, Tadahiro MIYAJI, Tomonori FURUTA, Fumiaki ITOU