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).

  • Publication number: 20240091842
    Abstract: 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: Application
    Filed: November 29, 2019
    Publication date: March 21, 2024
    Applicant: NIPPON STEEL CORPORATION
    Inventors: Yuki SUZUKI, Soshi FUJITA, Jun MAKI, Kazuhisa KUSUMI, Masahiro FUDA
  • Publication number: 20230375291
    Abstract: 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: Application
    Filed: October 6, 2021
    Publication date: November 23, 2023
    Applicant: KURITA WATER INDUSTRIES LTD.
    Inventors: Takanori YOSHINO, Takashi KIKKAWA, Kazuhisa FUJITA, Natsumi TANIYAMA, Marina YANAGIDA
  • Publication number: 20230150065
    Abstract: 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: Application
    Filed: March 26, 2021
    Publication date: May 18, 2023
    Inventors: Yuji SHIRANE, Takehiro MISAKA, Kenji MARUYAMA, Takayuki OBARA, Kenjiro MOMI, Kazuhisa FUJITA, Takahiro UTSUGITA, Manabu HARAGUCHI
  • Publication number: 20230019043
    Abstract: 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: Application
    Filed: November 26, 2020
    Publication date: January 19, 2023
    Inventors: Kenjiro MOMI, Kazuhisa FUJITA, Manabu HARAGUCHI, Daisuke MORI, Momo TOSUE
  • Publication number: 20210394308
    Abstract: 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: Application
    Filed: September 1, 2021
    Publication date: December 23, 2021
    Applicant: TOYOKOH Co., Ltd.
    Inventors: Hiroyasu TOYOSAWA, Kazuaki TOYOSAWA, Kazuhisa FUJITA, Shinichiro OKIHARA
  • Patent number: 11135681
    Abstract: 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: Grant
    Filed: December 1, 2017
    Date of Patent: October 5, 2021
    Assignee: TOYOKOH, Co., Ltd.
    Inventors: Hiroyasu Toyosawa, Kazuaki Toyosawa, Kazuhisa Fujita, Shinichiro Okihara
  • Patent number: 11130694
    Abstract: 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: Grant
    Filed: June 29, 2016
    Date of Patent: September 28, 2021
    Assignee: KURITA WATER INDUSTRIES LTD.
    Inventors: Kunihiro Hayakawa, Kazuhisa Fujita
  • Patent number: 10464167
    Abstract: 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: Grant
    Filed: July 13, 2015
    Date of Patent: November 5, 2019
    Assignee: TOYOKOH CO., LTD.
    Inventors: Kazuaki Toyosawa, Akihiro Kuroyanagi, Kazuhisa Fujita, Shinichiro Okihara
  • Patent number: 10049049
    Abstract: 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: Grant
    Filed: September 21, 2015
    Date of Patent: August 14, 2018
    Assignee: FUJITSU LIMITED
    Inventors: Yasuo Koike, Kazuhisa Fujita, Toshiyuki Maeda, Tadahiro Miyaji, Tomonori Furuta, Fumiaki Itou
  • Publication number: 20180194659
    Abstract: 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: Application
    Filed: June 29, 2016
    Publication date: July 12, 2018
    Applicant: Kurita Water Industries Ltd.
    Inventors: Kunihiro HAYAKAWA, Kazuhisa FUJITA
  • Publication number: 20180085858
    Abstract: 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: Application
    Filed: December 1, 2017
    Publication date: March 29, 2018
    Applicant: TOYOKOH Co., Ltd.
    Inventors: Hiroyasu TOYOSAWA, Kazuaki TOYOSAWA, Kazuhisa FUJITA, Shinichiro OKIHARA
  • Patent number: 9868179
    Abstract: 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: Grant
    Filed: March 8, 2013
    Date of Patent: January 16, 2018
    Assignee: TOYOKOH, Co., Ltd.
    Inventors: Hiroyasu Toyosawa, Kazuaki Toyosawa, Kazuhisa Fujita, Shinichiro Okihara
  • Patent number: 9805829
    Abstract: 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: Grant
    Filed: October 10, 2013
    Date of Patent: October 31, 2017
    Assignees: HAMAMATSU PHOTONICS K.K., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: 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
  • Publication number: 20170252862
    Abstract: 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: Application
    Filed: July 13, 2015
    Publication date: September 7, 2017
    Inventors: Kazuaki TOYOSAWA, Akihiro KUROYANAGI, Kazuhisa FUJITA, Shinichiro OKIHARA
  • Patent number: 9612928
    Abstract: 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: Grant
    Filed: August 27, 2012
    Date of Patent: April 4, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Kazuhisa Fujita, Kazuya Uesugi
  • Patent number: 9483523
    Abstract: 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: Grant
    Filed: January 14, 2013
    Date of Patent: November 1, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Akira Ochi, Yasuo Koike, Toshiyuki Maeda, Tomonori Furuta, Fumiaki Itou, Tadahiro Miyaji, Kazuhisa Fujita
  • Patent number: 9460150
    Abstract: 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: Grant
    Filed: January 14, 2013
    Date of Patent: October 4, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Akira Ochi, Yasuo Koike, Toshiyuki Maeda, Tomonori Furuta, Fumiaki Itou, Tadahiro Miyaji, Kazuhisa Fujita
  • Publication number: 20160179432
    Abstract: 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: Application
    Filed: November 4, 2015
    Publication date: June 23, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Hideyuki Niwa, Yasuo Koike, Kazuhisa Fujita, TOSHIYUKI MAEDA, Tadahiro Miyaji, Tomonori Furuta, Fumiaki ITOU, Isao Nunoichi
  • Patent number: 9319245
    Abstract: 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: Grant
    Filed: December 13, 2013
    Date of Patent: April 19, 2016
    Assignee: FUJITSU LIMITED
    Inventors: Yasuo Koike, Kazuhisa Fujita, Toshiyuki Maeda, Akira Ochi
  • Publication number: 20160011980
    Abstract: 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: Application
    Filed: September 21, 2015
    Publication date: January 14, 2016
    Applicant: FUJITSU LIMITED
    Inventors: Yasuo KOIKE, Kazuhisa FUJITA, Toshiyuki MAEDA, Tadahiro MIYAJI, Tomonori FURUTA, Fumiaki ITOU