Patents by Inventor Mitsuo Ishikawa
Mitsuo Ishikawa 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: 10718734Abstract: A method of determining an enhancement in rust-prevention of treated water by applying an electric current between a first cathode electrode and an anode electrode, and between a second cathode electrode and the anode electrode, wherein the first cathode electrode, the second cathode electrode, and the anode electrode are immersed in treated water; applying a comparative electric current between a first comparative cathode electrode and a comparative anode electrode, and between a second comparative cathode electrode and the comparative anode electrode, wherein the first comparative cathode electrode, the second comparative cathode electrode, and the at least one comparative anode electrode are immersed in untreated water; and determining an antirust effect of the treated water based on a first potential difference across the first cathode electrode and the second cathode electrode, and a second potential difference across the first comparative cathode electrode and the second comparative cathode electrode.Type: GrantFiled: November 10, 2017Date of Patent: July 21, 2020Assignee: Toshikogyo Co., Ltd.Inventors: Yasuo Tajiri, Mitsuo Ishikawa, Kunio Nemoto, Nobuyuki Kamiya
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Patent number: 10175189Abstract: A determination device for determining an improvement in water quality, capable of determining it in no time, is provided. The device has a first measuring device for measuring by AC terminal electric conductimetry a capacitance of a first capacitor formed between a pair of electrodes immersed in untreated water to be supplied to a water quality-improving apparatus; a second measuring device for measuring by AC terminal electric conductimetry a capacitance of a second capacitor formed between a pair of electrodes immersed in water discharged by the apparatus; and a processor for calculating a ratio (Y/X) of a capacitance Y to a capacitance X wherein the capacitance X is a capacitance of the first capacitor outputted by the first measuring device when an AC frequency is 100 Hz or less, and the capacitance Y is a capacitance of the second capacitor at the same frequency outputted by the second measuring device.Type: GrantFiled: March 30, 2016Date of Patent: January 8, 2019Assignee: TOSHIKOGYO CO., LTD.Inventors: Yasuo Tajiri, Mitsuo Ishikawa, Nobuyuki Kamiya
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Publication number: 20180172614Abstract: A determination device for determining an improvement in water quality, capable of determining it in no time, is provided. The device has a first measuring device for measuring by AC terminal electric conductimetry a capacitance of a first capacitor formed between a pair of electrodes immersed in untreated water to be supplied to a water quality-improving apparatus; a second measuring device for measuring by AC terminal electric conductimetry a capacitance of a second capacitor formed between a pair of electrodes immersed in water discharged by the apparatus; and a processor for calculating a ratio (Y/X) of a capacitance Y to a capacitance X wherein the capacitance X is a capacitance of the first capacitor outputted by the first measuring device when an AC frequency is 100 Hz or less, and the capacitance Y is a capacitance of the second capacitor at the same frequency outputted by the second measuring device.Type: ApplicationFiled: March 30, 2016Publication date: June 21, 2018Applicant: TOSHIKOGYO CO., LTD.Inventors: Yasuo TAJIRI, Mitsuo ISHIKAWA, Nobuyuki KAMIYA
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Publication number: 20180088075Abstract: A method of determining an enhancement in rust-prevention of treated water by applying an electric current between a first cathode electrode and an anode electrode, and between a second cathode electrode and the anode electrode, wherein the first cathode electrode, the second cathode electrode, and the anode electrode are immersed in treated water; applying a comparative electric current between a first comparative cathode electrode and a comparative anode electrode, and between a second comparative cathode electrode and the comparative anode electrode, wherein the first comparative cathode electrode, the second comparative cathode electrode, and the at least one comparative anode electrode are immersed in untreated water; and determining an antirust effect of the treated water based on a first potential difference across the first cathode electrode and the second cathode electrode, and a second potential difference across the first comparative cathode electrode and the second comparative cathode electrode.Type: ApplicationFiled: November 10, 2017Publication date: March 29, 2018Inventors: Yasuo Tajiri, Mitsuo Ishikawa, Nobuyuki Kamiya, Kunio Nemoto
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Patent number: 9884407Abstract: Provided is a shot peening device with which recovered projection material and foreign bodies can be more precisely separated while inhibiting an increase in the size of the device. The shot peening device is provided with: a projector which projects projection material onto a workpiece (W); recovery mechanisms which recover the projection material projected by the projector; and a wind power sorting mechanism in which recovered projection material is allowed to fall freely while an upward air current is applied to the recovered projection material, and foreign bodies included in the recovered projection material are separated from the recovered projection material.Type: GrantFiled: July 27, 2012Date of Patent: February 6, 2018Assignee: SINTOKOGIO, LTD.Inventors: Mitsuo Ishikawa, Takuji Yamamoto
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Publication number: 20160187287Abstract: A determination device capable of easily and quickly determining an enhancement in rust-prevention of treated water and a method for determining the same are provided. The device has first and second potential difference measurement devices, each including at least one anode electrode, a pair of cathode electrodes, a first current generator for applying an electric current between the anode and a first cathode of the pair, a second current generator for applying an electric current between the anode and a second cathode, an electric current changer for periodically changing a magnitude of a current between the first and second cathodes, a measurement/output equipment for measuring a potential difference across the first and second cathodes, and a determiner for determining antirust effect of treated water based on signal A outputted by the equipment of the first potential difference measurement device and signal B outputted by that of the second device.Type: ApplicationFiled: May 30, 2014Publication date: June 30, 2016Inventors: Yasuo Tajiri, Mitsuo Ishikawa, Kunio Nemoto, Nobuyuki Kamiya
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Patent number: 9248548Abstract: The present invention provides a drum for a shot blasting apparatus that uniformly treats the works to be treated by increasing the level of agitation of the works that are buried at the bottom of the drum, and, further, suppressing the traces of collisions on the works, which traces are caused by the works colliding with each other. The drum comprises a hollow middle part, a lower-half part having the shape of a truncated cone, having a closed bottom, and having a projecting part for agitating that is connected to both the lower-half part and the middle part, and that agitates the works, wherein the projecting part for agitating has at least two surfaces, one being the surface for picking-up the works and the other being the surface for having the works slide down. The present invention also provides the shot blasting apparatus using the drum.Type: GrantFiled: October 14, 2010Date of Patent: February 2, 2016Assignee: I. SINTOKOGIO, LTD.Inventors: Ryo Tatematsu, Mitsuo Ishikawa, Tsunetoshi Suzuki
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Patent number: 9193035Abstract: To provide a novel shot-blasting machine to eliminate a dead space for a cover that shuts an opening for feeding and taking out works and to open and close the cover by moving a rotary drum around an axis. The machine has a cabinet 11, a rotary drum 13 having holes, and a centrifugal shooting machine 15. The rotary drum 13 moves, within the cabinet 11, around an axis through the positions for feeding, processing, and taking out the works. The cabinet 11 comprises a cover 51 for shutting an opening 11b for feeding and taking out the works. It has a wall 59 for sealing the side of the opening 11b. The cover 51 is integrated with the rotary drum 13 to move around the axis. It has walls 51a, 51b, 51d that fit the wall 59 for sealing. Lip seals 61, 63 seal the gap between the walls 51a, 51b, 51d of the cover 51 and the wall 59 for sealing.Type: GrantFiled: September 1, 2010Date of Patent: November 24, 2015Assignee: SINTOKOGIO, LTD.Inventors: Tsunetoshi Suzuki, Mitsuo Ishikawa, Ryo Tatematsu
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Publication number: 20150290770Abstract: Provided is a shot peening device with which recovered projection material and foreign bodies can be more precisely separated while inhibiting an increase in the size of the device. The shot peening device is provided with: a projector which projects projection material onto a workpiece (W); recovery mechanisms which recover the projection material projected by the projector; and a wind power sorting mechanism in which recovered projection material is allowed to fall freely while an upward air current is applied to the recovered projection material, and foreign bodies included in the recovered projection material are separated from the recovered projection material.Type: ApplicationFiled: July 22, 2012Publication date: October 15, 2015Applicant: SINTOKOGIO, LTD.Inventors: Mitsuo Ishikawa, Takuji Yamamoto
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Publication number: 20130090044Abstract: The present invention provides a drum for a shot blasting apparatus that uniformly treats the works to be treated by increasing the level of agitation of the works that are buried at the bottom of the drum, and, further, suppressing the traces of collisions on the works, which traces are caused by the works colliding with each other. The present invention also provides the shot blasting apparatus using the drum. The drum comprises a hollow middle part, a lower-half part having the shape of a truncated cone, having a closed, bottom, and having a projecting part for agitating that is connected to both the lower-half part and the middle part, and that agitates the works, wherein the projecting part for agitating has at least two surfaces, one being the surface for picking-up the works and the other being the surface for having the works slide down.Type: ApplicationFiled: October 14, 2010Publication date: April 11, 2013Inventors: Ryo Tatematsu, Mitsuo Ishikawa, Tsunetoshi Suzuki
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Patent number: 8400613Abstract: An outer ring (21) is arranged in a barrel unit (14c). A driving mechanism (25) provided on the outer ring shifts an optical element (M), and adjusts the position and the tilt of the optical element. A damper mechanism (31) for suppressing propagation of vibration to the optical element is attached to the outer ring.Type: GrantFiled: April 27, 2006Date of Patent: March 19, 2013Assignee: Nikon CorporationInventor: Mitsuo Ishikawa
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Publication number: 20130017767Abstract: To provide a novel shot-blasting machine to eliminate a dead space for a cover that shuts an opening for feeding and taking out works and to open and close the cover by moving a rotary drum around an axis. The machine has a cabinet 11, a rotary drum 13 having holes, and a centrifugal shooting machine 15. The rotary drum 13 moves, within the cabinet 11, around an axis through the positions for feeding, processing, and taking out the works. The cabinet 11 comprises a cover 51 for shutting an opening 11b for feeding and taking out the works. It has a wall 59 for sealing the side of the opening lib. The cover 51 is integrated with the rotary drum 13 to move around the axis. It has walls 51a, 51b, 51d that fit the wall 59 for sealing. Lip seals 61, 63 seal the gap between the walls 51a, 51b, 51d of the cover 51 and the wall 59 for sealing.Type: ApplicationFiled: September 1, 2010Publication date: January 17, 2013Inventors: Tsunetoshi Suzuki, Mitsuo Ishikawa, Ryo Tatematsu
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Patent number: 7832243Abstract: A shot-peening device(s) is installed on a side of a cabinet defining an ejection chamber in the cabinet. Shots ejected from the device to a workpiece fall and are conveyed in a horizontal direction by a horizontal screw conveyor positioned above a lower end of the cabinet and then conveyed upward by a vertical screw conveyor whose base end is above the lower end of the cabinet. The shots pass from an upper section of the vertical screw conveyor through a chute to reach an opening/closing gate. When the gate is opened and the shots are supplied to the device(s) for re-ejeciton, a portion of the shots is cause to overflow from the gate. The overflowed shots are caused to pass through a separator to remove impurities and then returned to the horizontal screw conveyor.Type: GrantFiled: May 19, 2005Date of Patent: November 16, 2010Assignee: Sintokogio, Ltd.Inventors: Koji Ushida, Mitsuo Ishikawa, Hiroaki Watanabe, Hideaki Kaga, Nobuyoshi Kawai, Akikazu Yokoi
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Patent number: 7692884Abstract: An optical system improved in weight balance and stability, comprising drive mechanisms that support, movable with respect to an outer ring, a virtual rigid body consisting of an inner ring, optical element in a shape asymmetrical with respect to the optical axis, and optical element holding members for holding the optical element and fixing it to the inner ring. The inner ring, the outer ring and drive mechanisms function as a parallel link mechanism. Balance weights are provided on the virtual rigid body such that the weight of the virtual rigid body acts uniformly on the drive mechanisms. Therefore, the optical element is not likely to vibrate when subjected to an external vibration or at adjusting. The optical system is suitable for use in an exposure system requiring high exposure accuracy.Type: GrantFiled: October 24, 2005Date of Patent: April 6, 2010Assignee: Nikon CorporationInventor: Mitsuo Ishikawa
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Publication number: 20090128283Abstract: The inventions relate to 1) a method for controlling the apparatus for the shot processing to safely activate it, the apparatus for the shot processing using the method for controlling, and a computer program for it, 2) a method for controlling the apparatus to improve the performance of it, the apparatus using the method for controlling, and a computer program for it, and 3) a method for controlling the apparatus to prevent a fire from breaking out in a dust collector which catches dust generated by it, the apparatus using the method for controlling, and a computer program for it.Type: ApplicationFiled: November 20, 2006Publication date: May 21, 2009Inventors: Shigeru Yamamoto, Mitsuo Ishikawa, Yoshiaki Okada, Keiji Suzuki, Takashi Tatematsu
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Publication number: 20090051889Abstract: An outer ring (21) is arranged in a barrel unit (14c). A driving mechanism (25) provided on the outer ring shifts an optical element (M), and adjusts the position and the tilt of the optical element. A damper mechanism (31) for suppressing propagation of vibration to the optical element is attached to the outer ring.Type: ApplicationFiled: April 27, 2006Publication date: February 26, 2009Applicant: NIKON CORPORATIONInventor: Mitsuo Ishikawa
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Publication number: 20080066512Abstract: Impeller-type ejectors (2) are installed on the surfaces on both sides of a cabinet (1) defining an ejection chamber in the cabinet. Shots ejected from the ejectors (2) to a workpiece and fallen are conveyed in the horizontal direction by a horizontal screw conveyor (4) positioned above the lower end of the cabinet (1) and then conveyed upward by a vertical screw conveyer (5) whose base end is above the lower end of the cabinet (1). The shots pass from the upper section of the vertical screw conveyer (5) through a chute (8) to reach an opening/closing gate (9). When the gate (9) is opened and the shots are supplied to the ejectors (2) for re-ejection, a portion of the shots is caused to overflow from the gate (9). The overflowed shots are caused to pass through a separator (11) and a sieve device (15) to remove impurities and then returned to the horizontal screw conveyor (4).Type: ApplicationFiled: May 19, 2005Publication date: March 20, 2008Inventors: Koji Ushida, Mitsuo Ishikawa, Hiroaki Watanabe, Hideaki Kaga, Nobuyoshi Kawai, Akikazu Yokoi
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Publication number: 20080055756Abstract: An optical system improved in weight balance and stability, comprising drive mechanisms that support, movable with respect to an outer ring, a virtual rigid body consisting of an inner ring, optical element in a shape asymmetrical with respect to the optical axis, and optical element holding members for holding the optical element and fixing it to the inner ring. The inner ring, the outer ring and drive mechanisms function as a parallel link mechanism. Balance weights are provided on the virtual rigid body such that the weight of the virtual rigid body acts uniformly on the drive mechanisms. Therefore, the optical element is not likely to vibrate when subjected to an external vibration or at adjusting. The optical system is suitable for use in an exposure system requiring high exposure accuracy.Type: ApplicationFiled: October 24, 2005Publication date: March 6, 2008Applicant: NIKON CORPORATIONInventor: Mitsuo Ishikawa
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Patent number: 6102823Abstract: A power transmission belt having a center belt with a length, an inside surface, and an outside surface. Upper and lower blocks are provided and each has a leading face, a trailing face, and laterally oppositely facing pulley-engaging side surfaces. The upper and lower blocks are connected to each other to maintain the upper block, lower block and center belt together in an operative relationship without penetrating the center belt. At least one of the pulley-engaging side surfaces on at least one of the upper and lower blocks is uninterrupted between the leading and trailing faces on the one of the upper and lower blocks so that the at least one side surface can engage a cooperating pulley surface along an uninterrupted line between the leading and trailing faces of the at least one side surface.Type: GrantFiled: October 7, 1992Date of Patent: August 15, 2000Assignee: Mitsuboshi Belting Ltd.Inventors: Yasutoshi Hosokawa, Akiyoshi Homan, Kiyokazu Wada, Koji Matsuo, Isao Koyama, Shinichi Takagi, Mitsuo Ishikawa
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Patent number: 6066829Abstract: A laser marker marks a workpiece surface with the pattern of a character, figure and/or symbol by laser beam scanning. It is desired to mark the pattern at the correct position on the workpiece surface. To facilitate the mark positioning, a virtual marking test is performed. In an embodiment, before the actual marking, a visible guide beam continuously and repeatedly scans the workpiece surface to form a projected image of the pattern or its domain. In another embodiment, before the actual marking, a visual display superimposes an image of the pattern and/or domain on a monitored image of the workpiece from a monitor camera. An automatic marking pattern generator is provided to automatically determine the character pattern to be marked from the entered character and marking area information.Type: GrantFiled: October 22, 1998Date of Patent: May 23, 2000Assignee: Miyachi Technos CorporationInventor: Mitsuo Ishikawa