Patents by Inventor Noritaka Ishiyama
Noritaka Ishiyama 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: 7906877Abstract: The present invention provides a linear motor device that can reduce a variation in thrust caused by a variation in attractive force. The linear motor device includes a linear motor 1 and a control section 30 that controls the linear motor 1. The linear motor 1 includes a magnet member 2 composed of permanent magnets having respective N poles and S poles alternately arranged in an axial direction, and a coil member 3 which is located orthogonally to the axial direction with respect to the magnet member 2 and through which the magnet member 2 is movable in the axial direction relative to the coil member 3. The control section 30 controls current conducted through the coil member 3 so that a moving one of the magnet member 2 and the coil member 3 reciprocates within a use range L corresponding to a part of a pitch p between the magnetic poles N and S in the magnet member 2.Type: GrantFiled: September 25, 2007Date of Patent: March 15, 2011Assignees: Murata Machinery Ltd., GMC Hillstone Co., Ltd.Inventors: Takuya Okada, Noritaka Ishiyama
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Patent number: 7768159Abstract: The present invention provides a linear motor 1 that can prevent a magnet member 2 from falling down when a power supply is turned off. A linear motor 1 includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and trough which the magnet member 2 is movable in an axial direction relative to the coil member 3. A magnetic substance 3 is provided in the vicinity of one end of the coil member 3 to allow the magnet member 2 to exert a magnetic attractive force.Type: GrantFiled: September 25, 2007Date of Patent: August 3, 2010Assignees: Murata Machinery, Ltd., GMC Hillstone Co., Ltd.Inventors: Takuya Okada, Noritaka Ishiyama
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Patent number: 7393413Abstract: A coating apparatus 10 includes a base 11, a substrate support stage unit 2 mounted on the base 11 and capable of fixedly supporting a substrate 1, a coating unit 3 mounted on the base 11 and capable of discharging a coating material onto a substrate 1 fixedly supported on the substrate support stage unit 2, and a motor unit 4 for driving at least either the substrate support stage unit 2 or the coating unit 3 for sliding on the base 11. The motor unit 3 has a stator assembly 22 on the base 11. The stator assembly 22 includes a plurality of magnets 31 linearly arranged such that opposite magnetic polarities of the magnets alternately change, and a pair of magnet holding members 37 and 38 for linearly pressing the magnets 31 together from both the ends of the magnets.Type: GrantFiled: March 5, 2004Date of Patent: July 1, 2008Assignees: Junji Kido, GMC Hillstone Co., Ltd., Dai Nippon Printing Co., Ltd.Inventors: Junji Kido, Noritaka Ishiyama, Daigo Aoki, Norikatsu Nakamura
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Publication number: 20080079522Abstract: The present invention provides a linear motor 1 that can prevent a magnet member 2 from falling down when a power supply is turned off. A linear motor 1 includes a magnet member 2 composed of permanent magnets having alternately arranged respective N poles and S poles and a coil member 3 which surrounds a periphery of the magnet member 2 and trough which the magnet member 2 is movable in an axial direction relative to the coil member 3. A magnetic substance 3 is provided in the vicinity of one end of the coil member 3 to allow the magnet member 2 to exert a magnetic attractive force.Type: ApplicationFiled: September 25, 2007Publication date: April 3, 2008Applicants: MURATA MACHINERY, LTD., GMC HILLSTONE CO., LTD.Inventors: Takuya Okada, Noritaka Ishiyama
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Publication number: 20080079319Abstract: The present invention provides a linear motor device that can reduce a variation in thrust caused by a variation in attractive force. The linear motor device includes a linear motor 1 and a control section 30 that controls the linear motor 1. The linear motor 1 includes a magnet member 2 composed of permanent magnets having respective N poles and S poles alternately arranged in an axial direction, and a coil member 3 which is located orthogonally to the axial direction with respect to the magnet member 2 and through which the magnet member 2 is movable in the axial direction relative to the coil member 3. The control section 30 controls current conducted through the coil member 3 so that a moving one of the magnet member 2 and the coil member 3 reciprocates within a use range L corresponding to a part of a pitch p between the magnetic poles N and S in the magnet member 2.Type: ApplicationFiled: September 25, 2007Publication date: April 3, 2008Applicants: MURATA MACHINERY, LTD., GMC HILLSTONE CO., LTD.Inventors: Takuya Okada, Noritaka Ishiyama
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Publication number: 20060162650Abstract: A coating apparatus 10 includes a base 11, a substrate support stage unit 2 mounted on the base 11 and capable of fixedly supporting a substrate 1, a coating unit 3 mounted on the base 11 and capable of discharging a coating material onto a substrate 1 fixedly supported on the substrate support stage unit 2, and a motor unit 4 for driving at least either the substrate support stage unit 2 or the coating unit 3 for sliding on the base 11. The motor unit 3 has a stator assembly 22 on the base 11. The stator assembly 22 includes a plurality of magnets 31 linearly arranged such that opposite magnetic polarities of the magnets alternately change, and a pair of magnet holding members 37 and 38 for linearly pressing the magnets 31 together from both the ends of the magnets.Type: ApplicationFiled: March 5, 2004Publication date: July 27, 2006Applicants: Junji Kido, GMC Hillstone Co., Ltd., Dai Nippon Printing Co., Ltd.Inventors: Junji Kido, Noritaka Ishiyama, Daigo Aoki, Norikatsu Nakamura
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Patent number: 6040642Abstract: A stator in a linear motor includes a plurality of cylindrical permanent magnets and a center shaft made of non-magnetic material and inserted in the permanent magnets. The permanent magnets are tightened from both sides thereof so that the adjacent permanent magnets may be close to each other.Type: GrantFiled: May 12, 1998Date of Patent: March 21, 2000Assignee: GMC Co., Ltd.Inventor: Noritaka Ishiyama
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Patent number: 5589768Abstract: A magnetoresistance-effect magnetic sensor provides an effective output even in atmospheres higher in temperature than those relevant to prior art sensors. The invented sensor has magnetoresistance-effect devices each connected to a constant current circuit. The voltage across each device is output as a magnetic sensitive output. With this structure, a temperature rise induced decrease in magnetoresistivity of the device is compensated for by an increase in intrinsic resistance thereof attributable to temperature rise. Thus, the sensor provides a reliable output even in high temperature atmospheres.Type: GrantFiled: June 23, 1994Date of Patent: December 31, 1996Assignee: Mitsubishi Steel Mfg. Co., Ltd.Inventors: Noritaka Ishiyama, Koutarou Kobayashi
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Patent number: 5539372Abstract: A magnetic resistance element which contains a substrate, a ferromagnetic thin film containing a member of Fe--Ni alloys series formed on said substrate, a first protective film containing silicon oxide formed on said ferromagnetic thin film and a second protective film containing a synthetic resin formed on said first protective film.Type: GrantFiled: June 17, 1993Date of Patent: July 23, 1996Assignee: Mitsubishi Steel Mfg. Co., Ltd.Inventors: Noritaka Ishiyama, Kotaro Kobayashi
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Patent number: 5297881Abstract: A printing machine for printing at printing positions along a line, and for performing a positional control by linear encoder. The printing machine comprises a linear encoder memory and detecting means. The linear encoder memory has a line-shaped magnetic recording medium formed of an alloy consisting essentially of iron, chromium, cobalt, no more than 0.03 weight % of carbon, and optionally 0.05 to 3 weight % of at least one element selected from the group consisting of titanium, vanadium, molybdenum and tungsten. The linear encoder memory extends parallel along a line of printing positions. The detecting means is coupled to the magnetic recording medium and is movable relative to the magnetic recording medium. The decting means detects a magnetic record on the magnetic recording medium. The detecting means comprises a magnetic head which includes a magnetic sensor element and a supporting mount.Type: GrantFiled: December 22, 1992Date of Patent: March 29, 1994Assignee: Mitsubishi Steel Mfg. Co., Ltd.Inventor: Noritaka Ishiyama
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Patent number: 5227607Abstract: This invention relates to a YAG laser working machine, and an object thereof is to enable highly precise processing such as one required for processing of a photomask which is used at, for example, a step of manufacturing semiconductors. The YAG laser working machine according to this invention is such that a machine body is provided with restriction means for reducing a beam diameter of a laser beam, is provided with shutter means for executing ON.multidot.OFF control of application of the laser beam at a location on the outside of the oscillator, and is provided with highly harmonizing means for the laser beam. A base disk on which the machine body is mounted is formed of solid stone, and is mounted on a plurality of legs through interposition of respective pneumatic springs. Pulse signals regarding the X-movement and the Y-movement of an XY-table are processed by an OR circuit. Pulse application of the laser beam is controlled on the basis of the signals processed by the OR circuit.Type: GrantFiled: March 12, 1992Date of Patent: July 13, 1993Assignees: Mid Co., Ltd., JVF Inc.Inventor: Noritaka Ishiyama
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Patent number: 5002370Abstract: There is disclosed a reflection light preventive device comprising a cylinder-like transparent glass body being included many granulated permanent magnets therein to be possessed of the Faraday effect and a .lambda./4 polarizer disposed at the front and rear of said glass body respectively in a shifted relation each other in their planes of polarization.Type: GrantFiled: July 9, 1990Date of Patent: March 26, 1991Assignee: Masahiko OkuraInventors: Masahiko Okura, Noritaka Ishiyama