Patents by Inventor Hirokazu Ishikawa
Hirokazu 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: 7422945Abstract: In a unit cell, a first conductive type active region and a second conductive type active region are provided. Those two active regions extend in a first direction. Each of the active regions have first and second ends thereof. The first end of the second conductive type active region opposes the second end of the first conductive type active region. A conductive pattern is provided to extend in the first direction across the first conductive type active region and the second conductive type active region. A first contact region is arranged adjacent the first end of the first conductive type active region in the first direction. A second contact region is arranged adjacent the second end of the second conductive type active region in the first direction.Type: GrantFiled: March 8, 2005Date of Patent: September 9, 2008Assignee: Oki Electric Industry Co., Ltd.Inventors: Hirohisa Masuda, Hirokazu Ishikawa
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Patent number: 7290647Abstract: A guide apparatus has a standard end plate split into a pair of split parts that can be positioned with respect to each other with high accuracy and firmly secured to each axial end of a moving block body without fear of displacement during use. The guide apparatus has a moving block relatively movably attached to a track rail. The moving block body has in a section perpendicular to the axial direction a geometry that allows the moving block body to be assembled to the track rail at an intermediate part of the track rail. The end plate consists essentially of a pair of split parts that are splittable to right and left in the width direction of the end plate. One split part has a positioning pin projecting from a parting surface thereof. A positioning hole fittable with the positioning pin is provided in a parting surface of the other split part. The positioning pin is fitted into the positioning hole to form an end plate assembly.Type: GrantFiled: March 10, 2005Date of Patent: November 6, 2007Assignee: THK Co., Ltd.Inventors: Hirokazu Ishikawa, Kaoru Hoshide, Takashi Ogata, Shunji Matsutomi
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Publication number: 20070116392Abstract: The present invention provides a rotary table system capable of satisfactorily meeting all the demands for achieving high axial and radial run-out accuracy, high resolution, and thin and medium- or large-sized system. The rotary table system includes a guide apparatus and a rotary table mounted on the guide apparatus. The guide apparatus includes a ring-shaped integrated rail 11 having no discontinuity in the travel direction thereof, and a plurality of guide blocks 12 that are assembled to the rail 11 from the direction of their surfaces opposing the rail 11. The surface of the rail 11 opposite to the surface thereof opposing the guide blocks 12 and the underside of the rotary table 14 are joined together. The rail 11 has an L-shaped cross-sectional configuration formed from a vertical portion and a horizontal portion extending from the upper end of the vertical portion in the radial direction of the rotary table.Type: ApplicationFiled: January 20, 2005Publication date: May 24, 2007Applicants: THE CO., LTD., DAITO SEIKI CO., LTD.Inventors: Hirokazu Ishikawa, Shunji Matsutomi, Tsutomu Hasegawa, Mitsuteru Nanba
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Patent number: 7201073Abstract: An angle adjusting device includes a pedestal, a pair of guide members having an arcuate track, an oscillation body moved along the track of the guide members, and a moving member for moving the oscillation body to adjust the angular position of the oscillation body around an oscillation axis. The moving member has a motor provided in the pedestal, a linkage shaft provided in the oscillation body, and a linkage mechanism interposed between the motor and the linkage shaft. A principal linkage member of the linkage mechanism is linked to a top end portion of an output shaft rotatably around an axis parallel to the oscillation axis, and linked to the linkage shaft to be linearly movable in its axial direction. The guide members have two flat reference planes, and fixed in a state where those reference planes are contact with two flat setting planes of the pedestal.Type: GrantFiled: March 4, 2003Date of Patent: April 10, 2007Assignees: Beldex Corporation, THK Co., Ltd.Inventors: Hirokazu Ishikawa, Yoichi Nakazato
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Publication number: 20060279804Abstract: A document presentation device comprising an imaging unit that takes images of documents and a display unit that displays the images of documents taken by the imaging unit.Type: ApplicationFiled: June 7, 2006Publication date: December 14, 2006Inventors: Hirokazu Ishikawa, Junichi Yokoyama, Takashi Nagashima, Akinori Hamana
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Publication number: 20060201782Abstract: A guide apparatus has a standard end plate split into a pair of split parts that can be positioned with respect to each other with high accuracy and firmly secured to each axial end of a moving block body without fear of displacement during use. The guide apparatus has a moving block relatively movably attached to a track rail. The moving block body has in a section perpendicular to the axial direction a geometry that allows the moving block body to be assembled to the track rail at an intermediate part of the track rail. The end plate consists essentially of a pair of split parts that are splittable to right and left in the width direction of the end plate. One split part has a positioning pin projecting from a parting surface thereof. A positioning hole fittable with the positioning pin is provided in a parting surface of the other split part. The positioning pin is fitted into the positioning hole to form an end plate assembly.Type: ApplicationFiled: March 10, 2005Publication date: September 14, 2006Applicant: THK CO., LTD,Inventors: Hirokazu Ishikawa, Kaoru Hoshide, Takashi Ogata, Shunji Matsutomi
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Publication number: 20060118097Abstract: There is provided a diamond wheel rolling on the surface of a brittle material without sliding thereon and hardly forming horizontal cracks. A diamond wheel 8 forms a scribe line on the surface of the brittle material while rolling thereon. In this diamond wheel, diamond grains 15, 15,—of 1000 to 8000 mesh are carried by a bonding agent. The diamond grains projecting from the bonding agent 16 easily bite the brittle material, so that the diamond wheel can roll on the brittle material without sliding even in no application of load more than necessary.Type: ApplicationFiled: June 3, 2004Publication date: June 8, 2006Inventor: Hirokazu Ishikawa
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Publication number: 20050155009Abstract: In a method for designing a unit cell, a first conductive type active region and a second conductive type active region are provided. Those two active regions extend in a first direction. Each of the active regions has first and second ends thereof. The first end of the second conductive type active regions is opposing to the second end of the first conductive type active region. In the method, a poly-silicon pattern is provided to extend in the first direction across the first conductive type active region and second conductive type active region. A first contact region is arranged adjacent the first end of the first conductive type active region in the first direction. A second contact region is arranged adjacent the second end of the second conductive type active region in the first direction.Type: ApplicationFiled: March 8, 2005Publication date: July 14, 2005Inventors: Hirohisa Masuda, Hirokazu Ishikawa
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Patent number: 6905931Abstract: In a unit cell, a first conductive type active region and a second conductive type active region are provided. Those two active regions extend in a first direction. Each of the active regions has first and second ends thereof. The first end of the second conductive type active region opposes the second end of the first conductive type active region. A poly-silicon pattern is provided to extend in the first direction across the first conductive type active region and second conductive type active region. A first contact region is arranged adjacent the first end of the first conductive type active region in the first direction. A second contact region is arranged adjacent the second end of the second conductive type active region in the first direction.Type: GrantFiled: April 1, 2002Date of Patent: June 14, 2005Assignee: Oki Electric Industry Co., Ltd.Inventors: Hirohisa Masuda, Hirokazu Ishikawa
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Patent number: 6832439Abstract: A scribing device for forming a scribe line on a work comprises a vibration generator for generating vibration, a cutter for cutting a work by utilizing vibration thereof, a shaft extending vertically from the vibration generator so as to transmit the vibration of the vibration generator to the cutter, a guide unit for guiding a linear motion of the shaft in a central axis direction thereof, and a load adjusting mechanism for adjusting a load applied to the work from the cutter, the load adjusting mechanism being operated by magnetic force. According to such scribing device, the guide unit guides a vertical moving (rising) motion of the shaft by the load adjusting mechanism and guides the vibration of the shaft caused by the vibration generated by the vibration generator.Type: GrantFiled: October 31, 2002Date of Patent: December 21, 2004Assignees: THK Co., Ltd., Beldex CorporationInventor: Hirokazu Ishikawa
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Patent number: 6804889Abstract: A holder 20 is rotatably connected to a body 10. A scribe tool 30 is attached to one end of the holder 20. A plate spring 16 is fixed to the body 10, and a receiving plate 26 is fixed to the holder 20. A piezo-actuator 40 is interposed between the plate spring 16 and the receiving plate 26. One end of a plate spring 50 having a small spring constant is fixed to the holder 20. The body 10 is provided with an adjustment screw 60. When a lower end part 65 of the adjustment screw 60 is protruded, the lower end part 65 presses the plate spring 50 for flexure, thereby generating a resilient force to the plate spring 50. By this, a rotational force is given to the holder 20 and thus a pressing load directing toward a workpiece is given to the scribe tool 30.Type: GrantFiled: March 18, 2003Date of Patent: October 19, 2004Assignees: Beldex Corporation, THK Co., Ltd.Inventors: Hirokazu Ishikawa, Toshio Hayashi, Fujio Tateda, Jun Sakamoto, Hideo Oka
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Publication number: 20040014490Abstract: A code-reading apparatus determines the type of data in recorded code data and carries out appropriate processes depending on the determined type of data. The code-reading apparatus comprises an imaging unit 7 for photographing encoded data. The encoded data comprises a header portion and a body portion, the body portion including encoded ring tone data, the header portion including a data identifier D indicating the type of data in the body portion. The apparatus further comprises a data identifier unit 19a for identifying the type of the encoded data photographed by the imaging unit 7 based on the data identifier D, and control units 13 and 19 for reading the encoded data depending on the identified data type and for reproducing the ring tone data that has been read.Type: ApplicationFiled: July 15, 2003Publication date: January 22, 2004Inventors: Takeharu Muramatsu, Hirokazu Ishikawa
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Publication number: 20030177650Abstract: A holder 20 is rotatably connected to a body 10. A scribe tool 30 is attached to one end of the holder 20. A plate spring 16 is fixed to the body 10, and a receiving plate 26 is fixed to the holder 20. A piezo-actuator 40 is interposed between the plate spring 16 and the receiving plate 26. One end of a plate spring 50 having a small spring constant is fixed to the holder 20. The body 10 is provided with an adjustment screw 60. When a lower end part 65 of the adjustment screw 60 is protruded, the lower end part 65 presses the plate spring 50 for flexure, thereby generating a resilient force to the plate spring 50. By this, a rotational force is given to the holder 20 and thus a pressing load directing toward a workpiece is given to the scribe tool 30.Type: ApplicationFiled: March 18, 2003Publication date: September 25, 2003Applicants: BELDEX CORPORATION, THK CO., LTD.,Inventors: Hirokazu Ishikawa, Toshio Hayashi, Fujio Tateda, Jun Sakamoto, Hideo Oka
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Publication number: 20030167865Abstract: An angle adjusting device includes a pedestal, a pair of guide members having an arcuate track, an oscillation body moved along the track of the guide members, and a moving member for moving the oscillation body to adjust the angular position of the oscillation body around an oscillation axis. The moving member has a motor provided in the pedestal, a linkage shaft provided in the oscillation body, and a linkage mechanism interposed between the motor and the linkage shaft. A principal linkage member of the linkage mechanism is linked to a top end portion of an output shaft rotatably around an axis parallel to the oscillation axis, and linked to the linkage shaft to be linearly movable in its axial direction. The guide members have two flat reference planes, and fixed in a state where those reference planes are contact with two flat setting planes of the pedestal.Type: ApplicationFiled: March 4, 2003Publication date: September 11, 2003Applicant: BELDEX CORPORATIONInventors: Hirokazu Ishikawa, Yoichi Nakazato
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Publication number: 20030115327Abstract: The home gateway HGW (1) includes a communication section (31), an authentication function section (32), a directory management function section (33), and a communication path setting function section (34). The communication section (31) receives data transmitted to the HGW (1). The authentication function section (32) authenticates the aforementioned data to be from an authorized user or not. Responsive to a service registration, the directory management function section (33) registers service information, checks the matching between the service information and service permission policies, and requests the communication path setting function section (34) to set a communication path. The communication path setting function section (34) monitors the state of data communication along the communication paths, and closes any unnecessary communication paths that may have been set.Type: ApplicationFiled: November 6, 2002Publication date: June 19, 2003Inventors: Takeshi Kokado, Yasunori Okada, Kouji Kubota, Takahiro Saitou, Hirokazu Ishikawa
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Publication number: 20030084578Abstract: A scribing device for forming a scribe line on a work comprises a vibration generator for generating vibration, a cutter for cutting a work by utilizing vibration thereof, a shaft extending vertically from the vibration generator so as to transmit the vibration of the vibration generator to the cutter, a guide unit for guiding a linear motion of the shaft in a central axis direction thereof, and a load adjusting mechanism for adjusting a load applied to the work from the cutter, the load adjusting mechanism being operated by magnetic force. According to such scribing device, the guide unit guides a vertical moving (rising) motion of the shaft by the load adjusting mechanism and guides the vibration of the shaft caused by the vibration generated by the vibration generator.Type: ApplicationFiled: October 31, 2002Publication date: May 8, 2003Applicant: THK CO., LTD.,Inventor: Hirokazu Ishikawa
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Patent number: 6536121Abstract: A scribing apparatus which forms a scribe line on a work 100 comprises a scribe body 10 having a cutter 13 put on the work 100 and a vibration generation member 14 which vibrates the cutter 13 in a direction perpendicular to the work 100 periodically, a support device having a support body 20 for supporting the scribe body 10 to be movable, and magnetic force applying means 40 for holding the scribe body 10 at a standard height in the direction by using magnetic force. The magnetic force applying means 40 includes a pair of magnets 41a, 41b and a pair of magnets 42a, 42b repulsing each other in a direction parallel to a direction in which the vibration generation member 14 vibrates. And magnetically repelling force applied to the scribe body 10 by said first pair of magnets 41a, 41b and magnetically repelling force applied to the scribe body 10 by said second pair of magnets 42a, 42b oppose to each other.Type: GrantFiled: August 2, 2000Date of Patent: March 25, 2003Assignees: THK Co., Ltd., Beldex CorporationInventors: Hirokazu Ishikawa, Gyo Shimotoyodome
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Patent number: 6478206Abstract: A method of forming a scribe line on a work surface is carried out by a scribing apparatus comprising a scribe body including an abutment member, such as cutter provided with an penetrator, having at least first and second ridgelines and a sharp tip end portion and a vibration generating member for periodically applying vibrations to the abutment member. A vibration is applied to the abutment member with the tip end portion thereof abutting against the work surface, and the scribe body is relatively moved along the work surface to thereby form a scribe line on the work surface. In this scribing method, a first angle constituted by the first ridgeline of the abutment member and the work surface and a second angle constituted by the second ridgeline thereof and the work surface are made different from each other and the first and second ridgelines are opposed in the moving direction of the scribe body.Type: GrantFiled: April 6, 2000Date of Patent: November 12, 2002Assignees: THK Co., Ltd., Beldex CorporationInventors: Gyo Shimotoyodome, Hirokazu Ishikawa, Takeki Shirai
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Publication number: 20020106851Abstract: In a method for designing a unit cell, a first conductive type active region and a second conductive type active region are provided. Those two active regions extend in a first direction. Each of the active regions has first and second ends thereof. The first end of the second conductive type active regions is opposing to the second end of the first conductive type active region. In the method, a poly-silicon pattern is provided to extend in the first direction across the first conductive type active region and second conductive type active region. A first contact region is arranged adjacent the first end of the first conductive type active region in the first direction. A second contact region is arranged adjacent the second end of the second conductive type active region in the first direction.Type: ApplicationFiled: April 1, 2002Publication date: August 8, 2002Inventors: Hirohisa Masuda, Hirokazu Ishikawa
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Patent number: 6399972Abstract: In a unit cell, a first conductive type active region and a second conductive type active region are provided. Those two active regions extend in a first direction. Each of the active regions have first and second ends thereof. The first end of the second conductive type active region opposes the second end of the first conductive type active region. A conductive pattern is provided to extend in the first direction across the first conductive type active region and the second conductive type active region. A first contact region is arranged adjacent the first end of the first conductive type active region in the first direction. A second contact region is arranged adjacent the second end of the second conductive type active region in the first direction.Type: GrantFiled: March 13, 2000Date of Patent: June 4, 2002Assignee: Oki Electric Industry Co., Ltd.Inventors: Hirohisa Masuda, Hirokazu Ishikawa