Patents by Inventor Naoto Kobayashi
Naoto Kobayashi 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: 20070257668Abstract: A magnetized layer (12) is integrally bonded to an annular holder (11) installed to a rotating body, the magnetized layer is made of a material obtained by mixing a magnetic fine particle to a rubber elastic material or a synthetic resin material and magnetized in a multipolar manner at a predetermined pitch in a circumferential direction, and a portion having a different sectional shape from the other portions is formed in a part in a circumferential direction in a joining part of the holder (11) with the magnetized layer (12), by a raised part (11c) or the like, so that a significant point of a signal level is formed in this portion on the basis of a difference in a magnitude of a magnetic field, whereby the significant point is set to a rotation angle measurement starting point.Type: ApplicationFiled: July 14, 2005Publication date: November 8, 2007Inventors: Takehiro Nakagawa, Naoto Kobayashi
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Publication number: 20070246890Abstract: An annular member, a sealing device, and a magnetic encoder device are provided. In the annular member, when a circular tube section (71) of the annular member (7) is fitted with interference in either one of an inner member (3) and an outer member (4) that are movable relative to each other, strain in the circular tube section (71) produced by the fitting interference is not transmitted to a flange section (72) to prevent wavy projections and recesses from being produced in the flange section (72). In the sealing device and the magnetic encoder device, even if the sealing device (1) and a magnetic encoder device (50) that have the annular member (7) are fitted with interference in the either one member, strain in the circular tube section (71) produced by the fitting interference is not transmitted to the flange section (72).Type: ApplicationFiled: April 26, 2005Publication date: October 25, 2007Applicant: NOK CorporationInventor: Naoto Kobayashi
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Publication number: 20070182406Abstract: To easily manufacture an encoder (1), in which N-poles (5) and S-poles (6) of magnets are arranged alternately in a circumferential direction and in which an unequal pitch portion (8) is provided in a part on a circumference, without using a magnetizing head of a special shape having an unequal pitch portion, the unequal pitch portion (8) is formed by arranging the N-poles (5) and the S-poles (6) at an equal pitch all over the circumference and then providing a part on the circumference with a shielding member (7) for shielding a magnetism, or the unequal pitch portion (8) is formed by arranging the N-poles (5) and the S-poles (6) at an equal pitch all over the circumference and then providing a part on the circumference with a cut portion.Type: ApplicationFiled: April 14, 2005Publication date: August 9, 2007Applicant: NOK CORPORATIONInventors: Kenichi Yarimizu, Shinji Nagasawa, Yoshiaki Ono, Naoto Kobayashi
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Patent number: 7232129Abstract: To prevent lowering and unstableness of magnetic force and trouble caused by influence of muddy water or the like entered between the magnetic encoder (21) and a magnetic sensor (6), a sealing apparatus (4) comprises an approximately C-shaped protecting annular member (11) fitted to one of an inner member (1) and an outer member (2), a first encoder member (12) having a cylinder portion (12a) fitted to the protecting annular member (11), a second encoder member (13) held between the protecting annular member (11) and the first encoder member (12), a seal annular member (14), and a seal member (15) which is vulcanized and bonded to the seal annular member (14) and has seal lips slidably contacting with the protecting annular member (11) and the encoder member (12).Type: GrantFiled: October 12, 2004Date of Patent: June 19, 2007Assignee: NOK CorporationInventor: Naoto Kobayashi
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Publication number: 20070024273Abstract: To provide a sealing device in which a magnetic encoder can be protected so as to improve detecting precision and reliability, without increasing the number of parts and assembling man-hour and without enlarging a setting space, the sealing device is structured such that a detected portion is arranged in the sealed fluid side of an annular member, a first annular member fitted to a shaft is formed with an axial direction portion and diametrical direction portions extending in the inward and outward diametrical directions from the axial direction portion, one of the diametrical direction portions supports the detected portion in the sealed fluid side, a seal lip is in slidably contact with the other diametrical direction portion for sealing, and the seal portion is formed with the seal lip and the micro space.Type: ApplicationFiled: September 10, 2004Publication date: February 1, 2007Inventor: Naoto Kobayashi
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Patent number: 7154571Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member having a frame-shaped part which is arranged at a displaying surface side of the liquid crystal display element and having a display window exposing a displaying surface of the liquid crystal display element, and a side wall which is extended from the frame-shaped part along a thickness direction of the liquid crystal display element. A light source is arranged opposite to another surface of the liquid crystal display element which is opposite to the displaying surface thereof and irradiates the another surface of the liquid crystal display element with illumination light. A housing member which houses the light source has a main surface opposite to a frame-shaped part of the frame member and a side wall formed at a periphery of the main surface thereof.Type: GrantFiled: March 30, 2006Date of Patent: December 26, 2006Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Patent number: 7142266Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member arranged at a displaying surface side of the liquid crystal display element and having a display window, a light source arranged at an opposite surface of the liquid crystal display element to the displaying surface thereof for irradiating the liquid crystal display element, and a housing member having a side wall formed at a periphery thereof and housing the light source therein. The frame member is fixed to the housing member and has a side wall opposite to an outer surface of the side wall of the housing member, and a screw member has a tapped hole in which a fitting screw is screwed.Type: GrantFiled: February 10, 2006Date of Patent: November 28, 2006Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Publication number: 20060164567Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member having a frame-shaped part which is arranged at a displaying surface side of the liquid crystal display element and having a display window exposing a displaying surface of the liquid crystal display element, and a side wall which is extended from the frame-shaped part along a thickness direction of the liquid crystal display element. A light source is arranged opposite to another surface of the liquid crystal display element which is opposite to the displaying surface thereof and irradiates the another surface of the liquid crystal display element with illumination light. A housing member which houses the light source has a main surface opposite to a frame-shaped part of the frame member and a side wall formed at a periphery of the main surface thereof.Type: ApplicationFiled: March 30, 2006Publication date: July 27, 2006Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Publication number: 20060125974Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member arranged at a displaying surface side of the liquid crystal display element and having a display window, a light source arranged at an opposite surface of the liquid crystal display element to the displaying surface thereof for irradiating the liquid crystal display element, and a housing member having a side wall formed at a periphery thereof and housing the light source therein. The frame member is fixed to the housing member and has a side wall opposite to an outer surface of the side wall of the housing member, and a screw member has a tapped hole in which a fitting screw is screwed.Type: ApplicationFiled: February 10, 2006Publication date: June 15, 2006Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Publication number: 20060076737Abstract: To prevent lowering and unstableness of magnetic force and trouble caused by influence of muddy water or the like entered between the magnetic encoder (21) and a magnetic sensor (6), a sealing apparatus (4) comprises an approximately C-shaped protecting annular member (11) fitted to one of an inner member (1) and an outer member (2), a first encoder member (12) having a cylinder portion (12a) fitted to the protecting annular member (11), a second encoder member (13) held between the protecting annular member (11) and the first encoder member (12), a seal annular member (14), and a seal member (15) which is vulcanized and bonded to the seal annular member (14) and has seal lips slidably contacting with the protecting annular member (11) and the encoder member (12).Type: ApplicationFiled: October 12, 2004Publication date: April 13, 2006Inventor: Naoto Kobayashi
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Patent number: 7027111Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member having a frame-shaped part which is arranged at a displaying surface side of the liquid crystal display element and having a display window exposing a displaying surface of the liquid crystal display element, and a side wall which is extended from the frame-shaped part along a thickness direction of the liquid crystal display element. A light source is arranged opposite to another surface of the liquid crystal display element which is opposite to the displaying surface thereof and irradiates the another surface of the liquid crystal display element with illumination light. A housing member which houses the light source has a main surface opposite to a frame-shaped part of the frame member and a side wall formed at a periphery of the main surface thereof.Type: GrantFiled: May 18, 2004Date of Patent: April 11, 2006Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Patent number: 7002645Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member arranged at a displaying surface side of the liquid crystal display element and having a display window, a light source arranged at an opposite surface of the liquid crystal display element to the displaying surface thereof for irradiating the liquid crystal display element, and a housing member having a side wall formed at a periphery thereof and housing the light source therein. The frame member is fixed to the housing member and has a side wall opposite to an outer surface of the side wall of the housing member, and a screw member has a tapped hole in which a fitting screw is screwed.Type: GrantFiled: May 18, 2004Date of Patent: February 21, 2006Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Patent number: 6954243Abstract: In a liquid crystal display device comprising a pair of substrates between which a liquid crystal layer is interposed, a display surface provided on one of the substrates, and a lighting device arranged at a side of another of the substrates, the present invention forms a light shielding film on at least one of side surfaces of the substrates along a direction perpendicular to the display surface and prevents light leak leaking from the lighting device through the at least one of side surfaces.Type: GrantFiled: May 9, 2002Date of Patent: October 11, 2005Assignees: Hitachi, Ltd., Hitachi Device Engineering Co. Ltd.Inventors: Yoko Ota, Shigeki Nishizawa, Norihisa Fukayama, Naoto Kobayashi
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Patent number: 6946994Abstract: The present invention relates mainly to a small dielectric antenna capable of obtaining a good VSWR characteristic even if it is placed in the vicinity of a grounding pattern when mounted on a circuit board. A dielectric antenna is formed in which a feed point of an antenna element 13 having a resonance frequency set to a first frequency in a first frequency band and a feed point of an antenna element 14 having a resonance frequency set to a second frequency are connected to an external feed terminal 12b, and an open stub 15 connected to the antenna element 14 in the vicinity of the feed point. The open stub 15 is provided to enable resonance at each of frequencies to be used while the lengths of the antenna elements 13 and 14 are shorter than ordinary lengths determined according to the wavelengths of the frequency to be used.Type: GrantFiled: April 15, 2002Date of Patent: September 20, 2005Assignee: Taiyo Yuden Co., Ltd.Inventors: Tatsuya Imaizumi, Hironori Okado, Hisahiro Yasuda, Naoto Kobayashi, Takashi Amano, Kazuya Maekawa
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Publication number: 20050078034Abstract: The present invention relates mainly to a small dielectric antenna capable of obtaining a good VSWR characteristic even if it is placed in the vicinity of a grounding pattern when mounted on a circuit board. A dielectric antenna is formed in which a feed point of an antenna element 13 having a resonance frequency set to a first frequency in a first frequency band and a feed point of an antenna element 14 having a resonance frequency set to a second frequency are connected to an external feed terminal 12b, and an open stub 15 connected to the antenna element 14 in the vicinity of the feed point. The open stub 15 is provided to enable resonance at each of frequencies to be used while the lengths of the antenna elements 13 and 14 are shorter than ordinary lengths determined according to the wavelengths of the frequency to be used.Type: ApplicationFiled: April 15, 2002Publication date: April 14, 2005Inventors: Tatsuya Imaizumi, Hironori Okado, Hisahiro Yasuda, Naoto Kobayashi, Takashi Amano, Kazuya Maekawa
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Publication number: 20040212755Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member arranged at a displaying surface side of the liquid crystal display element and having a display window, a light source arranged at an opposite surface of the liquid crystal display element to the displaying surface thereof for irradiating the liquid crystal display element, and a housing member having a side wall formed at a periphery thereof and housing the light source therein. The frame member is fixed to the housing member and has a side wall opposite to an outer surface of the side wall of the housing member, and a screw member has a tapped hole in which a fitting screw is screwed.Type: ApplicationFiled: May 18, 2004Publication date: October 28, 2004Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Publication number: 20040212756Abstract: A liquid crystal display device includes a liquid crystal display element, a frame member having a frame-shaped part which is arranged at a displaying surface side of the liquid crystal display element and having a display window exposing a displaying surface of the liquid crystal display element, and a side wall which is extended from the frame-shaped part along a thickness direction of the liquid crystal display element. A light source is arranged opposite to another surface of the liquid crystal display element which is opposite to the displaying surface thereof and irradiates the another surface of the liquid crystal display element with illumination light. A housing member which houses the light source has a main surface opposite to a frame-shaped part of the frame member and a side wall formed at a periphery of the main surface thereof.Type: ApplicationFiled: May 18, 2004Publication date: October 28, 2004Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Patent number: 6756086Abstract: A diamond semiconductor includes a high-quality thin diamond film layer with few crystal defects and few impurities, implanted with ions of dopant elements and controllable in conductivity determined by a kind and a concentration of the dopant elements. The diamond semiconductor is fabricated by a method including the step of implanting ions of dopant elements into a high-quality thin diamond film layer with few crystal defects and few impurities under conditions that can attain given distribution of concentrations of the dopant elements and with the high-quality thin diamond film layer kept to a temperature in accordance with the conditions so as not to be graphitized, to thereby enable the diamond semiconductor to have conductivity determined by a kind and a concentration of the dopant elements.Type: GrantFiled: March 6, 2002Date of Patent: June 29, 2004Assignees: Agency of Industrial Science and Technology, Ministry of International Trade and Industry, Japan Science and Technology CorporationInventors: Masataka Hasegawa, Masahiko Ogura, Daisuke Takeuchi, Hideyo Okushi, Naoto Kobayashi, Sadanori Yamanaka
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Patent number: 6741299Abstract: In order to install a liquid crystal display device comprising a liquid crystal display element, a frame being arranged at a displaying surface side thereof, a light source being arranged at an opposite side to the displaying surface side, and a housing member for housing the light source to an exterior case easily and surely, the present invention provides a screw member to which a fitting screw for fixing the liquid crystal display device to the exterior case is screwed at a side wall of the housing member, a protruded portion being protruded in a thickness direction of the liquid crystal display device at the side wall having the screw member, and an opening which the protruded portion is inserted into in the frame, respectively.Type: GrantFiled: March 5, 2001Date of Patent: May 25, 2004Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Norihisa Fukayama, Naoto Kobayashi, Fumitoshi Matsuda, Yoshihiro Imajo, Yoko Ota
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Patent number: RE38516Abstract: Herein disclosed are a liquid crystal display device and a data processing device, which can have their frame portions reduced in area to reduce the size and weight by extracting the terminals of video signals to only one side of a liquid crystal display panel and by arranging a video signal line driving circuit substrate to be connected with the terminals, only at one side of the display panel. A liquid crystal display includes upper and lower casings for holding a liquid crystal display panel and substrates. The casings are provided with at least one of fixing pawls and recesses for receiving the fixing pawls so as to enable the connection of the casings.Type: GrantFiled: August 14, 2001Date of Patent: May 18, 2004Assignees: Hitachi, Ltd., Hitachi Device Engineering Co., Ltd.Inventors: Kaoru Hasegawa, Yoshio Toriyama, Naoto Kobayashi, Katsuhiko Yarita, Hironori Kondo, Masahiko Suzuki, Yoshihiro Imajo