Patents by Inventor Masumi Hattori
Masumi Hattori 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: 6535074Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), has at least two external input/output terminals (11 and 12) for transferring a signal to and from an external unit and at least one of external grounding terminals (13, 14, and 15) for grounding, wherein at least one (13) of the external grounding terminals is set between at least one set of the external input/output terminals (11 and 12).Type: GrantFiled: January 4, 2002Date of Patent: March 18, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Patent number: 6531930Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), has: at least two external input/output terminals (11 and 12) for transferring a signal to and from an external unit and at least one of external grounding terminals (13, 14, and 15) for grounding, wherein at least one (13) of the external grounding terminals is set between at least one set of the external input/output terminals (11 and 12).Type: GrantFiled: January 4, 2002Date of Patent: March 11, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Publication number: 20020097102Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), has:Type: ApplicationFiled: January 4, 2002Publication date: July 25, 2002Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Publication number: 20020089392Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), has:Type: ApplicationFiled: January 4, 2002Publication date: July 11, 2002Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Publication number: 20020089390Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), has:Type: ApplicationFiled: January 4, 2002Publication date: July 11, 2002Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Patent number: 6396361Abstract: A non-reciprocal circuit element for transmitting a signal in one way or cyclically transmitting the signal by using circuit means having at least a ferrite (34), transmission lines (31, 32, and 33), and a capacitor (21), and has at least two external input/output terminals (11 and 12) for transferring a signal to and from an external unit and at least one of external grounding terminals (13, 14, and 15) for grounding, wherein at least one (13) of the external grounding terminals is set between at least one set of the external input/output terminals (11 and 12).Type: GrantFiled: September 24, 1999Date of Patent: May 28, 2002Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiko Horio, Takayuki Takeuchi, Masumi Hattori, Hiroyuki Hase
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Patent number: 6105225Abstract: A method of manufacturing a small, light, highly accurate and inexpensive thin film sensor element is disclosed. The thin film sensor element comprises a sensor holding substrate having an opening part and a multilayer film structure adhered thereon. The multilayer film structure comprises a first electrode film, a second electrode film, and a piezoelectric dielectric oxide film present between the first and second electrode films. The method of manufacturing the thin film sensor element comprises the steps of: forming the multilayer film structure by forming the first electrode film having a (100) plane orientation on a surface of an alkali halide substrate, forming the piezoelectric dielectric oxide thereon, and forming the second electrode film on the piezoelectric dielectric oxide; adhering the multilayer film structure on the surface of the sensor holding substrate having the opening part; and dissolving and removing the alkali halide substrate with water.Type: GrantFiled: February 9, 1996Date of Patent: August 22, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideo Torii, Takeshi Kamada, Shigenori Hayashi, Ryoichi Takayama, Takashi Hirao, Masumi Hattori
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Patent number: 5663089Abstract: A laminated thin film capacitor having a substrate, at least two electrode layers, at least one dielectric layer and a pair of external electrode which are placed on respective side walls of the capacitor, wherein the metal electrode layer and the dielectric layers are laminated alternately on the substrate, and every other metal electrode layers are exposed on each of side walls of the capacitor, which capacitor is excellent in dielectric properties such as a high capacity per unit volume.Type: GrantFiled: June 5, 1995Date of Patent: September 2, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Tomozawa, Eiji Fujii, Hideo Torii, Masumi Hattori, Satoru Fujii, Ryoichi Takayama
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Patent number: 5612536Abstract: A thin film sensor element includes a sensor holding substrate having an opening part and a multilayer film adhered thereon at least consisting of an electrode film A, an electrode film B having (100) plane orientation, and a piezoelectic dielectric oxide film present between the electrode film A and the electrode film B. As a result, a thin film sensor element which is small, light, highly accurate, and inexpensive can be attained which can be used for an acceleration sensor element and a pyroelectric infrared sensor element. On the surface of a flat plate KBr substrate, a rock-salt crystal structure oxide of a conductive NiO is formed by a plasma MOCVD method whose vertical direction is crystal-oriented to <100> direction against the substrate surface. By means of a sputtering method, a PZT film is formed by an epitaxial growth on that surface, and a Ni-Cr electrode film is formed thereon.Type: GrantFiled: January 19, 1995Date of Patent: March 18, 1997Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideo Torii, Takeshi Kamada, Shigenori Hayashi, Ryoichi Takayama, Takashi Hirao, Masumi Hattori
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Patent number: 5521454Abstract: A surface wave filter element includes a portion on which elastic surface waves propagate. This portion includes a piezoelectric material, an amorphous boron layer or plate and IDT electrodes for inputting and outputting signals. The piezoelectric material is a film made of ZnO, LiNbO.sub.3 or LiTaO.sub.3 formed by sputtering, ion beam deposition or chemical vapor deposition. The amorphous boron layer or boron plate may be formed on a substrate made of an inorganic material. The boron material is formed using electron beam deposition, ion beam deposition or chemical vapor deposition.Type: GrantFiled: September 9, 1994Date of Patent: May 28, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masumi Hattori, Hideo Torii, Masaki Aoki, Eiji Fujii, Atsushi Tomozawa, Ryoichi Takayama, Ken Kamata, Yasuhiko Horio
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Patent number: 5459635Abstract: A laminated thin film capacitor having a substrate, at least two electrode layers, at least one dielectric layer and a pair of external electrode which are placed on respective side walls of the capacitor, wherein the metal electrode layer and the dielectric layers are laminated alternately on the substrate, and every other metal electrode layers are exposed on each of side walls of the capacitor, which capacitor is excellent in dielectric properties such as a high capacity per unit volume.Type: GrantFiled: March 22, 1994Date of Patent: October 17, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Tomozawa, Eiji Fujii, Hideo Torii, Masumi Hattori, Satoru Fujii, Ryoichi Takayama
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Patent number: 5406445Abstract: A NaCl oxide thin layer oriented to (100) face or a spinel oxide thin layer oriented to (100) face, a perovskite dielectric thin layer oriented to (100) face and a metal electrode are sequentially laminated on a metal electrode, thus providing a thin film capacitor. Or alternatively, a thin film capacitor is manufactured by sequentially laminating a NaCl oxide thin layer oriented to (100) face or a spinel oxide thin layer oriented to (100) face, a platinum thin layer as a lower electrode oriented to (100) face, a perovskite dielectric thin layer oriented to (100) face and a metal thin layer as an upper electrode on a substrate. A plasma-enhanced CVD method is applied to form a NaCl oxide thin layer, a spinel oxide thin layer and a perovskite dielectric thin layer while a vacuum deposition method, a sputtering method, a CVD method or a plasma-enhanced CVD method is applied for the formation of a metal electrode.Type: GrantFiled: March 24, 1994Date of Patent: April 11, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Eiji Fujii, Atsushi Tomozawa, Hideo Torii, Masumi Hattori, Ryoichi Takayama, Satoru Fujii
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Patent number: 5378548Abstract: A magnetic recording medium, comprising; a 2-layer film formed on a glass disk substrate as an under layer composed of an amorphous oxide or NaCl oxides like a NiO or CoO and the like, or any soft magnetic oxide of Mn-Zn ferrite, Ni-Zn ferrite and the like, or a combination of those 2 materials; a magnetic recording medium formed thereon composed of a Co ferrite perpendicular magnetic film of a columnar structure; and a structure formed thereon with a lubricant layer medium. This magnetic recording medium is used for a magnetic rigid disk apparatus. The substrate is made by press-molding the glass plate at a high temperature. The under layer film and Co ferrite film are composed of vapors of organic material compounds and oxygen as their raw materials, and made by a plasma assisted CVD method.Type: GrantFiled: June 11, 1991Date of Patent: January 3, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideo Torii, Eiji Fujii, Masumi Hattori, Masaki Aoki, Kiyoshi Kuribayashi
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Patent number: 4323484Abstract: A glaze resistor composition composed of a glass frit, molybdenum disilicide, tantalum disilicide, magnesium silicide and aluminum. This glaze resistor composition has a small temperature coefficient of resistivity, a high resistivity stability and small current noises, and can be used in a wide resistivity range.Type: GrantFiled: November 23, 1979Date of Patent: April 6, 1982Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masumi Hattori, Toru Ishida, Shinichi Tanaka
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Patent number: 4119573Abstract: A glaze resistor composition composed of magnesium silicide, molybdenum disilicide, tantalum disilicide and glass frit, and if necessary, manganese disilicide and/or aluminum oxide. Due to the use of magnesium silicide, glaze resistors having stable resistivities in a wide resistivity range can be obtained. Due to the use of manganese disilicide, the temperature coefficient of resistivity can be shifted to the positive side, and due to the use of aluminum oxide, the resistivity can be increased and made more stable. This invention also provides a method of making a glaze resistor using two heating steps, in which aluminum oxide is mixed in the starting powder mixture to be subjected to the first heating step, so as to enhance the effect of the aluminum oxide addition.Type: GrantFiled: October 27, 1977Date of Patent: October 10, 1978Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toru Ishida, Masumi Hattori, Shinichi Tanaka, Tomi Sato, Kenji Kuwahara