Patents by Inventor Tatsuro Usuki
Tatsuro Usuki 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: 6828879Abstract: The present invention provides an unbalanced input and balanced output type SAW filter capable of obtaining stop-band attenuation approximately equivalent to that of an unbalanced input and unbalanced output type SAW filter. IDTs (12) (13) are respectively disposed on each side of a middle IDT (11). A comb electrode (11c) of the middle IDT (11) is connected with an input terminal (In) and other comb electrode (11b) is grounded. A comb electrode (12c) of the IDT (12) and a comb electrode (13b) of the IDT (13) are respectively connected with output terminals (Out 1) and (Out 2), and other comb electrode (12b) of the IDT (12) and other comb electrode (13c) of the IDT (13) are connected to each other and grounded.Type: GrantFiled: February 14, 2002Date of Patent: December 7, 2004Assignee: Sanyo Electric Co., Ltd.Inventors: Naoki Tanaka, Tatsuro Usuki
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Patent number: 6781483Abstract: In the surface acoustic wave filter, a longitudinally-coupled double-mode resonator filter formed by arranging a plurality of inter-digital transducers for exciting and receiving a surface acoustic wave adjacent each other in the direction of propagation of the surface acoustic wave is connected in series to a resonator having one or a plurality of inter-digital transducers for exciting and receiving a surface acoustic wave. A cutoff frequency on the high-frequency side of the pass band of the longitudinally-coupled double-mode resonator filter and the antiresonant frequency of the resonator are substantially equal. In the surface acoustic wave filter, the sharpness in the vicinity of the cutoff frequency on the high-frequency side of the pass band is high, sufficient attenuation can be obtained, and the input and output impedance matching state is good.Type: GrantFiled: December 13, 2001Date of Patent: August 24, 2004Assignee: Sanyo Electric Co., Ltd.Inventors: Naoki Tanaka, Tatsuro Usuki
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Patent number: 6703130Abstract: A substrate coated with a transparent conductive film is manufactured by: disposing a substrate 3 and a target 5 constituted of alloy of In and Sn in a film deposition chamber 1; leading an Ar gas ion beam into the film deposition chamber 1, to cause collision of the ion beam with the target 5, sputtering-emission of constitutive atoms of the target 5, and supply of the emitted atoms to the substrate 3; and leading oxide gas including oxygen radicals as a main element thereof from an ECR radical source 6 into the film deposition chamber 1, to deposit an ITO film 9 on the substrate 3. In this manufacturing method, a film is deposited on a film or substrate including an organic material without damaging the organic material. The deposited film has low resistivity, high transmission and preferable flatness.Type: GrantFiled: September 5, 2002Date of Patent: March 9, 2004Assignee: Sanyo Electric Co., Ltd.Inventors: Morio Ogura, Tatsuro Usuki
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Patent number: 6624570Abstract: An electroluminescent display device is increased in size by securing plural small-size panels, each incorporating plural electroluminescent elements, to a large-size support with an intervening adhesive layer.Type: GrantFiled: September 29, 2000Date of Patent: September 23, 2003Assignee: Sanyo Electric Co., Ltd.Inventors: Yoshitaka Nishio, Junichi Sano, Hisakazu Takahashi, Tatsuro Usuki
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Patent number: 6617785Abstract: A large-sized organic EL display unit is formed by bonding four small display panels on junction surfaces so that the pitch between emission parts adjacent to each other over the small display panels is equal to the pitch between the emission parts in the small display panels, so that the junction between the adjacent ones of the small electroluminescence display panels is inconspicuous.Type: GrantFiled: December 18, 2000Date of Patent: September 9, 2003Assignee: Sanyo Electric Co. Ltd.Inventors: Kenichi Shibata, Tatsuro Usuki, Kiyoshi Yoneda, Haruhisa Hashimoto, Hisao Haku
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Patent number: 6576566Abstract: A thin film formation apparatus includes a vacuum chamber, a target holding mount held movably in the vacuum chamber, a target containing a film material, an ArF excimer laser for emitting high energy radiation to a surface of the target, an optical system for concentrating the radiation from the excimer laser to the surface of the target, a substrate holding mount holding the substrate, an oxidizing gas inlet for supplying an oxidizing gas into the vacuum chamber for oxidizing a substance deposited on the substrate, a heater placed inside the substrate holding mount for heating the substrate in the vacuum chamber, and a light for irradiating the substrate held on the substrate holding mount with light rays.Type: GrantFiled: May 30, 2001Date of Patent: June 10, 2003Assignees: Matshushita Electric Industrial Co., Ltd., Hochiki Corporation, Murata Manufacturing Co., Ltd., Sanyo Electric Co., Ltd.Inventors: Kazuhiko Hashimoto, Tomonori Mukaigawa, Ryuichi Kubo, Hiroyuki Kishihara, Tatsuro Usuki, Minoru Noda, Masanori Okuyama
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Publication number: 20030059625Abstract: A substrate coated with a transparent conductive film is manufactured by: disposing a substrate 3 and a target 5 constituted of alloy of In and Sn in a film deposition chamber 1; leading an Ar gas ion beam into the film deposition chamber 1, to cause collision of the ion beam with the target 5, sputtering-emission of constitutive atoms of the target 5, and supply of the emitted atoms to the substrate 3; and leading oxide gas including oxygen radicals as a main element thereof from an ECR radical source 6 into the film deposition chamber 1, to deposit an ITO film 9 on the substrate 3. In this manufacturing method, a film is deposited on a film or substrate including an organic material without damaging the organic material. The deposited film has low resistivity, high transmission and preferable flatness.Type: ApplicationFiled: September 5, 2002Publication date: March 27, 2003Applicant: SANYO ELECTRIC CO., LTD.Inventors: Morio Ogura, Tatsuro Usuki
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Publication number: 20020113668Abstract: The present invention provides an unbalanced input and balanced output type SAW filter capable of obtaining stop-band attenuation approximately equivalent to that of an unbalanced input and unbalanced output type SAW filter. IDTs (12) (13) are respectively disposed on each side of a middle IDT (11). A comb electrode (11c) of the middle IDT (11) is connected with an input terminal (In) and other comb electrode (11b) is grounded. A comb electrode (12c) of the IDT (12) and a comb electrode (13b) of the IDT (13) are respectively connected with output terminals (Out 1) and (Out 2), and other comb electrode (12b) of the IDT (12) and other comb electrode (13c) of the IDT (13) are connected to each other and grounded.Type: ApplicationFiled: February 14, 2002Publication date: August 22, 2002Applicant: Sanyo Electric Co., Ltd.Inventors: Naoki Tanaka, Tatsuro Usuki
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Publication number: 20020075102Abstract: In the surface acoustic wave filter, a longitudinally-coupled double-mode resonator filter formed by arranging a plurality of inter-digital transducers for exciting and receiving a surface acoustic wave adjacent each other in the direction of propagation of the surface acoustic wave is connected in series to a resonator having one or a plurality of inter-digital transducers for exciting and receiving a surface acoustic wave. A cutoff frequency on the high-frequency side of the pass band of the longitudinally-coupled double-mode resonator filter and the antiresonant frequency of the resonator are substantially equal. In the surface acoustic wave filter, the sharpness in the vicinity of the cutoff frequency on the high-frequency side of the pass band is high, sufficient attenuation can be obtained, and the input and output impedance matching state is good.Type: ApplicationFiled: December 13, 2001Publication date: June 20, 2002Applicant: SANYO ELECTRIC CO., LTD.Inventors: Naoki Tanaka, Tatsuro Usuki
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Patent number: 6387546Abstract: In an organic electroluminescent device having a carrier transport layer and an emitting layer which are composed of an organic material provided between a hole injection electrode and an electron injection electrode, a dopant for transporting carriers is doped into the carrier transport layer and/or a dopant for transporting carriers or moving excitation energy is doped into the emittingType: GrantFiled: May 18, 1999Date of Patent: May 14, 2002Assignee: Sanyo Electric Co., Ltd.Inventors: Yuji Hamada, Hiroshi Kanno, Tsuyoshi Tsujioka, Tatsuro Usuki
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Publication number: 20020004266Abstract: A thin film formation apparatus includes a vacuum chamber, a target holding mount held movably in the vacuum chamber, a target containing a film material, an ArF excimer laser for emitting high energy radiation to a surface of the target, an optical system for concentrating the radiation from the excimer laser to the surface of the target, a substrate holding mount holding the substrate, an oxidizing gas inlet for supplying an oxidizing gas into the vacuum chamber for oxidizing a substance deposited on the substrate, a heater placed inside the substrate holding mount for heating the substrate in the vacuum chamber, and a light for irradiating the substrate held on the substrate holding mount with light rays.Type: ApplicationFiled: May 30, 2001Publication date: January 10, 2002Inventors: Kazuhiko Hashimoto, Tomonori Mukaigawa, Ryuichi Kubo, Hiroyuki Kishihara, Tatsuro Usuki, Minoru Noda, Masanori Okuyama
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Publication number: 20010013848Abstract: A large-sized organic EL display unit is formed by bonding four small display panels on junction surfaces so that the pitch between emission parts adjacent to each other over the small display panels is equal to the pitch between the emission parts in the small display panels, so that the junction between the adjacent ones of the small electroluminescence display panels is inconspicuous.Type: ApplicationFiled: December 18, 2000Publication date: August 16, 2001Inventors: Kenichi Shibata, Tatsuro Usuki, Kiyoshi Yoneda, Haruhisa Hashimoto, Hisao Haku
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Patent number: 5914645Abstract: In a surface acoustic wave device comprising a substrate of lithium tantalate or lithium niobate, and interdigital electrodes formed on the substrate and made of a thin film consisting primarily of aluminum, the interdigital electrodes are optimized in the ratio of the thickness of the film to the period of a plurality of electrode digits connected to a common terminal with propagation loss taken as an objective function. The ratio is set in the range of 0.03 to 0.10 to ensure a lower propagation loss than in the prior art.Type: GrantFiled: June 4, 1997Date of Patent: June 22, 1999Assignee: Sanyo Electric Co., Ltd.Inventors: Yasumi Kobayashi, Kuniyuki Matsui, Naoki Tanaka, Hiroshi Okano, Tatsuro Usuki, Kenichi Shibata
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Patent number: 5219834Abstract: The present invention provides a process for producing a superconducting transistor on a surface of an insulating substrate. A pre-superconducting thin film contains a material that can be changed into a superconductor during subsequent processing but which is initially a non-superconductor. A thin film containing the material required by the pre-superconducting thin film is deposited in a preferred pattern on the pre-superconducting thin film. The assembly thus formed is heat treated to permit the material from the thin film to enter the pre-superconducting thin film, thereby forming superconducting regions in the pre-superconducting thin film in the preferred pattern. The superconducting regions form electrodes of the transistor.Type: GrantFiled: May 21, 1990Date of Patent: June 15, 1993Assignee: Sanyo Electric Co., Ltd.Inventors: Tatsuro Usuki, Hiroshi Suzuki, Ichiro Yasui, Yorinobu Yoshisato