Patents by Inventor Shinichiro Chiku
Shinichiro Chiku 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: 11862371Abstract: A magnetic structural body contains core-shell structure particles each including a core section and a shell section covering the surface of the core section. The core section is made of an alloy containing a first metal and a second metal. The shell section is made of an alloy which contains the first metal and the second metal and which has a first metal-to-second metal content ratio different from that of the core section. The first metal is a magnetic metal and has a standard redox potential higher than that of the second metal. The neighboring core-shell structure particles are linearly linked to each other.Type: GrantFiled: August 10, 2020Date of Patent: January 2, 2024Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichiro Chiku, Takenori Sekijima
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Publication number: 20200373062Abstract: A magnetic structural body contains core-shell structure particles each including a core section and a shell section covering the surface of the core section. The core section is made of an alloy containing a first metal and a second metal. The shell section is made of an alloy which contains the first metal and the second metal and which has a first metal-to-second metal content ratio different from that of the core section. The first metal is a magnetic metal and has a standard redox potential higher than that of the second metal. The neighboring core-shell structure particles are linearly linked to each other.Type: ApplicationFiled: August 10, 2020Publication date: November 26, 2020Applicant: Murata Manufacturing Co., Ltd.Inventors: Shinichiro CHIKU, Takenori SEKIJIMA
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Patent number: 10261182Abstract: A light-emitting element and a light-receiving element are provided on a surface of a substrate. The light-emitting element and the light-receiving element are sealed by transparent resin members and, respectively. A lens is provided at the transparent resin member at a position above the light-emitting element. The center of the lens and a mounting position of the light-emitting element are disposed being shifted from each other. With this, an optical axis of light outputted via the lens is slanted toward an opposite direction side with respect to the light-receiving element at a predetermined elevation angle. In this case, a beam divergence angle of light outputted from the lens is set to a predetermined value.Type: GrantFiled: April 3, 2015Date of Patent: April 16, 2019Assignee: MURATA MANUFACTURING CO., LTD.Inventors: Kaname Hanada, Shinichiro Chiku, Tsutomu Yamasaki, Tomiya Sonoda
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Publication number: 20150212208Abstract: A light-emitting element and a light-receiving element are provided on a surface of a substrate. The light-emitting element and the light-receiving element are sealed by transparent resin members and, respectively. A lens is provided at the transparent resin member at a position above the light-emitting element. The center of the lens and a mounting position of the light-emitting element are disposed being shifted from each other. With this, an optical axis of light outputted via the lens is slanted toward an opposite direction side with respect to the light-receiving element at a predetermined elevation angle. In this case, a beam divergence angle of light outputted from the lens is set to a predetermined value.Type: ApplicationFiled: April 3, 2015Publication date: July 30, 2015Inventors: Kaname Hanada, Shinichiro Chiku, Tsutomu Yamasaki, Tomiya Sonoda
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Patent number: 7999983Abstract: An optical material includes lithium tantalate, and a molar composition ratio of lithium oxide and tantalum oxide (Li2O/Ta2O5) in the lithium tantalate is in the range of 0.975 to 0.982. Since an optical material having a high refractive index is provided in an optical unit, at the same focal distance, a lens thickness can be significantly reduced. As a result, an optical electronic component and an optical electronic device including the optical material has a reduced size and thickness and is highly functional.Type: GrantFiled: October 13, 2004Date of Patent: August 16, 2011Assignee: National Institute for Materials ScienceInventors: Makoto Kumatoriya, Shinichiro Chiku, Mikio Geho, Takashi Fujii, Kenji Kitamura, Shunji Takekawa, Masaru Nakamura
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Publication number: 20090108232Abstract: An optical material includes lithium tantalate, and a molar composition ratio of lithium oxide and tantalum oxide (Li2O/Ta2O5) in the lithium tantalate is in the range of 0.975 to 0.982. Since an optical material having a high refractive index is provided in an optical unit, at the same focal distance, a lens thickness can be significantly reduced. As a result, an optical electronic component and an optical electronic device including the optical material has a reduced size and thickness and is highly functional.Type: ApplicationFiled: October 13, 2004Publication date: April 30, 2009Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCEInventors: Makoto KUMATORIYA, Shinichiro CHIKU, Mikio GEHO, Takashi FUJII, Kenji KITAMURA, Shunji TAKEKAWA, Masaru NAKAMURA
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Patent number: 6646783Abstract: A light modulation device comprises: a magnetic garnet single crystal having a main surface and an easy magnetization axis in parallel with the main surface; an optical source arranged such that light emitted from the optical source is introduced into the magnetic garnet single crystal and propagates in the magnetic garnet single crystal along a first direction on the main surface; and one or a pair of transducers provided on the main surface of the magnetic garnet single crystal for applying a microwave signal in a region of the magnetic garnet single crystal where the light from the optical source propagates, to modulate the light.Type: GrantFiled: December 7, 1999Date of Patent: November 11, 2003Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichiro Chiku, Takashi Fujii
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Patent number: 6462857Abstract: An optical modulator includes a magnetic ferrite single crystal, an optical source, a photoreceptor system and an analyzer. The magnetic ferrite single crystal has a transducer mounted and arranged to receive a microwave. The microwave is modulated by a signal having a frequency lower than the microwave. Light emitted from the optical source is introduced to the magnetic garnet single crystal and modulated by the microwave applied to the transducer. The photoreceptor system receives the modulated light that is emitted from the magnetic ferrite single crystal. The analyzer is provided between the magnetic ferrite single crystal and the photoreceptor system, and the analyzer is arranged such that a rotation angle of the analyzer about an optical axis thereof is shifted by an angle in the range of about 40 degrees to about 50 degrees from an extinct position at which an amount of direct-current light transmitted through analyzer is minimized.Type: GrantFiled: January 17, 2001Date of Patent: October 8, 2002Assignee: Murata Manufacturing Co., Ltd.Inventors: Shinichiro Chiku, Takashi Fujii
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Publication number: 20010008456Abstract: An optical modulator includes a magnetic ferrite single crystal, an optical source, a photoreceptor system and an analyzer. The magnetic ferrite single crystal has a transducer mounted thereon and arranged to receive a microwave. The microwave is modulated by a signal having a frequency lower than the microwave. The optical source is arranged such that light emitted from the optical source is introduced to the magnetic garnet single crystal and modulated by the microwave applied to the transducer. The photoreceptor system is arranged so as to receive the modulated light that is emitted from the magnetic ferrite single crystal. The analyzer is provided between the magnetic ferrite single crystal and the photoreceptor system, and the analyzer is arranged such that a rotation angle of the analyzer about an optical axis thereof is shifted by an angle in the range of about 40 degrees to about 50 degrees from an extinct position at which an amount of direct-current light transmitted through analyzer is minimized.Type: ApplicationFiled: January 17, 2001Publication date: July 19, 2001Applicant: Murata Manufacturing Co., Ltd.Inventors: Shinichiro Chiku, Takashi Fujii