Patents by Inventor Yasutaka Takahashi
Yasutaka Takahashi 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: 20240154509Abstract: A rotary reciprocating drive actuator includes an assembled magnetic member has a rectangular shape surrounding the movable member in a plane orthogonal to the axis direction, the core extends in the X direction along one edge of the rectangular shape, and the pair of core parts respectively extend in the Y direction along a pair of opposing edges of the rectangular shape that are different from the one edge, the assembled magnetic member including the pair of magnetic poles, the pair of core parts around which the pair of coils are respectively wound, and the core at which the rotation angle position holding part is disposed, and winding axes of the pair of coils extend along the Y direction.Type: ApplicationFiled: January 12, 2024Publication date: May 9, 2024Applicant: MITSUMI ELECTRIC CO., LTD.Inventors: Yuki TAKAHASHI, Yasutaka KITAMURA, Masaharu KAGAMI, Shigenori INAMOTO
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Patent number: 11936250Abstract: A movable magnet is configured by alternately magnetizing an even number of magnetic poles at an outer periphery of a shaft part; a number of core magnetic poles as magnetic poles of a core body and a number of magnetic poles of the movable magnet are equal to each other; the core magnetic poles are disposed to face the movable magnet with an air gap therebetween on an outer peripheral side of the movable magnet in a direction orthogonal to the shaft part; a drive unit is provided with a magnet position holding part provided to face the movable magnet and magnetically attracts the movable magnet to a reference position; the core body is formed to surround an even number of the core magnetic poles; and a coil body is disposed at the core body adjacent to each of the even number of the core magnetic poles.Type: GrantFiled: August 5, 2021Date of Patent: March 19, 2024Assignee: MITSUMI ELECTRIC CO., LTD.Inventors: Yasutaka Kitamura, Yuki Takahashi, Masaharu Kagami, Yuki Otsuka
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Patent number: 8295695Abstract: A lens barrel includes: a lens holding member that holds a lens; a drive coil attached to an outer peripheral portion of the lens holding member; a magnet attached to face the drive coil; a barrel member in which the lens holding member is disposed; and a cover member attached to the barrel member with the lens on a light incident side of the lens holding member facing to an outside. The cover member is magnetic, and the magnet is directly attached to the cover member at a position acing the drive coil.Type: GrantFiled: July 15, 2010Date of Patent: October 23, 2012Assignee: Sony CorporationInventors: Kyosuke Yoshida, Yasutaka Takahashi, Fumihiko Fujishiro
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Patent number: 7990635Abstract: A lens holding member (30) is molded by filling a molten synthetic resin from a gate of a mold into a product cavity, and a portion corresponding to the gate of the mold for molding remains thereon as a gate portion (72). By mounting a coil (52) on a rear cylindrical face (60), an adhesive filling recess (70) that opens in a direction parallel to an optical axis of an image pickup optical system (28) is defined by a center face (66), side faces (68) standing from both sides of the center face (66), an outer face (58), and an inner peripheral surface of the coil (52). The gate portion (72) is provided on the center face (66) of the adhesive filling recess (70). By filling the adhesive filling recess (74) with adhesive B, an outer peripheral portion of the lens holding member (30) and an inner peripheral portion of the coil (52) are bonded together, and the gate portion (72) is buried in the adhesive B.Type: GrantFiled: January 22, 2009Date of Patent: August 2, 2011Assignee: Sony CorporationInventors: Takahiro Okabe, Yasutaka Takahashi, Noritoshi Eguchi, Mitsuru Ichikawa, Satoshi Imai
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Publication number: 20110044679Abstract: A lens barrel includes: a lens holding member that holds a lens; a drive coil attached to an outer peripheral portion of the lens holding member; a magnet attached to face the drive coil; a barrel member in which the lens holding member is disposed; and a cover member attached to the barrel member with the lens on a light incident side of the lens holding member facing to an outside. The cover member is magnetic, and the magnet is directly attached to the cover member at a position acing the drive coil.Type: ApplicationFiled: July 15, 2010Publication date: February 24, 2011Applicant: Sony CorporationInventors: Kyosuke Yoshida, Yasutaka Takahashi, Fumihiko Fujishiro
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Patent number: 7864461Abstract: A camera module includes a rear lens barrel, a front lens barrel assembled to the rear lens barrel, the front lens barrel and the rear lens barrel together forming a housing space, a lens holder that holds an imaging optical system and is housed in the housing space, a guiding mechanism that movably supports the lens holder along the optical axis of the imaging optical system, and a driving unit that moves the lens holder along the optical axis of the imaging optical system, the driving unit including a magnet provided in the lens holder and a coil that faces the magnet. The rear lens barrel has a bottom wall that faces the housing space. The coil includes first and second coils disposed in the rear lens barrel on opposite sides of the optical axis in the housing space.Type: GrantFiled: March 4, 2009Date of Patent: January 4, 2011Assignee: Sony CorporationInventors: Satoru Yoshioka, Takahiro Okabe, Masashi Nishimoto, Yasutaka Takahashi, Mitsuru Ichikawa, Satoshi Imai
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Publication number: 20100142066Abstract: A lens holding member (30) is molded by filling a molten synthetic resin from a gate of a mold into a product cavity, and a portion corresponding to the gate of the mold for molding remains thereon as a gate portion (72). By mounting a coil (52) on a rear cylindrical face (60), an adhesive filling recess (70) that opens in a direction parallel to an optical axis of an image pickup optical system (28) is defined by a center face (66), side faces (68) standing from both sides of the center face (66), an outer face (58), and an inner peripheral surface of the coil (52). The gate portion (72) is provided on the center face (66) of the adhesive filling recess (70). By filling the adhesive filling recess (74) with adhesive B, an outer peripheral portion of the lens holding member (30) and an inner peripheral portion of the coil (52) are bonded together, and the gate portion (72) is buried in the adhesive B.Type: ApplicationFiled: January 22, 2009Publication date: June 10, 2010Inventors: Takahiro Okabe, Yasutaka Takahashi, Noritoshi Eguchi, Mitsuru Ichikawa
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Publication number: 20090225454Abstract: A camera module includes a rear lens barrel, a front lens barrel assembled to the rear lens barrel, the front lens barrel and the rear lens barrel together forming a housing space, a lens holder that holds an imaging optical system and is housed in the housing space, a guiding mechanism that movably supports the lens holder along the optical axis of the imaging optical system, and a driving unit that moves the lens holder along the optical axis of the imaging optical system, the driving unit including a magnet provided in the lens holder and a coil that faces the magnet. The rear lens barrel has a bottom wall that faces the housing space. The coil includes first and second coils disposed in the rear lens barrel on opposite sides of the optical axis in the housing space.Type: ApplicationFiled: March 4, 2009Publication date: September 10, 2009Inventors: Satoru YOSHIOKA, Takahiro OKABE, Masashi NISHIMOTO, Yasutaka TAKAHASHI, Mitsuru ICHIKAWA, Satoshi IMAI
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Publication number: 20070203042Abstract: The problems are to provide a composition for dispersing a particle that exhibits excellent dispersing effects as to various particle suspensions and leads no environmental loadings, a composition having a particle stably dispersed therein and a process for producing the same, and a sintered compact of anatase-type titanium oxide. The composition for dispersing of a particle of the present invention is characterized in being obtained by mixing a metal alkoxide containing a metal element having +3 to 5 valence (for example, titanium or the like), an organic acid (for example, lactic acid or the like) and water. The composition having a particle dispersed therein of the present invention is characterized in being comprising a particle (for example, an oxide particle or the like), the above composition for dispersing of a particle.Type: ApplicationFiled: March 17, 2005Publication date: August 30, 2007Applicant: Toyo Ink. Mfg. Co., Ltd.Inventors: Osamu Sakurada, Minoru Hashiba, Yasutaka Takahashi, Tomokazu Ohya, Masaaki Saito
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Patent number: 6770216Abstract: A method is disclosed for producing a titanium-containing aqueous solution by reacting a titanium alkoxide with water in the presence of at least one of ammonia, and amines selected from a primary amine, a secondary amine, and a tertiary amine, provided that when ammonia and/or the primary amine only is used, at least one selected from the group consisting of an &agr;-diketone, a &bgr;-diketone, an &agr; hydroxyketone and a carboxylic acid is used in combination.Type: GrantFiled: May 10, 2001Date of Patent: August 3, 2004Assignee: Gifu UniversityInventors: Yasutaka Takahashi, Yutaka Oya, Takayuki Ban
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Patent number: 6436479Abstract: Disclosed is a method of forming a nickel metal thin film, comprising the steps of coating a substrate with a solution for forming a nickel metal thin film, the solution being formed of an alcohol solution containing nickel ions and a reducible chelate type ligand having a hydrazone unit so as to form a gel film, and subjecting the resultant gel film to a heat treatment under an inert gas atmosphere.Type: GrantFiled: December 13, 2000Date of Patent: August 20, 2002Assignee: President of Gifu UniversityInventors: Yasutaka Takahashi, Yutaka Ohya, Takayuki Ban
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Publication number: 20020000532Abstract: A method is disclosed for producing a titanium-containing aqueous solution by reacting a titanium alkoxide with water in the presence of at least one of ammonia, and amines selected from a primary amine, a secondary amine, and a tertiary amine, provided that when ammonia and/or the primary amine only is used, at least one selected from the group consisting of an &agr;-diketone, a &bgr;-diketone, an &agr; hydroxyketone and a carboxylic acid is used in combination.Type: ApplicationFiled: May 10, 2001Publication date: January 3, 2002Inventors: Yasutaka Takahashi, Yutaka Oya, Takayuki Ban
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Publication number: 20010012542Abstract: Disclosed is a method of forming a nickel metal thin film, comprising the steps of coating a substrate with a solution for forming a nickel metal thin film, the solution being formed of an alcohol solution containing nickel ions and a reducible chelate type ligand having a hydrazone unit so as to form a gel film, and subjecting the resultant gel film to a heat treatment under an inert gas atmosphere.Type: ApplicationFiled: December 13, 2000Publication date: August 9, 2001Inventors: Yasutaka Takahashi, Yutaka Ohya, Takayuki Ban