Patents by Inventor Masayuki Inagaki
Masayuki Inagaki 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: 6975200Abstract: A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.Type: GrantFiled: January 12, 2005Date of Patent: December 13, 2005Assignee: FDK CorporationInventors: Fumiaki Nakao, Yasuo Yamashita, Teruo Kiyomiya, Tetsuya Suzuki, Masayuki Inagaki, Mikio Kitaoka
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Publication number: 20050134420Abstract: A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.Type: ApplicationFiled: January 12, 2005Publication date: June 23, 2005Applicant: FDK CorporationInventors: Fumiaki Nakao, Yasuo Yamashita, Teruo Kiyomiya, Tetsuya Suzuki, Masayuki Inagaki, Mikio Kitaoka
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Patent number: 6885278Abstract: A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.Type: GrantFiled: July 22, 2003Date of Patent: April 26, 2005Assignee: FDK CorporationInventors: Fumiaki Nakao, Yasuo Yamashita, Teruo Kiyomiya, Tetsuya Suzuki, Masayuki Inagaki, Mikio Kitaoka
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Patent number: 6800215Abstract: A Ni type ferrite material of a low magnetic loss. The Ni type ferrite material is formed by adding MnO2 in an amount of 0.1 to 10 mol % to a ferrite material of a composition containing Fe2O3 in 40 to 50 mol %, ZnO in 20 to 33 mol %, CuO in 2 to 10 mol %, and NiO in the remainder. Such Ni type ferrite material is adapted for use in a coil component as a core material because of a smaller magnetic loss in comparison with a prior material, and has a high electric resistance to allow direct coil winding on the core, thereby realizing reduction in both size and weight of the coil component.Type: GrantFiled: May 23, 2003Date of Patent: October 5, 2004Assignee: FDK CorporationInventors: Masayuki Inagaki, Yoshio Matsuo, Toshiaki Tomozawa
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Publication number: 20040140877Abstract: A surface-mount microconverter is formed by mounting a microinductor chip and a semiconductor integrated circuit chip on a circuit board. Stud terminals are arranged on the circuit board and the microinductor chip is supported on the stud terminals, and the microinductor chip and the semiconductor integrated circuit chip are superposed on the circuit board. The microconverter has an improved ability and is small and thin. The microconverter includes an effective laminated magnetic-core inductor. The inductor comprises a helical coil formed by uniting alternately superposed insulating magnetic layers and conductive pattern layers, and an annular closed magnetic path formed by the insulating magnetic layers and defining a magnetic field created by the coil. The inductor can be miniaturized in a thin chip, and a wide range in which magnetic flux density varies linearly can be secured by balancing a closed magnetic path for a magnetic field created by the coil.Type: ApplicationFiled: July 22, 2003Publication date: July 22, 2004Inventors: Fumiaki Nakao, Yasuo Yamashita, Teruo Kiyomiya, Tetsuya Suzuki, Masayuki Inagaki, Mikio Kitaoka
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Publication number: 20040031946Abstract: A Ni type ferrite material of a low magnetic loss. The Ni type ferrite material is formed by adding MnO2 in an amount of 0.1 to 10 mol % to a ferrite material of a composition containing Fe2O3 in 40 to 50 mol %, ZnO in 20 to 33 mol %, CuO in 2 to 10 mol %, and NiO in the remainder. Such Ni type ferrite material is adapted for use in a coil component as a core material because of a smaller magnetic loss in comparison with a prior material, and has a high electric resistance to allow direct coil winding on the core, thereby realizing reduction in both size and weight of the coil component.Type: ApplicationFiled: May 23, 2003Publication date: February 19, 2004Inventors: Masayuki Inagaki, Yoshio Matsuo, Toshiaki Tomozawa
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Publication number: 20010011354Abstract: An information provision control system is provided whereby preferential information can be provided only to the employees of an affiliated enterprise, using an Internet home page. An authentication server stores the domain names of terminals of affiliated parties who are permitted to obtain information stored in a contents server. Moreover, the authentication server, when the contents server is accessed, compares the domain name of the accessed terminal with stored domain names of terminals of affiliated parties, and judges if the terminal is the terminal of an affiliated party. A member management server, in the case where the terminal is the terminal of the affiliated party, limits the range of information to be provided according to the affiliated party.Type: ApplicationFiled: February 1, 2001Publication date: August 2, 2001Inventors: Masayuki Inagaki, Eiichi Yoshikawa, Toshimitsu Ushijima, Toshihiko Handa, Masami Hayasi, Osamu Mikami
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Patent number: 5986035Abstract: Provided is a high-molecular weight high-ortho novolak type phenolic resin excellent in handleability, heat resistance characteristics, curability and electric characteristics suitable for various uses and superior in balance of properties. This high-molecular weight high-ortho novolak type phenolic resin is a condensate of a trifunctional phenol compound with an aldehyde compound, is soluble in solvents, has a weight-average molecular weight of 50,000 or more calculated by polystyrene standard, has methylene bonds at ortho-ortho position in respect to phenolic hydroxyl group in an amount of 55% or more based on total methylene bonds, and has an extraction water electric conductivity of 10 .mu.S/cm or less.Type: GrantFiled: April 9, 1998Date of Patent: November 16, 1999Assignee: Sumitomo Bakelite Company LimitedInventors: Masayuki Inagaki, Shoji Tomita
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Patent number: 5211046Abstract: An apparatus of and a method for forming a multistage hollow pipe comprising the steps of arranging a hollow pipe on a plurality of molds composed of an upper mold, first, second, third forming molds for subjecting the hollow pipe to drawing process, axially applying a compressive force, which is greater than the force forming multistage bulges on the hollow pipe, to the hollow pipe for forming the multistage hollow pipe, removing the processed multistage hollow pipe and other molds from the first forming mold, releasing the clamping of the processed multistage hollow pipe by the second and the third forming molds, and taking out the processed multistage hollow pipe.Type: GrantFiled: May 7, 1991Date of Patent: May 18, 1993Assignee: Kyosan Denki Kabushiki KaishaInventor: Masayuki Inagaki