Patents by Inventor Hiromitsu Taki
Hiromitsu Taki 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: 5495395Abstract: A module substrate consists of a substrate mounting electronic parts on one surface thereof, a conductor for electrically conducting the electronic parts mounted on the substrate to the other surface of the substrate, a conductive solder for attaching the conductor to a base substrate movably contacting the other surface of the substrate to electrically connect the electronic parts with the base substrate, and a deformable bushing for holding the conductor to maintain the attachment of the conductor to the base substrate regardless of whether the base substrate is moved.Type: GrantFiled: September 24, 1992Date of Patent: February 27, 1996Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takehiko Yoneda, Masahiro Yoshimoto, Yoshihiko Takayama, Tetsjhi Tsujhi, Hiromitsu Taki
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Patent number: 5420745Abstract: A surface-mount type ceramic capacitor particularly suitable for use in an intermediate to high tension circuit is disclosed, wherein lead terminals are spaced from a dielectric ceramic substrate except for a portion joined with electrodes. With this spaced arrangement, the ceramic capacitor has a high electric breakdown strength and an improved heat-resisting property and, hence, is capable of operating reliably over a long period of use.Type: GrantFiled: May 13, 1994Date of Patent: May 30, 1995Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akio Hidaka, Jirou Oota, Katsumi Sasaki, Hiromitsu Taki, Noriya Satou
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Patent number: 5276412Abstract: A high-frequency filter of the type having a plurality of resonators open at least at one end thereof, a dielectric board forming an input/output coupling and an interstage coupling, and a case for holding therein the resonators and the dielectric board, wherein the dielectric board is made of a ceramic having a critical stress intensity factor K.sub.1c of not less than 5 MPa.multidot.m.sup.1/2 and a dielectric dissipation factor tan. .delta. of not exceeding 1% in a working frequency band of said high-frequency filter, and wherein electrodes are provided on the dielectric board to form an input/output coupling capacity and an interstage coupling capacity. The high-frequency filter of the foregoing construction has the advantage of an excellent mechanical strength which is capable of withstanding severe mechanical loads such as falling impacts or various stresses.Type: GrantFiled: May 29, 1992Date of Patent: January 4, 1994Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takehiko Yoneda, Kazuhiro Eguchi, Hiromitsu Taki
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Patent number: 5256639Abstract: A dielectric ceramic composition represented by the compositional formula: .sub.x BaO-.sub.y TiO.sub.2 -.sub.z Nd.sub.2 O.sub.3 -.sub.t Sm.sub.2 O.sub.3 -.sub.w Bi.sub.2 O.sub.3 so composed as to be in the molar fractions of 0.06.ltoreq.x.ltoreq.0.25, 0.60.ltoreq.y.ltoreq.0.80, 0.05.ltoreq.z.ltoreq.0.18, 0<t.ltoreq.0.07 and 0<w.ltoreq.0.05, provided that x+y+z+t+w=1, and a compositional range of Y<0.68 and Z>0.15 is excluded. As an additive, at least one of Al.sub.2 O.sub.3, ZrO.sub.2, etc. may be added. Part of Ba may be replaced with at least one of Sr, Ca and Mg. The Sm.sub.2 O.sub.3 and Nd.sub.2 O.sub.3 each may have a purity of at least 70 wt. %.Type: GrantFiled: September 21, 1992Date of Patent: October 26, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takuya Fujimaru, Takehiko Yoneda, Hiromi Tokunaga, Hiromitsu Taki
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Patent number: 5248949Abstract: A flat type dielectric filter comprises a substantially U-shaped strip line formed such that each center frequency of spurious output deviates from each odd number frequency times the center frequency of the dielectric filter. That is, it comprises a first portion so curved to form an open loop and two second portions formed to have a larger width than the first portion, each of the second portions being provided to an end of the first portion such that each extends in the opposite direction to the other. In this filter, input/output electrodes confronting ends of U-shaped strip line can be formed on a different layer from the layer where the resonator is formed in order to reduce its size. Reduction of size can be obtained by vertically folding the U-shaped strip line extending horizontally. Terminals of this filter formed on the side surface have a first layer formed on the side surface and a second layer formed on the first layer.Type: GrantFiled: March 12, 1992Date of Patent: September 28, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiro Eguchi, Fumio Fukushima, Koji Nishimura, Katsumi Sasaki, Takehiko Yoneda, Hiromitsu Taki
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Patent number: 5239280Abstract: A dielectric filter including a plurality of coaxial type dielectric resonators having outer conductors and inner conductors is arranged so that the outer conductors are connected to each other. Also included in the dielectric filter are central conductors arranged to be brought into contact with the inner conductors of said plurality of coaxial type dielectric resonators and a dielectric substrate having thereon a plurality of substrate conductors whose number at least corresponds to the number of the plurality of coaxial type dielectric resonators, and input/output terminals provided on said dielectric substrate. The central conductors are respectively coupled to the substrate conductors provided on the dielectric substrate and inductance elements are connected to the substrate conductors which are positioned at both sides.Type: GrantFiled: August 1, 1991Date of Patent: August 24, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiharu Noguchi, Kazuhiro Eguchi, Takumi Naruse, Kouichi Watanabe, Kuniaki Kiyosue, Hiromitsu Taki
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Patent number: 5210511Abstract: A dielectric resonator comprising a cylindrical substrate comprised of a dielectric ceramic, a first conductive film comprised of copper, formed on the inner surface, outer surface and one end of said cylindrical substrate, and a second conductive film comprised of at least one solder and tin, formed on said first conductive film. Thus the dielectric resonator of the present invention can be free from oxidation of the copper film when heating is carried out not in an inert gas environment but in the atmosphere. Hence it becomes unnecessary to use various devices for carrying out the heating in an inert gas environment as so required in the conventional cases. This also enables reduction of the number of processing steps, resulting in an improvement in productivity. Moreover, its weatherability can be improved, so that it can promise a long lifetime.Type: GrantFiled: November 20, 1991Date of Patent: May 11, 1993Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuhiro Izumi, Ryoichi Makimoto, Takehiko Yoneda, Hiromitsu Taki
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Patent number: 4985690Abstract: A coaxial dielectric resonator for use at high frequency. The outer or inner peripheral surface of a tubular dielectric member is stepped so as to provide a greater suppression of spurious resonance. The dielectric member has a prism-shaped outer configuration so as to provide a high Q value, as well as improved space factor.Type: GrantFiled: July 5, 1989Date of Patent: January 15, 1991Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Kazuhiro Eguchi, Eiichi Ochiai, Shinichiro Ito, Takehiko Yoneda, Hiromitsu Taki, Toshiharu Noguchi, Kuniaki Kiyosue, Akiro Yoshida, Morikazu Sagawa, Mitsuo Makimoto
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Patent number: 4559279Abstract: This invention provides an electrode on a heat-resisting and isolating substrate which is low-priced and has a stable character and the manufacturing process therefor. A paste which comprises 0.05 to 40 weight % of a metal material containing silver component of 0.5 to 100 weight % the remaining weight % of an organic vehicle, is formed on the substrate, and is heated at temperatures of 250.degree. to 900.degree. C. and consequently a metallic particle layer of 0.05 to 2 microns in thickness is formed on the substrate, and then an electrode of nickel and copper of 0.1 to 20 microns in thickness is built up on it by electroless plating.Type: GrantFiled: February 1, 1985Date of Patent: December 17, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Honjo, Hiromitsu Taki, Noriya Sato
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Patent number: 4510179Abstract: This invention provides an electrode on a heat-resisting and isolating substrate which is low-priced and has a stable character and the manufacturing process therefor. A paste which comprises 0.05 to 40 weight % of a metal material containing silver component of 0.5 to 100 weight % and the remaining weight % of an organic vehicle, is formed on the substrate, and is heated at temperatures of 250.degree. to 900.degree. C. and consequently a metallic particle layer of 0.05 to 2 microns in thickness is formed on the substrate, and then an electrode of nickel and copper of 0.1 to 20 microns in thickness is built up on it by electroless plating.Type: GrantFiled: June 30, 1983Date of Patent: April 9, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Katsuhiko Honjo, Hiromitsu Taki, Noriya Sato
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Patent number: 4504218Abstract: This invention relates to a ceramic burner plate using a fiber composite ceramic (1) of low thermal conductivity having gas passages (3), and provides a burner plate, wherein the burner plate contains a lithium component and such components as nickel, manganese, cobalt, titanium, copper, iron, chromium, and vanadium, to assist in the combustion of gas, and has a surface construction (2) having triangular projections, hexagonal projections or rhombic projections, to ensure increased heat radiation.Type: GrantFiled: September 28, 1982Date of Patent: March 12, 1985Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshihiro Mihara, Takao Kusuda, Koichi Noma, Hiromitsu Taki