Patents by Inventor Masahiko Okuyama

Masahiko Okuyama 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).

  • Patent number: 8369064
    Abstract: A ceramic capacitor includes a capacitor body and a metal layer arranged on an outer surface of the capacitor body. The outer surface includes: a first capacitor major surface; a second capacitor major surface opposite to the first capacitor major surface in a thickness direction of the capacitor body; and a capacitor lateral surface between the first and second capacitor major surfaces. The capacitor body includes a first layer section and a second layer section. The first layer section includes a plurality of ceramic dielectric layers and a plurality of internal electrodes, wherein the ceramic dielectric layers and the internal electrodes are layered alternately. The second layer section is exposed at the first capacitor major surface, and includes a corner portion at a boundary between the first capacitor major surface and the capacitor lateral surface. The metal layer covers the corner portion of the second layer section.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: February 5, 2013
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Seiji Ichiyanagi, Kenji Murakami, Motohiko Sato, Jun Otsuka, Masahiko Okuyama
  • Patent number: 8072732
    Abstract: A capacitor is provided having a tough surface portion which prevents cracking that tends to occur when the capacitor is built-in or surface-mounted on a wiring board. A ceramic sintered body of the capacitor includes a capacitor forming layer portion, a cover layer portion and an interlayer portion. The capacitor forming layer portion has a laminated structure wherein ceramic dielectric layers and inner electrodes connected to a peripheral portion of capacitor via conductors, are alternately laminated. The cover layer portion is exposed at a surface portion of the ceramic body and has a laminated structure wherein ceramic dielectric layers and dummy electrodes not connected to the capacitor via conductors, are alternately laminated.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: December 6, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Motohiko Sato, Kenji Murakami, Jun Otsuka, Manabu Sato, Masahiko Okuyama, Kozo Yamazaki
  • Publication number: 20100300740
    Abstract: A ceramic capacitor includes a capacitor body and a metal layer arranged on an outer surface of the capacitor body. The outer surface includes: a first capacitor major surface; a second capacitor major surface opposite to the first capacitor major surface in a thickness direction of the capacitor body; and a capacitor lateral surface between the first and second capacitor major surfaces. The capacitor body includes a first layer section and a second layer section. The first layer section includes a plurality of ceramic dielectric layers and a plurality of internal electrodes, wherein the ceramic dielectric layers and the internal electrodes are layered alternately. The second layer section is exposed at the first capacitor major surface, and includes a corner portion at a boundary between the first capacitor major surface and the capacitor lateral surface. The metal layer covers the corner portion of the second layer section.
    Type: Application
    Filed: June 1, 2010
    Publication date: December 2, 2010
    Inventors: Seiji Ichiyanagi, Kenji Murakami, Motohiko Sato, Jun Otsuka, Masahiko Okuyama
  • Patent number: 7580240
    Abstract: A via array capacitor including a capacitor body having a first main surface and a second main surface and having a structure in which dielectric layers and inner electrode layers are alternately laminated; a plurality of via conductors which conduct the inner electrode layers to each other and are, as a whole, arranged in array form; and metal-containing layers which are disposed on at least one of the first main surface and the second main surface, wherein a total volume of the inner electrode layers and the metal-containing layers included in the via array capacitor is from 45 vol.% to 95 vol.% of a volume of the via array capacitor.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: August 25, 2009
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hiroshi Yamamoto, Toshitake Seki, Jun Otsuka, Manabu Sato, Masahiko Okuyama
  • Publication number: 20080251285
    Abstract: A capacitor is provided having a tough surface portion which prevents cracking that tends to occur when the capacitor is built-in or surface-mounted on a wiring board. A ceramic sintered body of the capacitor includes a capacitor forming layer portion, a cover layer portion and an interlayer portion. The capacitor forming layer portion has a laminated structure wherein ceramic dielectric layers and inner electrodes connected to a peripheral portion of capacitor via conductors, are alternately laminated. The cover layer portion is exposed at a surface portion of the ceramic body and has a laminated structure wherein ceramic dielectric layers and dummy electrodes not connected to the capacitor via conductors, are alternately laminated.
    Type: Application
    Filed: April 10, 2008
    Publication date: October 16, 2008
    Inventors: Motohiko Sato, Kenji Murakami, Jun Otsuka, Manabu Sato, Masahiko Okuyama, Kozo Yamazaki
  • Patent number: 7348069
    Abstract: A first ceramic substrate includes a substrate (2) and a glaze layer (3), wherein the glaze layer has a surface having an Ra of 0.02 ?m or less and a Ry of 0.25 ?m or less. A second ceramic substrate is formed by subjecting a glass layer (24) formed on a surface of a substrate (2) to heating-and-pressurizing treatment, thereby forming a glaze layer (3) on the substrate (2), and planarization-polishing the surface of the glaze layer. A third ceramic substrate includes a substrate (2), a glaze layer (3) containing substantially no pores formed on the substrate (2) and the surface thereof being planarization-polished, and a wiring pattern (21), wherein at least one first end of the wiring pattern is exposed to the glaze layer (3) surface of the substrate (1), and at least one second end is exposed to another surface of the substrate (1).
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: March 25, 2008
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Seiji Ichiyanagi, Jun Otsuka, Manabu Sato, Masahiko Okuyama
  • Publication number: 20070117338
    Abstract: A via array capacitor comprising: a capacitor body including a first main surface and a second main surface and having a structure in which dielectric layers and inner electrode layers are alternately laminated; a plurality of via conductors which conduct the inner electrode layers to each other and are, as a whole, arranged in array form; and metal-containing layers which are disposed on at least one of the first main surface and the second main surface, wherein a total of a thickness of the metal-containing layers disposed on the first main surface and a thickness of the metal-containing layers disposed on the second main surface is from 15% to 80% of an overall thickness of the via array capacitor.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 24, 2007
    Inventors: Hiroshi Yamamoto, Toshitake Seki, Jun Otsuka, Manabu Sato, Masahiko Okuyama
  • Publication number: 20050078433
    Abstract: A first ceramic substrate includes a substrate (2) and a glaze layer (3), wherein the glaze layer has a surface having an Ra of 0.02 ?m or less and a Ry of 0.25 ?m or less. A second ceramic substrate is formed by subjecting a glass layer (24) formed on a surface of a substrate (2) to heating-and-pressurizing treatment, thereby forming a glaze layer (3) on the substrate (2), and planarization-polishing the surface of the glaze layer. A third ceramic substrate includes a substrate (2), a glaze layer (3) containing substantially no pores formed on the substrate (2) and the surface thereof being planarization-polished, and a wiring pattern (21), wherein at least one first end of the wiring pattern is exposed to the glaze layer (3) surface of the substrate (1), and at least one second end is exposed to another surface of the substrate (1).
    Type: Application
    Filed: September 29, 2004
    Publication date: April 14, 2005
    Inventors: Seiji Ichiyanagi, Jun Otsuka, Manabu Sato, Masahiko Okuyama
  • Patent number: 6595388
    Abstract: An assisting tool for pressing a piston while fixing in place a syringe or a similar instrument which contains a highly viscous chemical agent, so as to extrude the chemical agent, as well as a method for extruding a chemical agent using the same. The chemical-agent extrusion assisting-tool includes a tool body in the form of a cylindrical body having a space formed therein for accommodating a tubular container, such as a syringe, which contains a highly viscous chemical, such as calcium-phosphate-based cement formed by kneading a calcium phosphate powder and a kneading liquid composed of a polysaccharide-containing aqueous solution, and an outlet formed at its bottom end. The cylindrical body has a cylindrical space formed therein so as to open at an upper end surface thereof.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: July 22, 2003
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Publication number: 20030126008
    Abstract: When a purchaser purchases target merchandise/service or contending merchandise/service, discount information can be determined depending on the current share of the target merchandise/service by referring to a condition table in which a discount condition is entered depending on the share of the merchandise/service.
    Type: Application
    Filed: March 26, 2002
    Publication date: July 3, 2003
    Applicant: FUJITSU LIMITED
    Inventor: Masahiko Okuyama
  • Patent number: 6550957
    Abstract: A kneading device adapted for preparing calcium phosphate-based cement and for applying the cement directly to a required site which comprises a cylinder 1 which includes a hollow cylindrical body portion 11 and a nozzle 12 formed at the distal end of the cylindrical body portion; a plug 2 having an axial through-hole 21 slidably disposed within the proximal end of the cylindrical body portion; a piston assembly 3 which includes a shaft 31 extending through the through-hole 21 of the plug 2 for axial and rotatable movement, a kneading element 32 at the distal end of the shaft 31 within the cylindrical body portion, and a handle 34 formed at the proximal end of the shaft 31 external of the cylindrical body portion; a cover member 4 attached to and forming a closure for the nozzle 12; and a stop member 5 for locating the plug 2 in position at the proximal end of the cylindrical body portion.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: April 22, 2003
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Publication number: 20020166878
    Abstract: An assisting tool for pressing a piston while fixing in place a syringe or a similar instrument which contains a highly viscous chemical agent, so as to extrude the chemical agent, as well as a method for extruding a chemical agent using the same. The chemical-agent extrusion assisting-tool includes a tool body in the form of a cylindrical body having a space formed therein for accommodating a tubular container, such as a syringe, which contains a highly viscous chemical, such as calcium-phosphate-based cement formed by kneading a calcium phosphate powder and a kneading liquid composed of a polysaccharide-containing aqueous solution, and an outlet formed at its bottom end. The cylindrical body has a cylindrical space formed therein so as to open at an upper end surface thereof.
    Type: Application
    Filed: July 1, 2002
    Publication date: November 14, 2002
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Publication number: 20020118596
    Abstract: A kneading device adapted for preparing calcium phosphate-based cement and for applying the cement directly to a required site which comprises a cylinder 1 which includes a hollow cylindrical body portion 11 and a nozzle 12 formed at the distal end of the cylindrical body portion; a plug 2 having an axial through-hole 21 slidably disposed within the proximal end of the cylindrical body portion; a piston assembly 3 which includes a shaft 31 extending through the through-hole 21 of the plug 2 for axial and rotatable movement, a kneading element 32 at the distal end of the shaft 31 within the cylindrical body portion, and a handle 34 formed at the proximal end of the shaft 31 external of the cylindrical body portion; a cover member 4 attached to and forming a closure for the nozzle 12; and a stop member 5 for locating the plug 2 in position at the proximal end of the cylindrical body portion.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 29, 2002
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Patent number: 6431743
    Abstract: An assisting tool for pressing a piston while fixing in place a syringe or a similar instrument which contains a highly viscous chemical agent, so as to extrude the chemical agent, as well as a method for extruding a chemical agent using the same. The chemical-agent extrusion assisting-tool includes a tool body in the form of a cylindrical body having a space formed therein for accommodating a tubular container, such as a syringe, which contains a highly viscous chemical, such as calcium-phosphate-based cement formed by kneading a calcium phosphate powder and a kneading liquid composed of a polysaccharide-containing aqueous solution, and an outlet formed at its bottom end. The cylindrical body has a cylindrical space formed therein so as to open at an upper end surface thereof.
    Type: Grant
    Filed: October 3, 2000
    Date of Patent: August 13, 2002
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Patent number: 6367962
    Abstract: A kneading device adapted for preparing calcium phosphate-based cement and for applying the cement directly to a required site which comprises a cylinder 1 which includes a hollow cylindrical body portion 11 and a nozzle 12 formed at the distal end of the cylindrical body portion; a plug 2 having an axial through-hole 21 slidably disposed within the proximal end of the cylindrical body portion; a piston assembly 3 which includes a shaft 31 extending through the through-hole 21 of the plug 2 for axial and rotatable movement, a kneading element 32 at the distal end of the shaft 31 within the cylindrical body portion, and a handle 34 formed at the proximal end of the shaft 31 external of the cylindrical body portion; a cover member 4 attached to and forming a closure for the nozzle 12; and a stop member 5 for locating the plug 2 in position at the proximal end of the cylindrical body portion.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: April 9, 2002
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Yoichiro Mizutani, Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Patent number: 6235225
    Abstract: A process for producing a biocompatible implant material which can be suitably shaped into a variety of forms. A binder is added to a mixture of hydroxylapatite powder and calcium phosphate glass frit (5 wt. %), to thereby prepare a slurry, and the resultant slurry is granulated, to prepare spherical raw material granules. Separately, spherical polyisobutyl methacrylate particles are prepared, and the particles are dry-mixed with the above-prepared granules, to thereby obtain a powder mixture. The powder mixture is compacted using a mold press, to thereby form a cuboid sample. The resultant compact is heated in a drier at 170° C. for three hours, to thereby melt spherical polyisobutyl methacrylate particles. Thereafter, the compact is allowed to cool, to thereby bind the raw material granules together via the polyisobutyl methacrylate that solidifies after melting. After the compact is allowed to cool, the compact is subjected to shaping by use of a copy machining machine and also to drilling.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: May 22, 2001
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Kohji Okada, Tsunetoshi Okura, Jun Sugimoto, Masahiko Okuyama
  • Patent number: 6193910
    Abstract: A paste for filling through-holes of a printed wiring board contains 100 parts by weight of an epoxy resin composition containing 90 to 99.5 parts by weight of an epoxy resin and 0.5 to 10 parts by weight of a curing agent; and (B) 500 to 1000 parts by weight of a metallic filler having an average particle size of 0.5 to 20 &mgr;m. The paste has a viscosity of not higher than 20,000 poise at 25° C. and a volatile content of not more than 1.0% when heated in a filling step. The paste exhibits such shrink-resistance properties that when a first cured resin obtained by heating in a filling step is re-heated and cooled in a solder reflow step to obtain a second cured resin, the shrinkage percentage of the first cured resin to the second cured resin in the longitudinal direction of the through-hole is not greater than 0.1%.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: February 27, 2001
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Norihiko Ikai, Hiroshi Sumi, Masahiko Okuyama, Toshifumi Kojima
  • Patent number: 6051061
    Abstract: A calcium phosphate cement or the like which shows a low viscosity and excellent handleability in the step of kneading and achieves a high strength of the hardened body even though a kneading liquid is used in a small amount. A calcium phosphate cement containing a polysaccharide powder and 0.05 to 5% by weight of an N-alkyl-D-glucamine such as N-methyl-D-glucamine; or a calcium phosphate cement containing a calcium phosphate powder and a specific alkanolamine such as monoethanolamine. A calcium phosphate cement composition containing a calcium phosphate powder and a kneading liquid comprising an aqueous solution containing 0.1 to 10% by weight of an N-alkyl-D-glucamine such as N-methyl-D-glucamine or a kneading liquid containing a definite amount of a specific alkanolamine such as monoethanolamine.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: April 18, 2000
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Patent number: 5993535
    Abstract: A calcium phosphate cement and a calcium phosphate cement composition are disclosed. The calcium phosphate cement comprises a calcium phosphate powder having an average particle diameter of 20 .mu.m or smaller and a tap density of 35% or higher, and a polysaccharide. The polysaccharide is preferably a dextran sulfate (e.g., dextran sulfate sodium) having an average particle diameter of 0.1 to 100 .mu.m. The calcium phosphate cement composition comprises the above specific calcium phosphate powder and a liquid for cement mixing comprising an aqueous solution containing 30 to 60 wt % dextran sulfate (e.g., dextran sulfate sodium or dextran sulfate potassium). The calcium phosphate powder preferably comprises a tetracalcium phosphate powder and an equimolar amount of a calcium hydrogen phosphate powder as main components.
    Type: Grant
    Filed: August 27, 1998
    Date of Patent: November 30, 1999
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takenori Sawamura, Masateru Hattori, Masahiko Okuyama
  • Patent number: RE38491
    Abstract: Powders of BaCO3, TiO2, ZnO, etc. are mixed to each other at a predetermined ratio of quantity, calcined in an atmospheric air at &pgr;°-120° C., and pulverized to obtain a calcined powder having an average grain size from 1 to 3 &mgr; m, 0.1 to 20 parts-by weight of a powder having an average grain size from 0.1 to 1.5 &mgr;m comprising a glass having a transition point of not higher than 450° C. obtained by mixing powders of Pb3O4, SiO2, Na2O, etc. to each other, melting and then pouring into water and pulverizing the thus obtained glass is admixed to the calcined powder. The mixture is dried, pelleted by adding a resin and the pellet powder is molded into a cylindrical shape, applied with CIP (Cold isotartic press), and the molding product after the treatment is sintered in an atmospheric air at 850° to 1000° C. to obtain a dielectric ceramic sintered at low temperature.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: April 6, 2004
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Hidetoshi Mizutani, Masahiko Okuyama, Noritaka Yoshida, Hirofumi Ozeki, Hiroshi Katagiri