Patents by Inventor Kazushige Ito
Kazushige Ito 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: 20120200163Abstract: An electric energy storage apparatus can generate an AC output in a low-loss and low-noise manner without using a DC-DC converter or an inverter. The electric energy storage apparatus comprises: an electric energy storage module group formed by connecting in series electric energy storage modules each comprising one or more electric energy storage elements; a balancing circuit electrically connected to the electric energy storage module group and configured to adjust a voltage to be applied to each of the electric energy storage modules; a first switch group comprising switches each in a path connecting a first terminal and a terminal of one of the series-connected electric energy storage modules; and a second switch group comprising switches each in a path connecting a second terminal and a terminal of one of the series-connected electric energy storage modules. The electric energy storage apparatus may perform a switch changeover in the switch groups.Type: ApplicationFiled: March 2, 2012Publication date: August 9, 2012Applicants: JAPAN CAPACITOR INDUSTRIAL CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCYInventors: Kazushige Ito, Tsutomu Sekido, Masatoshi Uno, Akio Kukita
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Publication number: 20120194138Abstract: An electric energy storage system is designed to equally utilize electric energy storage banks during charging/discharging, and keep fluctuation of an input voltage from a charger or an output voltage to a load, within an arbitrary range, while equally utilizing the electric energy storage banks during charging/discharging. The electric energy storage system comprises an electric energy storage module, a charger, a balancing circuit, a voltage detection section, taps led out, respectively, from one of opposite terminals of the electric energy storage module and/or the other terminal of the electric energy storage module and/or one or more of series-connection points between the electric energy storage units, through respective switches, and a switch control section for switching the switches such that one of the taps is connected to one of opposite terminals of the charger. The switch control section is operable to sequentially switch the switches according to progress of the charging.Type: ApplicationFiled: March 2, 2012Publication date: August 2, 2012Applicants: JAPAN CAPACITOR INDUSTRIAL CO., LTD., JAPAN AEROSPACE EXPLORATION AGENCYInventors: Masatoshi Uno, Akio Kukita, Kazushige Ito, Tsutomu Sekido
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Patent number: 8221958Abstract: Disclosed is a photosensitive paste including glass frit; organic binder; polymerizable monomer; photopolymerization initiator; and organic solvent, wherein at least a part of the polymerizable monomer contains phosphorus atom within the structure.Type: GrantFiled: May 28, 2009Date of Patent: July 17, 2012Assignee: E.I. du Pont de Nemours and CompanyInventors: Kazushige Ito, Masakatsu Kuroki
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Patent number: 8087136Abstract: An electronic device having an element body, wherein dielectric layers and internal electrode layers are alternately stacked, wherein a hetero phase is formed in the dielectric layers and/or the internal electrode layers; and the hetero phase includes a Mg element and a Mn element. Preferably, the hetero phase is formed at least at a part near boundaries of the dielectric layers and the internal electrode layers.Type: GrantFiled: October 4, 2007Date of Patent: January 3, 2012Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato
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Patent number: 7898793Abstract: A multilayer ceramic capacitor having a laminate including alternately stacked dielectric layers of a sintered compact composed of crystal particles of a dielectric porcelain composite and internal-electrode layers. The dielectric porcelain composite comprises a primary constituent containing barium titanate; a first accessory constituent composed of at least one of MgO, CaO, BaO, and SrO; a second accessory constituent containing silicon oxide as a major constituent; a third accessory constituent composed of at least one of V2O5, MoO3, and WO3; a fourth accessory constituent composed of an oxide of R1 (wherein R1 is at least one of Sc, Er, Tm, Yb, and Lu); a fifth accessory constituent composed of CaZrO3 or a combination of CaO and ZrO2; and a sixth accessory constituent composed of an oxide of R2 (wherein R2 is at least one of Y, Dy, Ho, Tb, Gd, and Eu).Type: GrantFiled: February 23, 2005Date of Patent: March 1, 2011Assignee: TDK CorporationInventors: Kazushige Ito, Haruya Hara, Toshihiro Iguchi, Shigeki Sato, Akira Sato, Takashi Kojima
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Patent number: 7887992Abstract: Disclosed is a photosensitive paste comprising a polymerizable monomer and a photopolymerization initiator, wherein the glass transition temperature of the polymerizable monomer is ?10° C. or less. The present paste may be used for creating a fine pattern and prevents residue from remaining in the area where paste should be removed.Type: GrantFiled: December 23, 2008Date of Patent: February 15, 2011Assignee: E. I. du Pont de Nemours and CompanyInventors: Kazushige Ito, Hiroaki Noda
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Publication number: 20100283388Abstract: Described is an electrode paste for plasma display panel, which has a black pigment, a glass frit, an organic binder and a solvent, wherein the black pigment contains cobalt oxide (CO3O4) and copper-chromium-cobalt composite oxide (Cr—Cu—Co—O).Type: ApplicationFiled: July 22, 2010Publication date: November 11, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Kazushige Ito, Ji-Yeon Lee, Hisashi Matsuno, Yong-Woo Cho
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Publication number: 20100159391Abstract: Disclosed is a photosensitive paste comprising a polymerizable monomer and a photopolymerization initiator, wherein the glass transition temperature of the polymerizable monomer is ?10° C. or less. The present paste may be used for creating a fine pattern and prevents residue from remaining in the area where paste should be removed.Type: ApplicationFiled: December 23, 2008Publication date: June 24, 2010Inventors: KAZUSHIGE ITO, Hiroaki Noda
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Publication number: 20100136484Abstract: Disclosed is a photosensitive paste including glass frit; organic binder; polymerizable monomer; photopolymerization initiator; and organic solvent, wherein at least a part of the polymerizable monomer contains phosphorus atom within the structure.Type: ApplicationFiled: May 28, 2009Publication date: June 3, 2010Applicant: E.I. DU PONT DE NEMOURS AND COMPANYInventors: Kazushige Ito, Masakatsu Kuroki
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Patent number: 7585802Abstract: A dielectric ceramic composition comprised of at least dielectric particles having barium titanate as its main ingredient, wherein the ratio of dielectric particles having a surface diffusion structure comprised of a main ingredient phase comprised of the main ingredient and a diffusion phase present around the main ingredient phase with respect to said dielectric particles is 60% or more and the ratio of dielectric particles having a domain in the main ingredient phase with respect to the dielectric particles having the surface diffusion structure is 20% or less. According to the present invention, a dielectric ceramic composition and electronic device realizing good high temperature accelerated life can be provided.Type: GrantFiled: November 10, 2008Date of Patent: September 8, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato, Akitoshi Yoshii, Masayuki Okabe, Atsushi Takeda, Takaki Shinkawa
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Patent number: 7550402Abstract: A ceramic electronic device including a dielectric layer, wherein the dielectric layer includes a main component expressed by a composition formula of Bam TiO2+m, wherein “m” satisfies 0.995?m?1.010 and a ratio of Ba and Ti satisfies 0.995?Ba/Ti?1.010, and a subcomponent (a sixth subcomponent) including an oxide of Al; and a content of the Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3 with respect to 100 moles of the main component; and preferably, the dielectric layer includes a segregation phase, and the segregation phase includes an oxide of Al.Type: GrantFiled: July 24, 2008Date of Patent: June 23, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato
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Patent number: 7541305Abstract: A dielectric ceramic composition having a main ingredient including a dielectric oxide expressed by the formula {(Me1-xCax)O}m.(Zr1-yTiy)O2, where the symbol Me indicating the name of the element in said formula is at least one of Sr, Mg, and Ba and where the symbols m, x, and y indicating the molar ratios of the formulation in the formula are in relationships of 0.995?m?1.020, 0<x?0.15, and 0?y?1.00, a first sub ingredient including an oxide of R (where R is a rare earth element), a second sub ingredient including an oxide of Mg, and a third sub ingredient including an oxide of Mn, wherein the ratios of the sub ingredients with respect to 100 moles of the main ingredient are first sub ingredient: 0.1 to 6 moles (value converted to oxide of R), second sub ingredient: 0.1 to 5 moles (value converted to oxide of Mg), and third sub ingredient: 0.1 to 2.Type: GrantFiled: August 29, 2005Date of Patent: June 2, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato, Taku Murase
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Patent number: 7538057Abstract: A ceramic electronic device having a dielectric layer, wherein the dielectric layer includes a main component containing a (Ba, Ca (Ti, Zr)O3 based material and a subcomponent containing an oxide of Si; and a content of the Si oxide is 0 to 0.4 wt % (note that 0 is not included) with respect to the entire dielectric layer; and preferably the dielectric layer has a segregation phase; and the segregation phase contains an oxide of Si and substantially not containing an oxide of Li; by which it is possible to provide a ceramic electronic device, such as a multilayer ceramic capacitor, having a low IR defect rate (initial insulation resistance defect rate), excellent high temperature load lifetime and high reliability.Type: GrantFiled: June 13, 2005Date of Patent: May 26, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Daisuke Iwanaga, Akira Sato
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Patent number: 7518849Abstract: A production method of a multilayer electronic device having an element body configured by alternately stacked dielectric layers formed by using dielectric paste and internal electrode layers formed by using conductive paste: wherein an adding quantity of a co-material included in conductive paste for forming internal electrode layers at the outermost positions in the stacking direction is larger than an adding quantity of a co-material included in conductive paste for forming internal electrode layers at the center position in the stacking direction when adding conductive particles and co-material particles to the conductive paste.Type: GrantFiled: March 28, 2007Date of Patent: April 14, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Kouji Tanaka, Makoto Takahashi, Akitoshi Yoshii, Masayuki Okabe
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Publication number: 20090082192Abstract: A dielectric ceramic composition comprised of at least dielectric particles having barium titanate as its main ingredient, wherein the ratio of dielectric particles having a surface diffusion structure comprised of a main ingredient phase comprised of the main ingredient and a diffusion phase present around the main ingredient phase with respect to said dielectric particles is 60% or more and the ratio of dielectric particles having a domain in the main ingredient phase with respect to the dielectric particles having the surface diffusion structure is 20% or less. According to the present invention, a dielectric ceramic composition and electronic device realizing good high temperature accelerated life can be provided.Type: ApplicationFiled: November 10, 2008Publication date: March 26, 2009Applicant: TDK CORPORATIONInventors: Kazushige Ito, Akira Sato, Akitoshi Yoshii, Masayuki Okabe, Atsushi Takeda, Takaki Shinkawa
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Patent number: 7498082Abstract: A dielectric ceramic composition including dielectric particles comprising a main ingredient phase having barium titanate as its main ingredient and a diffusion phase present at the periphery of said main ingredient phase, wherein when an average value of the depth where sub ingredient elements present at said diffusion phase diffuses from a surface of said diffusion phase toward a center of said dielectric particle is designated as an average diffusion depth, a dispersion of the average diffusion depth among the dielectric particles is, in terms of CV value, 5 to 30%. According to the present invention, an electronic device excellent in all of the dielectric constant, high temperature accelerated life, TC bias, and IR temperature dependency can be provided.Type: GrantFiled: November 7, 2006Date of Patent: March 3, 2009Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato, Akitoshi Yoshii, Masayuki Okabe, Atsushi Takeda, Takaki Shinkawa
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Publication number: 20090039781Abstract: Described is an electrode paste for plasma display panel, which has a black pigment, a glass frit, an organic binder and a solvent, wherein the black pigment contains cobalt oxide (Co3O4) and copper-chromium-cobalt composite oxide (Cr—Cu—Co—O).Type: ApplicationFiled: August 8, 2007Publication date: February 12, 2009Applicant: E. I. DUPONT DE NEMOURS AND COMPANYInventors: Kazushige Ito, Ji-Yeon Lee, Hisashi Matsuno, Yong-Woo Cho
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Publication number: 20080293560Abstract: A ceramic electronic device including a dielectric layer, wherein the dielectric layer includes a main component expressed by a composition formula of BamTiO2+m, wherein “m” satisfies 0.995?m?1.010 and a ratio of Ba and Ti satisfies 0.995?Ba/Ti?1.010, and a subcomponent (a sixth subcomponent) including an oxide of Al; and a content of the Al compound is 0 to 4.0 moles (note that 0 is not included) in terms of Al2O3 with respect to 100 moles of the main component; and preferably, the dielectric layer includes a segregation phase, and the segregation phase includes an oxide of Al.Type: ApplicationFiled: July 24, 2008Publication date: November 27, 2008Applicant: TDK CorporationInventors: Kazushige Ito, Akira Sato
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Patent number: 7439203Abstract: A dielectric ceramic composition comprising a main component including barium titanate and an oxide of Al, wherein the dielectric ceramic composition includes a plurality of dielectric particles, concentration of Al in each of the dielectric particles becomes lower from a particle surface to inside thereof, and each of the dielectric particles has an Al non-dispersed region substantially not including Al at least at a center portion of the particle.Type: GrantFiled: March 28, 2006Date of Patent: October 21, 2008Assignee: TDK CorporationInventors: Kazushige Ito, Akira Sato
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Publication number: 20080253060Abstract: To provide a multilayer ceramic capacitor which has capacitance-temperature characteristics satisfying the X8R characteristic specified by the EIA standard and has capacitance with an excellent long-term stability. The object is achieved by a multilayer ceramic capacitor comprising a laminate including alternately stacked dielectric layers of a sintered compact composed of crystal particles of a dielectric porcelain composite and internal-electrode layers.Type: ApplicationFiled: February 23, 2005Publication date: October 16, 2008Applicant: TDK CORPORATIONInventors: Kazushige Ito, Haruya Hara, Toshihiro Iguchi, Shigeki Sato, Akira Sato, Takashi Kojima