Patents by Inventor Kenji Kawabata

Kenji Kawabata 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: 7910977
    Abstract: A semiconductor storage element includes: a semiconductor layer constituted of a line pattern with a predetermined width formed on a substrate; a quantum dot forming an electric charge storage layer formed on the semiconductor layer through a first insulating film serving as a tunnel insulating film; an impurity diffusion layer formed in a surface layer of the semiconductor layer so as to sandwich the quantum dot therebetween; and a control electrode formed on the quantum dot through a second insulating film.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: March 22, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kenji Kawabata
  • Publication number: 20100214840
    Abstract: A multi-dot flash memory includes active areas arranged in a first direction, which extend to a second direction crossed to the first direction, the first and second direction being parallel to a surface of a semiconductor substrate, floating gates arranged in the first direction, which are provided above the active areas, a word line provided above the floating gates, which extends to the first direction, and bit lines provided between the floating gates, which extend to the second direction. Each of the floating gates has two side surfaces in the first direction, shapes of the two side surfaces are different from each other, and shapes of the facing surfaces of the floating gates which are adjacent to each other in the first direction are symmetrical.
    Type: Application
    Filed: September 21, 2009
    Publication date: August 26, 2010
    Inventors: Takashi Ichikawa, Hiroshi Watanabe, Kenji Kawabata
  • Patent number: 7595130
    Abstract: A separator is disclosed which enables to inject a non-aqueous electrolytic solution easily during production of batteries such as lithium ion secondary batteries and also enables to produce a battery which is excellent in various battery performances. The battery separator comprises a long porous film in which plural non-porous linear regions are arranged in a width direction of the film, at least one surface of the linear regions being a concave or convex surface is advantageously used as a battery separator for lithium secondary batteries or the like.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: September 29, 2009
    Assignee: UBE Industries, Ltd.
    Inventors: Kenji Kawabata, Koji Abe
  • Publication number: 20090096004
    Abstract: A semiconductor storage device includes: a substrate having a semiconductor layer at least on a surface thereof; and a plurality of quantum dot elements forming a charge storage layer formed above the semiconductor layer via a first insulating film that becomes a tunnel insulating film in such a manner that the quantum dot elements are connected with a bit line in series, wherein each quantum dot element forms a single electron memory.
    Type: Application
    Filed: October 3, 2008
    Publication date: April 16, 2009
    Inventors: Kenji KAWABATA, Hisataka MEGURO
  • Publication number: 20080272425
    Abstract: A semiconductor storage element includes: a semiconductor layer constituted of a line pattern with a predetermined width formed on a substrate; a quantum dot forming an electric charge storage layer formed on the semiconductor layer through a first insulating film serving as a tunnel insulating film; an impurity diffusion layer formed in a surface layer of the semiconductor layer so as to sandwich the quantum dot therebetween; and a control electrode formed on the quantum dot through a second insulating film.
    Type: Application
    Filed: November 29, 2007
    Publication date: November 6, 2008
    Inventor: Kenji KAWABATA
  • Publication number: 20080187825
    Abstract: A separator is disclosed which enables to inject a non-aqueous electrolytic solution easily during production of batteries such as lithium ion secondary batteries and also enables to produce a battery which is excellent in various battery performances. The battery separator comprises a long porous film in which plural non-porous linear regions are arranged in a width direction of the film, at least one surface of the linear regions being a concave or convex surface is advantageously used as a battery separator for lithium secondary batteries or the like.
    Type: Application
    Filed: August 30, 2004
    Publication date: August 7, 2008
    Applicant: UBE INDUSTRIES LTD.
    Inventors: Kenji Kawabata, Koji Abe
  • Patent number: 7405088
    Abstract: A failure analysis method according to the invention includes inputting the positions of failures in multiple wafers of an input device; preparing multiple sections in the multiple wafers; calculating feature amounts, which are represented by at least one numerical value representing a distribution of the failures in the multiple wafers, for each of the multiple sections; and representing by a first numerical value, the degree of similarity between the multiple wafers in terms of the feature amounts. Subsequently, the method includes detecting another wafer, which has the first numerical value greater than a predetermined first threshold, for each of the multiple wafers and forming a similar wafer group of multiple wafers with similar distributions of the failures.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: July 29, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Matsushita, Kenichi Kadota, Kenji Kawabata, Yoshiyuki Shioyama
  • Patent number: 7311966
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: December 25, 2007
    Assignee: Ube Industries, Ltd.
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Patent number: 7303811
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: December 4, 2007
    Assignee: Ube Industries
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20070275222
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: May 23, 2007
    Publication date: November 29, 2007
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20070254482
    Abstract: A method for manufacturing a semiconductor device has measuring a finished state of a wafer in a completed process, estimating an in-surface tendency of the wafer based on a result of the measuring, estimating a surface characteristic of the wafer based on the estimated in-surface tendency, setting a process condition of a uncompleted process based on the estimated surface characteristic and controlling the uncompleted process based on the set process condition.
    Type: Application
    Filed: April 25, 2007
    Publication date: November 1, 2007
    Inventors: Kenji Kawabata, Junji Sugamoto
  • Publication number: 20070059517
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 ?m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 15, 2007
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20070042512
    Abstract: Apparatus and method of predicting performance of a semiconductor manufacturing process and device, which reduces simulation resources to predict the performance distribution in the wafer and manufacturing method of a semiconductor device are disclosed.
    Type: Application
    Filed: August 15, 2006
    Publication date: February 22, 2007
    Inventor: Kenji Kawabata
  • Publication number: 20040255198
    Abstract: A failure analysis method according to the invention includes inputting the positions of failures in multiple wafers of an input device; preparing multiple sections in the multiple wafers; calculating feature amounts, which are represented by at least one numerical value representing a distribution of the failures in the multiple wafers, for each of the multiple sections; and representing by a first numerical value, the degree of similarity between the multiple wafers in terms of the feature amounts. Subsequently, the method includes detecting another wafer, which has the first numerical value greater than a predetermined first threshold, for each of the multiple wafers and forming a similar wafer group of multiple wafers with similar distributions of the failures.
    Type: Application
    Filed: March 17, 2004
    Publication date: December 16, 2004
    Inventors: Hiroshi Matsushita, Kenichi Kadota, Kenji Kawabata, Yoshiyuki Shioyama
  • Publication number: 20040241419
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: February 25, 2004
    Publication date: December 2, 2004
    Applicant: Ube Industries, Ltd.
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Publication number: 20040166297
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: February 25, 2004
    Publication date: August 26, 2004
    Applicant: Ube Industries, Ltd.
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata
  • Patent number: 6734641
    Abstract: A device for turning on light allowing the brightness of an inverter-type illumination apparatus to be adjusted without having to install an additional oscillation circuit. The device comprises an active converter which generates a DC voltage from the commercial AC voltage and an inverter which switches the generated DC voltage, includes a capacitor connected in parallel with a discharge tube to be lighted, and supplies a high-frequency current to the discharge tube via a resonance circuit whose resonance frequency is determined according to the equivalent impedance of the discharge tube. The active converter has a triac adjusting the DC voltage, and switching elements of the inverter perform self-oscillation under control of the phase of the resonance current flowing through the resonance circuit.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: May 11, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Shoji, Hideki Miyazaki, Yasuyuki Kojima, Kenji Kawabata
  • Patent number: 6683418
    Abstract: An illumination lighting apparatus has a resonance load circuit including a discharge tube, a power supply circuit for generating DC voltage from commercial AC voltage, and an inverter for converting the generated DC voltage into an AC voltage and supplying the AC voltage to the resonance load circuit. Further, a control circuit is provided which controls electric power supplied to the resonance load circuit in response to operating parameters of the discharge tube immediately after lighting of the discharge tube.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: January 27, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Shoji, Hideki Miyazaki, Kenji Kawabata
  • Patent number: 6627346
    Abstract: A battery separator favorably employable for lithium secondary battery comprises at least one porous film in which 100 to 40,000 ppm of particles of silicon dioxide, aluminum oxide, magnesium oxide, zinc oxide or metal oxides containing at least two metal elements selected from the group consisting of Si, Al, Mg and Zn having a mean diameter of 0.1 to 10 &mgr;m are dispersed in a porous resin matrix.
    Type: Grant
    Filed: November 10, 2000
    Date of Patent: September 30, 2003
    Assignee: Ube Industries, Ltd.
    Inventors: Masayuki Kinouchi, Tetsuo Akazawa, Takashi Oe, Ryuichiro Kogure, Kenji Kawabata, Yuuji Nakakita
  • Publication number: 20030129379
    Abstract: A porous insulating film comprising a highly heat resistant resin film having a fine porous structure with a mean pore size of 0.01-5 &mgr;m in at least the center of the film, and a porosity of 15-80%. A laminate is prepared by forming a heat resistant adhesive layer or a conductive metal layer or an inorganic or metal substrate on one or both sides of the porous insulating film or by forming an inorganic or metal substrate on one side of the porous insulating film and a conductive metal layer on the other side.
    Type: Application
    Filed: March 31, 2000
    Publication date: July 10, 2003
    Inventors: Shigeru Yao, Yukihiko Asano, Shyusei Ohya, Kenji Fukunaga, Masayuki Kinouchi, Kenji Kawabata