Patents by Inventor Kazumi Asada

Kazumi Asada 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: 8691087
    Abstract: A filtration apparatus that removes chips from a chip-containing machining fluid is applied which effectively prevents clogging of a filtration filter that makes up the apparatus. A filtration apparatus 1 is provided with a magnet 9 attached to an outer wall surface of a drum housing chamber 5, the magnet 9 functions as means for fixing chips in the machining fluid that flows into the drum housing chamber 5 from an inlet 16 on a bottom surface 5B or a slope 5A of the drum housing chamber 5 by a magnetic force, and the periphery of the inlet 16 is configured as a magnet non-existent section 17 where the magnet 9 does not exist so as to suppress a phenomenon that chips in the machining fluid are fixed near a top edge of the slope 5A of the drum housing chamber 5 by the magnetic force of the magnet 9.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: April 8, 2014
    Assignee: Mosnic Corporation
    Inventors: Kazumi Asada, Shuichi Mogi
  • Patent number: 8513140
    Abstract: A post-dry etching cleaning liquid composition for cleaning a substrate after dry etching is provided, the cleaning liquid composition containing at least one type of fluorine compound, glyoxylic acid, at least one type of organic acid salt, and water. With regard to the fluorine compound, ammonium fluoride may be used. With regard to the organic acid salt, at least one of ammonium oxalate, ammonium tartarate, ammonium citrate, and ammonium acetate may be used.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: August 20, 2013
    Assignees: Sony Corporation, Kabushiki Kaisha Toshiba, Kanto Kagaku Kabushiki Kaisha
    Inventors: Masafumi Muramatsu, Kazumi Asada, Yukino Hagino, Atsushi Okuyama, Takahito Nakajima, Kazuhiko Takase, Yoshihiro Uozumi, Tsuyoshi Matsumura, Takuo Ohwada, Norio Ishikawa
  • Publication number: 20110014793
    Abstract: A post-dry etching cleaning liquid composition for cleaning a substrate after dry etching is provided, the cleaning liquid composition containing at least one type of fluorine compound, glyoxylic acid, at least one type of organic acid salt, and water. With regard to the fluorine compound, ammonium fluoride may be used. With regard to the organic acid salt, at least one of ammonium oxalate, ammonium tartarate, ammonium citrate, and ammonium acetate may be used.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Inventors: Masafumi Muramatsu, Kazumi Asada, Yukino Hagino, Atsushi Okuyama, Takahito Nakajima, Kazuhiko Takase, Yoshihiro Uozumi, Tsuyoshi Matsumura, Takuo Ohwada, Norio Ishikawa
  • Patent number: 7682463
    Abstract: After the resist stripping liquid is supplied to the surface of the substrate which is being rotated at a first rotational speed, the rotational speed of the substrate is reduced from the first rotational speed to a second rotational speed with the supply of the resist stripping liquid to the surface of the substrate continued, thereby forming a liquid film by a mount of the resist stripping liquid on the surface of the substrate and then, maintaining a state where the liquid film is formed.
    Type: Grant
    Filed: March 15, 2005
    Date of Patent: March 23, 2010
    Assignee: Dainippon Screen Mfg. Co., Ltd.
    Inventors: Atsushi Okuyama, Kazumi Asada, Yoshio Okamoto, Yuji Sugahara
  • Publication number: 20080188085
    Abstract: A post-dry etching cleaning liquid composition for cleaning a substrate after dry etching is provided, the cleaning liquid composition containing at least one type of fluorine compound, glyoxylic acid, at least one type of organic acid salt, and water. With regard to the fluorine compound, ammonium fluoride may be used. With regard to the organic acid salt, at least one of ammonium oxalate, ammonium tartarate, ammonium citrate, and ammonium acetate may be used.
    Type: Application
    Filed: March 11, 2008
    Publication date: August 7, 2008
    Inventors: Masafumi Muramatsu, Kazumi Asada, Yukino Hagino, Atsushi Okuyama, Takahito Nakajima, Kazuhiko Takase, Yoshihiro Uozumi, Tsuyoshi Matsumura, Takuo Ohwada, Norio Ishikawa
  • Publication number: 20080076260
    Abstract: One example of a separation-material composition for a photo-resist according to the present invention comprises 5.0 weight % of sulfamic acid, 34.7 weight % of H2O, 0.3 weight % of ammonium 1-hydrogen difluoride, 30 weight % of N,N-dimethylacetamide and 30 weight % of diethylene glycol mono-n-buthyl ether. Another example of a separation-material composition for a photo-resist according to the present invention comprises 1-hydroxyethylidene-1, 3.0 weight % of 1-diphosphonic acid, 0.12 weight % of ammonium fluoride, 48.38 weight % of H2O and 48.5 weight % of diethylene glycol mono-n-buthyl ether. The separation-material composition for the photo-resist is mainly used for a medicinal liquid washing liquid/scientific liquid in order to remove the photo-resist residuals and the by-product polymer after an ashing process of a photo-resist mask.
    Type: Application
    Filed: November 6, 2007
    Publication date: March 27, 2008
    Applicants: Sony Corporation, EKC Technology K.K.
    Inventors: Masafumi Muramatsu, Hayato Iwamoto, Kazumi Asada, Tomoko Suzuki, Toshitaka Hiraga, Testu Aoyama
  • Patent number: 7341827
    Abstract: One example of a separation-material composition for a photo-resist according to the present invention comprises 5.0 weight % of sulfamic acid, 34.7 weight % of H2O, 0.3 weight % of ammonium 1-hydrogen difluoride, 30 weight % of N,N-dimethylacetamide and 30 weight % of diethylene glycol mono-n-buthyl ether. Another example of a separation-material composition for a photo-resist according to the present invention comprises 1-hydroxyethylidene-1, 3.0 weight % of 1-diphosphonic acid, 0.12 weight % of anmonium fluoride, 48.38 weight % of H2O and 48.5 weight % of diethylene glycol mono-n-buthl ether. The separation-material composition for the photo-resist is mainly used for a medicinal liquid washing liquid/scientific liquid in order to remove the photo-resist residuals and the by-product polymer after an ashing process of a photo-resist mask.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: March 11, 2008
    Assignees: Sony Corporation, EKC Technology K.K.
    Inventors: Masafumi Muramatsu, Hayato Iwamoto, Kazumi Asada, Tomoko Suzuki, Toshitaka Hiraga, Tetsuo Aoyama
  • Publication number: 20060019201
    Abstract: A post-dry etching cleaning liquid composition for cleaning a substrate after dry etching is provided, the cleaning liquid composition containing at least one type of fluorine compound, glyoxylic acid, at least one type of organic acid salt, and water. With regard to the fluorine compound, ammonium fluoride may be used. With regard to the organic acid salt, at least one of ammonium oxalate, ammonium tartarate, ammonium citrate, and ammonium acetate may be used.
    Type: Application
    Filed: June 6, 2005
    Publication date: January 26, 2006
    Inventors: Masafumi Muramatsu, Kazumi Asada, Yukino Hagino, Atsushi Okuyama, Takahito Nakajima, Kazuhiko Takase, Yoshihiro Uozumi, Tsuyoshi Matsumura, Takuo Ohwada, Norio Ishikawa
  • Publication number: 20050252526
    Abstract: A single wafer cleaning method and a cleaning apparatus thereof are provided in which the transition to rinse treatment is swiftly performed without being influenced by a chemical liquid component, and a polymer and a residue of chemical liquid are suppressed to reduce defects on a substrate. The single wafer cleaning method according to an embodiment of the present invention is a single wafer cleaning method of performing cleaning by a chemical liquid 8 and a rinse liquid 14 while rotating a substrate-to-be-cleaned 30, in which after chemical liquid treatment is performed by moving a chemical liquid nozzle 10 over the substrate-to-be-cleaned 30, rinse treatment is performed on the substrate-to-be-cleaned 30 by discharging the rinse liquid 14 from a rinse nozzle 16 disposed fixedly at a position not interfering with the movement of the chemical liquid nozzle 10.
    Type: Application
    Filed: April 28, 2005
    Publication date: November 17, 2005
    Applicant: Sony Corporation
    Inventors: Naoki Ogawa, Hayato Iwamoto, Kazumi Asada, Mari Yokota, Yasuhiro Hiei, Tsuyoshi Nishimatsu
  • Publication number: 20050205115
    Abstract: After the resist stripping liquid is supplied to the surface of the substrate which is being rotated at a first rotational speed, the rotational speed of the substrate is reduced from the first rotational speed to a second rotational speed with the supply of the resist stripping liquid to the surface of the substrate continued, thereby forming a liquid film by a mount of the resist stripping liquid on the surface of the substrate and then, maintaining a state where the liquid film is formed.
    Type: Application
    Filed: March 15, 2005
    Publication date: September 22, 2005
    Inventors: Atsushi Okuyama, Kazumi Asada, Yoshio Okamoto, Yuji Sugahara
  • Publication number: 20040241935
    Abstract: Provided is a method of manufacturing a semiconductor device capable of effectively removing impurity product attached to a semiconductor film while suppressing coming off of, for example, hemispherical grains formed on a semiconductor film containing an impurity. Spherical or hemispherical grains are formed on the surface of an amorphous silicon film containing phosphorus which forms a bottom electrode of a capacitor. In order to suppress depletion of the bottom electrode, annealing is performed in PH3, atmosphere so as to diffuse phosphorus to the grains. Cleaning is performed using hot water (deionized water) in order to remove the impurity product attached onto the surface of the bottom electrode by annealing. A native oxide film formed on the surface of the bottom electrode is removed by cleaning using a mixed solution of hydrofluoric acid and water. A dielectric film and a top electrode are formed in order so as to cover the surface of the bottom electrode.
    Type: Application
    Filed: April 13, 2004
    Publication date: December 2, 2004
    Inventors: Tomoyuki Hirano, Kazumi Asada
  • Patent number: 6815289
    Abstract: Provided is a method of manufacturing a semiconductor device capable of effectively removing impurity product attached to a semiconductor film while suppressing coming off of, for example, hemispherical grains formed on a semiconductor film containing an impurity. Spherical or hemispherical grains are formed on the surface of an amorphous silicon film containing phosphorus which forms a bottom electrode of a capacitor. In order to suppress depletion of the bottom electrode, annealing is performed in PH3 atmosphere so as to diffuse phosphorus to the grains. Cleaning is performed using hot water (deionized water) in order to remove the impurity product attached onto the surface of the bottom electrode by annealing. A native oxide film formed on the surface of the bottom electrode is removed by cleaning using a mixed solution of hydrofluoric acid and water. A dielectric film and a top electrode are formed in order so as to cover the surface of the bottom electrode. Thereby, a cylindrical capacitor is fabricated.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: November 9, 2004
    Assignee: Sony Corporation
    Inventors: Tomoyuki Hirano, Kazumi Asada
  • Publication number: 20040038154
    Abstract: One example of a separation-material composition for a photo-resist according to the present invention comprises 5.0 weight % of sulfamic acid, 34.7 weight % of H2O, 0.3 weight % of ammonium 1-hydrogen difluoride, 30 weight % of N,N-dimethylacetamide and 30 weight % of diethylene glycol mono-n-buthyl ether. Another example of a separation-material composition for a photo-resist according to the present invention comprises 1-hydroxyethylidene-1, 3.0 weight % of 1-diphosphonic acid, 0.12 weight % of anmonium fluoride, 48.38 weight % of H2O and 48.5 weight % of diethylene glycol mono-n-buthl ether.
    Type: Application
    Filed: August 14, 2003
    Publication date: February 26, 2004
    Inventors: Masafumi Muramatsu, Hayato Iwamoto, Kazumi Asada, Tomoko Suzuki, Toshitaka Hiraga, Tetsuo Aoyama
  • Publication number: 20020098646
    Abstract: Provided is a method of manufacturing a semiconductor device capable of effectively removing impurity product attached to a semiconductor film while suppressing coming off of, for example, hemispherical grains formed on a semiconductor film containing an impurity. Spherical or hemispherical grains are formed on the surface of an amorphous silicon film containing phosphorus which forms a bottom electrode of a capacitor. In order to suppress depletion of the bottom electrode, annealing is performed in PH3 atmosphere so as to diffuse phosphorus to the grains. Cleaning is performed using hot water (deionized water) in order to remove the impurity product attached onto the surface of the bottom electrode by annealing. A native oxide film formed on the surface of the bottom electrode is removed by cleaning using a mixed solution of hydrofluoric acid and water. A dielectric film and a top electrode are formed in order so as to cover the surface of the bottom electrode. Thereby, a cylindrical capacitor is fabricated.
    Type: Application
    Filed: October 19, 2001
    Publication date: July 25, 2002
    Inventors: Tomoyuki Hirano, Kazumi Asada
  • Patent number: 6158141
    Abstract: An apparatus and method for drying semiconductor substrates to dry about 50 semiconductor wafers by evaporating an organic solvent and blowing the evaporated organic solvent onto these semiconductor wafers through a nozzle, comprises the evaporate organic solvent being blown onto the semiconductor wafers from a direction aslant by an angle from 20.degree. to 50.degree. from a vertical direction toward the semiconductor wafers. At this time, the initial spray amount of the evaporated organic solvent is not less than 0.8 cc/second and not more than 1.5 cc/second, additionally, the amount of the organic solvent used for drying is not less than 70 cc/batch and not more than 200 cc/batch.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: December 12, 2000
    Assignees: Sony Corporation, Tokyo Electron Limited
    Inventors: Kazumi Asada, Hayato Iwamoto, Teruomi Minami