Patents by Inventor Kazuhiko Ishikawa

Kazuhiko Ishikawa 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: 9193963
    Abstract: Endoglucanase characterized by a decreased degree of activity inhibition by a lignin-derived aromatic compound, and prepared by substituting tryptophan at position 273 in the amino acid sequence of wild-type thermophilic bacterium-derived endoglucanase with an amino acid other than aromatic amino acids.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: November 24, 2015
    Assignees: Toray Industries, Inc., National Institute of Advanced Industrial Science and Technology
    Inventors: Hiroyuki Kurihara, Takeshi Tsukada, Katsushige Yamada, Yumiko Mishima, Yuka Maeno, Kazuhiko Ishikawa
  • Publication number: 20150284699
    Abstract: The purpose of the present invention is to provide a novel xylanase having various excellent enzymological properties, and that is suitable for industrial applications. The polypeptide is selected from the group consisting of (a), (b), and (c) below: (a) a polypeptide comprising an amino acid sequence selected from SEQ ID NOs: 1 to 7; (b) a polypeptide having xylanase activity and comprising an amino acid sequence selected from SEQ ID NOs: 1 to 7, the amino acid sequence having substitution, deletion, insertion, and/or addition of one or several amino acid residues; and (c) a polypeptide having xylanase activity and comprising an amino acid sequence having at least 80% identity with an amino acid sequence selected from SEQ ID NOs. 1 to 7.
    Type: Application
    Filed: October 18, 2013
    Publication date: October 8, 2015
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kazuhiko Ishikawa, Hiroyuki Inoue
  • Patent number: 9080164
    Abstract: A ?-glucosidase exhibits high activity in the presence of biomass and has high thermal stability compared to conventional enzymes. The ?-glucosidase includes substitutions and/or deletions of amino acids, at least three amino acids selected from the group consisting of Glu39, Asp169, Arg170, Arg220, Tyr227, and Glu330, of the parent ?-glucosidase with other amino acids and exhibits a decomposition activity.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: July 14, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Katsushige Yamada, Kazuhiko Ishikawa, Yumiko Mishima, Yasunobu Wada, Yuji Kado
  • Patent number: 9034627
    Abstract: A method for producing a mutant glucosidase includes introducing DNA encoding a secretion signal sequence and DNA encoding Asn-X-Ser or Asn-X-Thr into DNA encoding a glucosidase derived from a thermophile, and introducing the resulting DNA into a eukaryotic microorganism and expressing it as a secretory protein. An enzyme composition contains the mutant glucosidase.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: May 19, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Shiomi Watanabe, Katsushige Yamada, Kazuhiko Ishikawa, Yasunobu Wada, Yuji Kado
  • Publication number: 20140178947
    Abstract: Endoglucanase characterized by a decreased degree of activity inhibition by a lignin-derived aromatic compound, and prepared by substituting tryptophan at position 273 in the amino acid sequence of wild-type thermophilic bacterium-derived endoglucanase with an amino acid other than aromatic amino acids.
    Type: Application
    Filed: March 4, 2014
    Publication date: June 26, 2014
    Applicants: National Institute of Advanced Industrial Science and Technology, Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Takeshi Tsukada, Katsushige Yamada, Yumiko Mishima, Yuka Maeno, Kazuhiko Ishikawa
  • Publication number: 20140127759
    Abstract: A ?-glucosidase exhibits high activity in the presence of biomass and has high thermal stability compared to conventional enzymes. The ?-glucosidase includes substitutions and/or deletions of amino acids, at least three amino acids selected from the group consisting of Glu39, Asp169, Arg170, Arg220, Tyr227, and Glu330, of the parent ?-glucosidase with other amino acids and exhibits a decomposition activity.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: Toray Industries, Inc.
    Inventors: Hiroyuki Kurihara, Katsushige Yamada, Kazuhiko Ishikawa, Yumiko Mishima, Yasunobu Wada, Yuji Kado
  • Patent number: 7481587
    Abstract: An optical element used in a bidirectional optical communication module used for bidirectional optical fiber communication by a wavelength multiplex system, comprising a diffraction grating of binary structure prepared by molding, wherein a taper is formed at a portion of the diffraction grating where light entering the diffraction grating is intercepted by a convex part of the binary structure of the diffraction grating.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: January 27, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Hajime Kobayashi, Yayoi Eguro, Nobuyoshi Mori, Hiroyuki Hattori, Yoshiharu Masaki, Fumiaki Yoshida, Yuichi Atarashi, Kazuhiro Wada, Kazuhiko Ishikawa
  • Publication number: 20080162380
    Abstract: A support system for installing a photovoltaic power generator includes: display means for displaying an installation surface image including an installation surface on which photovoltaic modules are to be installed and a gauge disposed on the installation surface and whose actual dimensions are known, the installation surface being a region of a finite area; installation surface input means for receiving inputs for specifying the installation surface on the installation surface image displayed on the display means; installation surface shape specification means for specifying an installation surface shape on the basis of the dimensions of the gauge in the installation surface image; and module determination means for determining a type and layout of the photovoltaic modules suitable for the installation surface shape.
    Type: Application
    Filed: December 19, 2007
    Publication date: July 3, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Yoshikazu SUGA, Kazuhiko Ishikawa
  • Publication number: 20070237458
    Abstract: An optical element used in a bidirectional optical communication module used for bidirectional optical fiber communication by a wavelength multiplex system, comprising a diffraction grating of binary structure prepared by molding, wherein a taper is formed at a portion of the diffraction grating where light entering the diffraction grating is intercepted by a convex part of the binary structure of the diffraction grating.
    Type: Application
    Filed: March 22, 2007
    Publication date: October 11, 2007
    Inventors: Hajime Kobayashi, Yayoi Eguro, Nobuyoshi Mori, Hiroyuki Hattori, Yoshiharu Masaki, Fumiaki Yoshida, Yuichi Atarashi, Kazuhiro Wada, Kazuhiko Ishikawa
  • Patent number: 6960454
    Abstract: The invention relates to a thermophilic enzyme having ?-glycosidase activity which comprises the amino acid sequence of SEQ ID NO: 2 in which one or a plurality of amino acid residues may be deleted, replaced or added.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: November 1, 2005
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Hiroyasu Ishida, Yoshitsugu Kosugi
  • Patent number: 6949729
    Abstract: A microwave oven, a relay box communicating with the microwave oven and a personal computer communicating with the relay box are provided in private. The personal computer is connected to a host computer storing home page information, through the public Internet. A home page storing unit of the host computer stores, corresponding to each of a plurality of cooking recipes, recipe data directly recognized by microwave oven including heating control data for heating and cooking the cooking recipe by the microwave oven, a button to be operated for transferring the recipe data through the Internet to personal computer and image display data for displaying information related to the cooking recipe as a home page image display. Therefore, in accordance with the heating control data downloaded and supplied to personal computer, microwave oven is controlled to heat and cook the desired cooking recipe.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: September 27, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiko Ishikawa, Tooru Fujikawa, Tomoko Ota
  • Patent number: 6936802
    Abstract: On a home page of a home page storing unit (421) of a host computer (4), information related to a plurality of recipes and recipe data (MI) corresponding to each of the plurality of recipes are included. The recipe data includes a heating control code (DS141) common among different types of microwave ovens (1) for heating and cooking the corresponding recipe. The microwave oven has a memory (11A) that stores a plurality of different pieces of procedure information (heating sequence FLi, heating mode data MDi, heater down time data HDT) indicating procedure matching the type, for executing a heating operation. The microwave oven performs the heating operation in accordance with one or more pieces of procedure information read from the memory (11A) based on the heating control code.
    Type: Grant
    Filed: June 4, 2001
    Date of Patent: August 30, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiko Ishikawa, Kazuo Wanda
  • Publication number: 20050164350
    Abstract: The inventors isolated from hyperthermophilic archaebacteria Aeropyrum pernix a heat resistant thioredoxin, thioredoxin reductase and thioredoxin peroxidase having at least 50% residual activity after heat treatment at 100° C. for 0.5 hour, and sequenced the amino acid and base sequences. The inventors also isolated from hyperthermophilic archaebacteria Pyrococcus horikoshii a heat resistant thioredoxin, thioredoxin reductase, and thioredoxin peroxidase showing substantially no decline in activity when heat treated at 100° C. for 0.5 hour, and sequenced the amino acid and base sequences.
    Type: Application
    Filed: March 18, 2005
    Publication date: July 28, 2005
    Inventors: Kazuhiko Ishikawa, Sung-jong Jeon, Yasuhiro Kashima
  • Publication number: 20040259123
    Abstract: A heat-resistant ligase isolated from Aeropyrum pernix, and homologues thereof, the activity of which is not substantially decreased by heat treatment at 100° C., is disclosed.
    Type: Application
    Filed: February 19, 2004
    Publication date: December 23, 2004
    Applicant: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kazuhiko Ishikawa, Sung-Jong Joen
  • Publication number: 20040161826
    Abstract: The invention is directed to novel thermostable aminotransferases useful in synthesizing an amino acid derivative with high optical purity, and nucleic acids encoding the enzyme. The invention also includes antibodies that specifically bind to the aminotransferases of the invention.
    Type: Application
    Filed: March 26, 2004
    Publication date: August 19, 2004
    Applicant: National Institute of Advanced Industrial Science and Technology, a Tokyo, Japan corporation
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Hiroyasu Ishida, Yoshitsugu Kosugi, Eriko Matsui
  • Patent number: 6744026
    Abstract: Cooking information (CI) concerning different dishes is preliminarily registered as a standard in a mask ROM (11A) or the like of a microwave oven (1), to enable automatic cooking of a variety of dishes for every user. In practice, however, the dishes which each user cooks by a microwave oven is limited to a few of them. Then, the user selects and registers a standard recipe name (HN) of only his/her favorite dish in the mask ROM into a favorite menu in a non-volatile memory (11B). In order to execute cooking of a desired dish registered in the favorite menu, the standard recipe name of the desired dish is read not from the mask ROM but from the non-volatile memory and displayed on an LCD panel (13), so that the user needs only perform an operation to instruct start of heating through an input unit (15).
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: June 1, 2004
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Kazuhiko Ishikawa
  • Publication number: 20040002075
    Abstract: The inventor isolated heat-resistant cysteine synthase having substantially no decline in activity after heat treatment at 80° C. for 6 hours from the hyperthermophilic archaea Aeropyrum pernix, and determined the amino acid sequence and base sequence. The DNA encoding this enzyme is DNA consisting of the base sequence set forth in SEQ ID NO: 1. The enzyme has the amino acid sequence set forth in SEQ ID NO: 2. The enzyme can be used to carry out an efficient enzyme reaction on highly concentrated substrates prepared at elevated temperatures.
    Type: Application
    Filed: November 21, 2002
    Publication date: January 1, 2004
    Inventors: Kazuhiko Ishikawa, Koshiki Mino
  • Publication number: 20030235902
    Abstract: The inventors isolated from hyperthermophilic archaebacteria Aeropyrum pernix a heat resistant thioredoxin, thioredoxin reductase and thioredoxin peroxidase having at least 50% residual activity after heat treatment at 100° C. for 0.5 hour, and sequenced the amino acid and base sequences. The inventors also isolated from hyperthermophilic archaebacteria Pyrococcus horikoshii a heat resistant thioredoxin, thioredoxin reductase, and thioredoxin peroxidase showing substantially no decline in activity when heat treated at 100° C. for 0.5 hour, and sequenced the amino acid and base sequences.
    Type: Application
    Filed: December 10, 2002
    Publication date: December 25, 2003
    Inventors: Kazuhiko Ishikawa, Sung-Jong Jeon, Yasuhiro Kashima
  • Publication number: 20030141295
    Abstract: On a home page of a home page storing unit (421) of a host computer (4), information related to a plurality of recipes and recipe data (MI) corresponding to each of the plurality of recipes are included. The recipe data includes a heating control code (DS141) common among different types of microwave ovens (1) for heating and cooking the corresponding recipe. The microwave oven has a memory (11A) that stores a plurality of different pieces of procedure information (heating sequence FLi, heating mode data MDi, heater down time data HDT) indicating procedure matching the type, for executing a heating operation. The microwave oven performs the heating operation in accordance with one or more pieces of procedure information read from the memory (11A) based on the heating control code.
    Type: Application
    Filed: November 7, 2002
    Publication date: July 31, 2003
    Inventors: Kazuhiko Ishikawa, Kazuo Wanda
  • Publication number: 20030129723
    Abstract: The present invention provides a polypeptide that has a thermophilic endoglucanase activity, a DNA that comprises a nucleotide sequence encoding the polypeptide, a recombinant DNA and an expression vector that comprise the DNA, a transformant that is transformed by the expression vector, and a method of producing the polypeptide using the transformant. The endoglucanase of the present invention shows a maximum activity at a high temperature range around 97° C., so that it is industrially useful.
    Type: Application
    Filed: November 14, 2002
    Publication date: July 10, 2003
    Applicant: RAKUTO KASEI INDUSTRIAL CO., LTD.
    Inventors: Kazuhiko Ishikawa, Hiroyasu Ishida, Yoshitsugu Kosugi, Susumu Ando, Akio Shimomura