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).

  • Publication number: 20030082720
    Abstract: The present invention relates to novel nucleic acids encoding a mammalian WNK, and proteins encoded thereby, preferably, human WNK1 and human WNK4. These novel nucleic acids, and mutant forms thereof, are associated with, inter alia, renal electrolyte handling, hypertension, and pseudohypoaldosterism type II (PHA II). That is, the present invention relates to novel mutations (e.g., deletions and missense mutations in an exon, intron, or both, of a nucleic acid encoding a WNK) that mediate and/or are associated with altered expression, among other things. These mutations are, in turn, associated with and/or mediate disease (e.g., hypertension, PHA II, and the like). Thus, these nucleic acids provide a novel target for treatment, diagnosis, and development of therapeutics to treat these diseases.
    Type: Application
    Filed: July 17, 2002
    Publication date: May 1, 2003
    Inventors: Richard P. Lifton, Frederick H. Wilson, Keith Choate, Carol Nelson-Williams, Kazuhiko Ishikawa
  • Publication number: 20020121514
    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: Application
    Filed: March 11, 2002
    Publication date: September 5, 2002
    Inventor: Kazuhiko Ishikawa
  • Publication number: 20020102635
    Abstract: The invention relates to a thermophilic enzyme having &bgr;-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: Application
    Filed: August 6, 1999
    Publication date: August 1, 2002
    Inventors: IKUO MATSUI, KAZUHIKO ISHIKAWA, HIROYASU ISHIDA, YOSHITSUGU KOSUGI
  • Publication number: 20020081697
    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: September 28, 2001
    Publication date: June 27, 2002
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Hiroyasu Ishida, Yoshitsugu Kosugi, Eriko Matsui
  • Patent number: 6391604
    Abstract: A thermostable phosphatidylethanolamine N-methyltransferase and a process for producing the enzyme are provided. A host cell is transformed with an expression vector containing DNA encoding a thermostable enzyme derived from hyper-thermophilic archaea such as Pyrococcus, the enzyme having phosphatidylethanolamine N-methyltransferase activity and an optimum temperature of 90° C. or higher, and the transformed host cell is cultured.
    Type: Grant
    Filed: March 3, 2000
    Date of Patent: May 21, 2002
    Assignee: Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Hiroyasu Ishida, Yoshitsugu Kosugi, Yasutaka Tahara
  • Patent number: 6255081
    Abstract: The present invention relates to a thermostable Flap endonuclease whose optimum temperature is 75° C. or more and DNA coding for (a) a protein consisting of the amino acid sequence shown in SEQ ID NO:2 or (b) a protein with Flap endonuclease activity, consisting of an amino acid sequence where in the amino acid sequence (a), one or more amino acids are deleted, substituted or added. According to the present invention, there is provided a thermostable Flap endonuclease whose optimum temperature for reaction is 75° C. or more. Further, this enzyme is thermally stable, so it becomes possible to develop new techniques of conducting artificial homologous recombination or genetic shuffling highly efficiently by coupling the enzyme reaction with PCR.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: July 3, 2001
    Assignee: Director - General of Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Yoshitsugu Kosugi, Eriko Matsui, Satoko Kawasaki
  • Patent number: 6251649
    Abstract: The present invention relates to a thermostable Flap endonuclease whose optimum temperature is 75° C. or more and DNA coding for (a) a protein consisting of the amino acid sequence shown in SEQ ID NO:2 or (b) a protein with Flap endonuclease activity, consisting of an amino acid sequence where in the amino acid sequence (a), one or more amino acids are deleted, substituted or added. According to the present invention, there is provided a thermostable Flap endonuclease whose optimum temperature for reaction is 75° C. or more. Further, this enzyme is thermally stable, so it becomes possible to develop new techniques of conducting artificial homologous recombination or genetic shuffling highly efficiently by coupling the enzyme reaction with PCR.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: June 26, 2001
    Assignee: Director - General of Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Yoshitsugu Kosugi, Eriko Matsui, Satoko Kawasaki
  • Patent number: 6133012
    Abstract: An acyl peptide hydrolase having an optimum temperature range of 90-95.degree. C. and a gene encoding the same are disclosed. With the above enzyme, it becomes possible to conduct amino terminal analysis of acylated proteins and peptides at high temperatures.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: October 17, 2000
    Assignee: Director General of Agency of Industrial Science & Technology
    Inventors: Kazuhiko Ishikawa, Ikuo Matsui, Hiroyasu Ishida, Yoshitsugu Kosugi, Katsuhiko Higuchi
  • Patent number: 6064050
    Abstract: A cooking apparatus includes an external memory for storing methods of cooking various dishes, genre keys to specify one out of a plurality of large groups of cooking methods produced by specifying cooking methods stored in external memory depending upon the kind of cooking, a liquid crystal display for displaying items corresponding to the one group of cooking methods specified by the genre key, select keys for selecting one out of items corresponding to the one group of cooking methods displayed on liquid crystal display, and a microcomputer for controlling a cooking operation based on the item selected by select key.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: May 16, 2000
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiko Ishikawa, Kazuo Wanda
  • Patent number: 6001626
    Abstract: Disclosed are a thermophilic phospholipase having an optimum temperature range of 95 to 105.degree. C. which is useful in high-temperature degumming processes in oil refining process and high-temperature processing of phospholipids; and a method for producing a thermophilic phospholipase comprising culturing a microorganism capable of producing the phospholipase in a culture medium and collecting the phospholipase from the resultant culture.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: December 14, 1999
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Yoshitsugu Kosugi, Katsuhiko Higuchi, Kazuhiko Ishikawa, Ikuo Matsui, Joh Yong-Goe
  • Patent number: 5866408
    Abstract: Producing a xylanase enzyme of superior performance in the bleaching of pulp. More specifically, a modified xylanase of Family 11 that shows improved thermophilicity, alkalophilicity, and thermostability as compared to the natural xylanase. The modified xylanases contain any of three types of modifications: (1) changing amino acids 10, 27, and 29 of Trichoderma reesei xylanase II or the corresponding amino acids of another Family 11 xylanase, where these amino acids are changed to histidine, methionine, and leucine, respectively; (2) substitution of amino acids in the N-terminal region with amino acids from another xylanase enzyme. In a preferred embodiment, substitution of the natural Bacillus circulans or Trichoderma reesei xylanase with a short sequence of amino acids from Thermomonospora fusca xylanase yielded chimeric xylanases with higher thermophilicity and alkalophilicity; (3) an extension upstream of the N-terminus of up to 10 amino acids.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: February 2, 1999
    Assignee: National Research Council of Canada
    Inventors: Wing L. Sung, Makoto Yaguchi, Kazuhiko Ishikawa
  • Patent number: 5759840
    Abstract: Producing a xylanase enzyme of superior performance in the bleaching of pulp. More specifically, a modified xylanase of Family 11 that shows improved thermophilicity, alkalophilicity, and thermostability as compared to the natural xylanase. The modified xylanases contain any of three types of modifications: (1) changing amino acids 10, 27, and 29 of Trichoderma reesei xylanase II or the corresponding amino acids of another Family 11 xylanase, where these amino acids are changed to histidine, methionine, and leucine, respectively; (2) substitution of amino acids in the N-terminal region with amino acids from another xylanase enzyme. In a preferred embodiment, substitution of the natural Bacillus circulans or Trichoderma reesei xylanase with a short sequence of amino acids from Thermomonospora fusca xylanase yielded chimeric xylanases with higher thermophilicity and alkalophilicity; (3) an extension upstream of the N-terminus of up to 10 amino acids.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: June 2, 1998
    Assignee: National Research Council of Canada
    Inventors: Wing L. Sung, Makoto Yaguchi, Kazuhiko Ishikawa
  • Patent number: 5635378
    Abstract: There is disclosed a variant-type carbohydrate hydrolase that has been increased transglycosylation activity by substituting another amino acid residue for the tyrosine residue that is present in the active center of the hydrolase, which hydrolase is an amylase or an enzyme analogous to amylase; a gene or a DNA sequence of the carbohydrate hydrolase with mutation introduced into the base sequence that encodes the tyrosine residue; and a vector or a transformant which comprises the DNA sequence. There is also disclosed a method for producing a variety of oligosaccharides and the like by using the variant-type carbohydrate hydrolase.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: June 3, 1997
    Assignee: Director-General of Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Sachio Miyairi, Koichi Honda
  • Patent number: 5631149
    Abstract: There is disclosed a variant-type carbohydrate hydrolase that has been increased transglycosylation activity by substituting another amino acid residue for the tyrosine residue that is present in the active center of the hydrolase, which hydrolase is an amylase or an enzyme analogous to amylase; a gene or a DNA sequence of the carbohydrate hydrolase with mutation introduced into the base sequence that encodes the tyrosine residue; and a vector or a transformant which comprises the DNA sequence. There is also disclosed a method for producing a variety of oligosaccharides and the like by using the variant-type carbohydrate hydrolase.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: May 20, 1997
    Assignee: Director-General Of Agency of Industrial Science and Technology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Sachio Miyairi, Koichi Honda
  • Patent number: 5538882
    Abstract: There is disclosed a variant-type carbohydrate hydrolase that has been increased transglycosylation activity by substituting another amino acid residue for the tyrosine residue that is present in the active center of the hydrolase, which hydrolase is an amylase or an enzyme analogous to amylase; a gene or a DNA sequence of the carbohydrate hydrolase with mutation introduced into the base sequence that encodes the tyrosine residue; and a vector or a transformant which comprises the DNA sequence. There is also disclosed a method for producing a variety of oligosaccharides and the like by using the variant-type carbohydrate hydrolase.
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: July 23, 1996
    Assignee: Director-General of Agency of Industrial Science and Techology
    Inventors: Ikuo Matsui, Kazuhiko Ishikawa, Sachio Miyairi, Koichi Honda
  • Patent number: 5379409
    Abstract: An operation signal from a remote operation input device, e.g., a keyboard is converted into a transmission signal, and the transmission signal is output onto a communication line. The operation signal transmitted through the communication line is decoded, and the decoded signal is supplied to an input device connector of a computer. The computer having no communication function can be remotely operated upon operation of the input device. A video signal output from the computer is encoded, and is displayed on a display device arranged near the input device through another communication line. The presence/absence of a malfunction of the computer, and a malfunctioning point can be checked on the basis of an input to the input device, and a displayed image.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: January 3, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kazuhiko Ishikawa
  • Patent number: 4894518
    Abstract: An electric oven such as a toaster oven according to this invention includes in addition to a heating chamber, a heater for the heating chamber and a temperature detector for measuring the temperature therein, a control device serving to automatically determine a target temperature on the basis of the initial temperature inside the heating chamber so that a desired degree of heating can be effected independently of the initial temperature inside the heating chamber by switching off the power supply when the detected temperature reaches the target temperature thus set.
    Type: Grant
    Filed: January 6, 1989
    Date of Patent: January 16, 1990
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuhiko Ishikawa, Yoichi Takahashi
  • Patent number: 4707588
    Abstract: A convection cooking apparatus including an oven temperature sensing element and a food temperature sensing probe. In response to an output signal from the oven temperature sensing element, the oven temperature is maintained at a desired value. When the food temperature reaches a desired value, a control system develops a control signal to terminate the cooking operation. That is, the cooking operation is performed under a desired oven temperature, and the cooking completion is determined in accordance with both the actual food temperature and the oven temperature.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: November 17, 1987
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Takazume, Kazuhiko Ishikawa
  • Patent number: 4633065
    Abstract: A convection cooking apparatus including an oven temperature sensing element and a food temperature sensing probe. In response to an output signal from the oven temperature sensing element, the oven temperature is maintained at a desired value. When the food temperature reaches a desired value, a control system develops a control signal to terminate the cooking operation. That is, the cooking operation is performed under a desired oven temperature, and the cooking completion is determined in accordance with the actual food temperature.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: December 30, 1986
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masafumi Takazume, Kazuhiko Ishikawa