Patents by Inventor Takahiko Ishiguro

Takahiko Ishiguro 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: 7514241
    Abstract: An olignucleotide capable of binding to the intramolecular structure-free region of Verotoxin type 1 RNA or Verotoxin type 2 RNA at relatively low and constant temperature, and which can be used in a constant temperature nucleic acid amplification method, is provided. Also, a simple, speedy and highly sensitive method for detecting Verotoxin type 1 RNA or Verotoxin type 2 RNA is provided.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: April 7, 2009
    Assignee: Tosoh Corporation
    Inventors: Takahiro Maruyama, Takahiko Ishiguro, Toshiki Taya
  • Patent number: 7339041
    Abstract: Nucleic acid sequences, oligonucleotides and a method for detection of SRSV, in particular, a virus which belongs to Genotype II (GII), in clinical examinations, public health examinations, food evaluations and food poisoning examinations are provided.
    Type: Grant
    Filed: May 20, 2003
    Date of Patent: March 4, 2008
    Assignee: Tosoh Corporation
    Inventors: Noriyoshi Masuda, Takahiko Ishiguro, Juichi Saito, Toshiki Taya, Kiyoshi Yasukawa
  • Patent number: 7297517
    Abstract: An oligonucleotide for cleavage, detection or amplification of the mecA gene, a gene element of methicillin-resistant Staphylococcus aureus (MRSA), or RNA derived from said gene is provided. Further, a method for detecting the mecA gene is provided.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: November 20, 2007
    Assignee: Tosoh Corporation
    Inventors: Toshiki Taya, Takahiko Ishiguro, Juichi Saito
  • Publication number: 20060228698
    Abstract: An oligonucleotide useful for detection of an RNA derived from HIV-1 consisting of at least 10 consecutive bases in any of SEQ ID NOS:1, 2, 4 to 10 and 13 to 17, which can bind to a specific site of the RNA.
    Type: Application
    Filed: January 27, 2006
    Publication date: October 12, 2006
    Applicant: Tosoh Corporation
    Inventors: Tetsuya Ishizuka, Takahiko Ishiguro, Juichi Saitoh
  • Patent number: 7112407
    Abstract: A simple and accurate method for assay of a single-stranded RNA containing a specific nucleic acids sequence in a sample at almost constant temperature by using at least the following reagents (A) to (I), which comprises a step of adding the reagents (A) to (I) one by one (in any order), in combinations of at least two or all at once and a step of measuring a fluorescent signal in the presence of the reagent (I) at least once after addition of at least the reagents (A) to (H); (A) a first single-stranded oligonucleic acid complementary to a sequence neighboring the 5? end of the specific nucleic acids sequence in the single-stranded RNA, (B) a second single-stranded oligo DNA complementary to a 3?-end sequence within the specific nucleic acids sequence, (C) an RNA-dependent DNA polymerase, (D) deoxyribonucleoside triphosphates, (E) a third single-stranded oligo DNA having (1) a promoter sequence for a DNA-dependent RNA polymerase, (2) an enhancer sequence for the promoter and (3) a 5?-end sequence within the
    Type: Grant
    Filed: October 20, 2003
    Date of Patent: September 26, 2006
    Assignee: Tosoh Corporation
    Inventors: Takahiko Ishiguro, Juichi Saitoh, Tetsuya Ishizuka
  • Patent number: 7105319
    Abstract: An oligonucleotide, capable of specific cleavage and amplification of a pab gene which codes for pab, an antigenic protein of Mycobacterium tuberculosis, or an RNA derived therefrom, as well as being useful in high sensitive detection and identification thereof, is provided. Further, a combination of oligonucleotides, useful in specific amplification, high sensitive detection and identification of an RNA derived from Mycobacterium tuberculosis pab gene as well as a process for detecting Mycobacterium tuberculosis by using said combination, are provided.
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: September 12, 2006
    Assignee: Tosoh Corporation
    Inventors: Shigeo Tsuchiya, Noriyoshi Masuda, Takahiro Maruyama, Takao Matsuba, Takahiko Ishiguro
  • Publication number: 20060134686
    Abstract: An avian myeloblastosis virus reverse transcriptase composition which comprises a heterodimer consisting of an ? subunit having a molecular weight of 68000 and a ? subunit having a molecular weight of 92000 in an amount of at least 80%.
    Type: Application
    Filed: February 10, 2006
    Publication date: June 22, 2006
    Inventors: Kiyoshi Yasukawa, Takahiko Ishiguro
  • Patent number: 7049103
    Abstract: A method of assaying the efficacy and/or toxicity of a test substance by expression of a specific gene in a cell or a microorganism, which comprises treating the cell or the microorganism with the test substance, a step of amplifying an RNA having a sequence homologous or complementary to a specific sequence in a target RNA obtained as the result of transcription of the specific gene, and a step of determining whether the target RNA is transcribed through the expression of the specific gene by detecting the RNA amplified in the previous amplification step.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: May 23, 2006
    Assignee: Tosoh Corporation
    Inventors: Takahiko Ishiguro, Kiyoshi Yasukawa, Shigeo Tsuchiya
  • Patent number: 7049067
    Abstract: An oligonucleotide useful for detection of an RNA derived from HIV-1 consisting of at least 10 consecutive bases in any of SEQ ID NOS:1, 2, 4 to 10 and 13 to 17, which can bind to a specific site of the RNA.
    Type: Grant
    Filed: October 30, 2001
    Date of Patent: May 23, 2006
    Assignee: Tosoh Corporation
    Inventors: Tetsuya Ishizuka, Takahiko Ishiguro, Juichi Saitoh
  • Publication number: 20060099637
    Abstract: An oligonucleotide capable of binding to the intramolecular structure-free region of Verotoxin type 1 RNA or Verotoxin type 2 RNA at relatively low and constant temperature, and which can be used in a constant temperature nucleic acid amplification method, is provided. Also, a simple, speedy and highly sensitive method for detecting Verotoxin type 1 RNA or Verotoxin type 2 RNA is provided.
    Type: Application
    Filed: December 22, 2005
    Publication date: May 11, 2006
    Applicant: TOSOH CORPORATION
    Inventors: Takahiro Maruyama, Takahiko Ishiguro, Toshiki Taya
  • Publication number: 20060094041
    Abstract: An olignucleotide capable of binding to the intramolecular structure-free region of Verotoxin type 1 RNA or Verotoxin type 2 RNA at relatively low and constant temperature, and which can be used in a constant temperature nucleic acid amplification method, is provided. Also, a simple, speedy and highly sensitive method for detecting Verotoxin type 1 RNA or Verotoxin type 2 RNA is provided.
    Type: Application
    Filed: September 23, 2005
    Publication date: May 4, 2006
    Applicant: TOSOH CORPORATION
    Inventors: Takahiro Maruyama, Takahiko Ishiguro, Toshiki Taya
  • Publication number: 20050208575
    Abstract: The present invention provides oligonucleotides for detecting Salmonella toxin gene invA mRNA and stn mRNA which oligonucleotides specifically bind to invA mRNA or stn mRNA at a relatively low temperature (for example, 41° C.) and at a constant temperature, and a process of amplifying Salmonella toxin gene invA mRNA or stn mRNA and a method of detecting the same using the oligonucleotides.
    Type: Application
    Filed: May 17, 2005
    Publication date: September 22, 2005
    Applicant: TOSOH CORPORATION
    Inventors: Akihiro Yokoyama, Takahiko Ishiguro
  • Publication number: 20050208547
    Abstract: The present invention provides oligonucleotides for detecting Salmonella toxin gene invA mRNA and stn mRNA which oligonucleotides specifically bind to invA mRNA or stn mRNA at a relatively low temperature (for example, 41° C.) and at a constant temperature, and a process of amplifying Salmonella toxin gene invA mRNA or stn mRNA and a method of detecting the same using the oligonucleotides.
    Type: Application
    Filed: February 2, 2005
    Publication date: September 22, 2005
    Applicant: TOSOH CORPORATION
    Inventors: Akihiro Yokoyama, Takahiko Ishiguro
  • Patent number: 6893847
    Abstract: The present invention provides oligonucleotides for detecting Salmonella toxin gene invA mRNA and stn mRNA which oligonucleotides specifically bind to invA mRNA or stn mRNA at a relatively low temperature (for example, 41° C.) and at a constant temperature, and a process of amplifying Salmonella toxin gene invA mRNA or stn mRNA and a method of detecting the same using the oligonucleotides.
    Type: Grant
    Filed: January 16, 2002
    Date of Patent: May 17, 2005
    Assignee: Tosoh Corporation
    Inventors: Akihiro Yokoyama, Takahiko Ishiguro
  • Patent number: 6881544
    Abstract: A simple, speedy and sensitive method of detecting HIV-RNA using an oligonucleotide which can bind to an intramolecularly free region of the genomic RNA of HIV-1 at relatively low and constant temperatures (at 35° C. to 50° C., preferably at 41° C.) as an oligonucleotide primer for use in amplification of a nucleic acid.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: April 19, 2005
    Assignee: Tosoh Corporation
    Inventors: Tetsuya Ishizuka, Kiyoshi Yasukawa, Takahiko Ishiguro
  • Publication number: 20050064486
    Abstract: A novel transcriptome analyzing method and to provide a gene found by this method and a protein encoded by the gene. A method for determining whether or not a continued arbitrary DNA sequence existing in the genome of an arbitrary biological species, in which the nucleotide sequence is already known but its possibility of being a gene expression region is unclear (specific region), is the specific region, which comprises detecting whether or not a nucleotide sequence that corresponds to the nucleotide sequence of the region is present in the RNA of the biological species, and a method for determining the gene expression region in an arbitrary region on a genome or the entire genome, which comprises repeatedly carrying out the above method.
    Type: Application
    Filed: September 14, 2004
    Publication date: March 24, 2005
    Inventors: Takahiko Ishiguro, Kiyoshi Yasukawa
  • Publication number: 20040235160
    Abstract: An objective of the present invention is to provide a process for effectively producing hematopoietic stem cells. A process for producing hematopoietic stem cells comprises the step of culturing hematopoietic stem cells in the presence of a gp130 stimulating factor, one or more cytokines and stromal cells.
    Type: Application
    Filed: February 9, 2004
    Publication date: November 25, 2004
    Inventors: Mitsuo Nishikawa, Masatake Osawa, Takahiko Ishiguro, Kiyoshi Yasukawa
  • Publication number: 20040202998
    Abstract: A simple, speedy and sensitive method of detecting HIV-RNA using an oligonucleotide which can bind to an intramolecularly free region of the genomic RNA of HIV-1 at relatively low and constant temperatures (at 35° C. to 50° C., preferably at 41° C.) as an oligonucleotide primer for use in amplification of a nucleic acid.
    Type: Application
    Filed: March 19, 2004
    Publication date: October 14, 2004
    Applicant: TOSOH CORPORATION
    Inventors: Tetsuya Ishizuka, Kiyoshi Yasukawa, Takahiko Ishiguro
  • Patent number: 6756198
    Abstract: An oligonucleotide useful for specific amplification of HCV RNA, or highly sensitive detection and identification of HCV RNA, and a combination thereof. A detection method using RNA amplification step, wherein the oligonucleotide of SEQ ID NO: 11 is used as a first primer and the oligonucleotide of SEQ ID NO: 6 or 7 as a second primer, the oligonucleotide of SEQ ID NO: 12 is used as a first primer and the oligonucleotide of SEQ ID NO: 7 as a second primer, or the oligonucleotide of SEQ ID NO: 13 is used as a first primer and the oligonucleotide of SEQ ID NO: 9 as a second primer.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: June 29, 2004
    Assignee: Tosoh Corporation
    Inventors: Toshiki Taya, Takahiko Ishiguro, Juichi Saito
  • Publication number: 20040115718
    Abstract: A simple and accurate method for assay of a single-stranded RNA containing a specific nucleic acids sequence in a sample at almost constant temperature by using at least the following reagents (A) to (I), which comprises a step of adding the reagents (A) to (I) one by one (in any order), in combinations of at least two or all at once and
    Type: Application
    Filed: October 20, 2003
    Publication date: June 17, 2004
    Applicant: TOSOH CORPORATION
    Inventors: Takahiko Ishiguro, Juichi Saitoh, Tetsuya Ishizuka