Patents by Inventor Masahiro Asakura

Masahiro Asakura 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: 11193162
    Abstract: Very simple, highly sensitive detection or quantification of target nucleic acids of interest has been achieved by: hybridizing mask oligonucleotides to regions in a single-stranded region of a nucleic acid to be assayed between which a region to be hybridized by an oligonucleotide probe is positioned, thereby opening the probe-hybridizing region and keeping the single-stranded region of the target nucleic acid stable, and then subjecting this nucleic acid having the single-stranded region to nucleic acid chromatography.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: December 7, 2021
    Assignee: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Norihiko Sugimoto, Souji Eda, Masahiro Asakura, Kanako Abe, Hirotsugu Uehara, Kazumasa Kamei, Yoshihiko Uesaka, Yuichi Oku, Yusuke Shibahara
  • Patent number: 11174310
    Abstract: The present invention provides antibodies that show specific reactivity to disulfide-type HMGB1. Furthermore, the present invention provides methods for specifically measuring disulfide-type HMGB1 using the antibodies, and kits or reagents for the measurement. The present invention also provides methods for measuring total HMGB1 using such an antibody and an antibody that binds to both disulfide-type HMGB1 and reduced-type HMGB1 but does not bind to des-HMGB1, and kits or reagents for the measurement.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 16, 2021
    Assignee: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Masahiro Asakura, Aya Keshi, Kanako Abe, Nana Sakamoto, Shiho Yamazaki, Hirotsugu Uehara
  • Patent number: 11160286
    Abstract: The present invention has demonstrated that microorganisms present in a liver can be killed by washing the bile duct and the portal vein with hot water, and then disinfecting the liver using a chlorine-based disinfectant. It has also been demonstrated that sterilizing effects can be enhanced by freezing the liver after disinfection with a chlorine-based disinfectant.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: November 2, 2021
    Assignees: OSAKA NANKO ZOKI JAPAN, LTD., FUSO PHARMACEUTICAL INDUSTRIES, LTD.
    Inventors: Shinji Yamasaki, Atsushi Hinenoya, Iwao Morikochi, Mamoru Yamaguchi, Yukitoshi Sakuramoto, Kazumasa Nishida, Masahiro Asakura
  • Publication number: 20190375834
    Abstract: The present invention provides antibodies that show specific reactivity to disulfide-type HMGB1. Furthermore, the present invention provides methods for specifically measuring disulfide-type HMGB1 using the antibodies, and kits or reagents for the measurement. The present invention also provides methods for measuring total HMGB1 using such an antibody and an antibody that binds to both disulfide-type HMGB1 and reduced-type HMGB1 but does not bind to des-HMGB1, and kits or reagents for the measurement.
    Type: Application
    Filed: October 19, 2017
    Publication date: December 12, 2019
    Inventors: Masahiro Asakura, Aya Keshi, Kanako Abe, Nana Sakamoto, Shiho Yamazaki, Hirotsugu Uehara
  • Publication number: 20190159468
    Abstract: The present invention has demonstrated that microorganisms present in a liver can be killed by washing the bile duct and the portal vein with hot water, and then disinfecting the liver using a chlorine-based disinfectant. It has also been demonstrated that sterilizing effects can be enhanced by freezing the liver after disinfection with a chlorine-based disinfectant.
    Type: Application
    Filed: January 25, 2019
    Publication date: May 30, 2019
    Inventors: Shinji YAMASAKI, Atsushi HINENOYA, Iwao MORIKOCHI, Mamoru YAMAGUCHI, Yukitoshi SAKURAMOTO, Kazumasa NISHIDA, Masahiro ASAKURA
  • Publication number: 20180246121
    Abstract: It was found that when measuring HMGB1 in samples using antibodies that bind to both HMGB2 and HMGB1, the reaction between HMGB2 and HMGB1 antibodies can be suppressed by coexisting HMGB2 absorbents (HMGB2 antibodies and/or HMGB2-derived peptides that inhibit the binding between HMGB2 and HMGB1 antibodies). More specifically, it was revealed that HMGB1 alone in samples can be measured or detected by contacting the samples with HMGB1 antibodies in the presence of HMGB2 absorbents.
    Type: Application
    Filed: August 19, 2016
    Publication date: August 30, 2018
    Applicants: Fuso Pharmaceutical Industries, Ltd., Canon Kabushiki Kaisha
    Inventors: Masahiro Asakura, Aya Keshi, Masaaki Kobayashi
  • Patent number: 9663828
    Abstract: An objective of the present invention is to provide the cytolethal distending toxin (CDT) of C. hyointestinalis and polynucleotides encoding it, and novel methods for detection of C. hyointestinalis using the cdt genes. The present inventors focused on the cytolethal distending toxin (CDT) of Campylobacter bacteria, and detected the cdt genes of a Campylobacter-like bacterium isolated from an enteritis patient in Thailand. The present inventors discovered a bacterial strain whose cdtB gene was amplified by common primers in C. jejuni, C. coli, and C. fetus, but not by multiplex PCR that can specifically detect the cdtA, cdtB, and cdtC genes of the three bacterial species. The bacterial strain was identified as C. hyointestinalis by 16S rRNA gene analysis. Furthermore, the entire nucleotide sequence of the cdt genes was determined by genome walking upstream and downstream of the cdtB gene.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 30, 2017
    Assignees: Osaka Prefecture University Public Corporation, Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Worada Samosorunsuk, Masahiro Asakura
  • Patent number: 9648666
    Abstract: To provide a warming temperature control device which prevents overheating with high accuracy and stability to ensure safety and is excellent in economy, between both electrodes of a DC stabilization power supply which drives a temperature control section, a fixed resistor with which a capacitor is connected in parallel, a first diode disposed in a forward direction with respect to the power supply, and a temperature detection element wire are connected in series, and an inter-wire short circuit protection circuit is included. A degree of leak of a polymer layer is determined by detecting a difference between a maximum value and a minimum value of an input signal to the temperature control section on a time axis. When the difference increases to reach a predetermined set value, the temperature control section performs control such that a heating signal is not outputted.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 9, 2017
    Assignee: Hongkong Tachibana Electronics Co., Ltd.
    Inventors: Takashi Nomura, Masahiro Asakura
  • Publication number: 20170037457
    Abstract: Very simple, highly sensitive detection or quantification of target nucleic acids of interest has been achieved by: hybridizing mask oligonucleotides to regions in a single-stranded region of a nucleic acid to be assayed between which a region to be hybridized by an oligonucleotide probe is positioned, thereby opening the probe-hybridizing region and keeping the single-stranded region of the target nucleic acid stable, and then subjecting this nucleic acid having the single-stranded region to nucleic acid chromatography.
    Type: Application
    Filed: January 29, 2015
    Publication date: February 9, 2017
    Inventors: Norihiko Sugimoto, Souji Eda, Masahiro Asakura, Kanako Abe, Hirotsugu Uehara, Kazumasa Kamei, Yoshihiko Uesaka, Yuichi Oku, Yusuke Shibahara
  • Publication number: 20170006663
    Abstract: To provide a warming temperature control device which prevents overheating with high accuracy and stability to ensure safety and is excellent in economy, between both electrodes of a DC stabilization power supply which drives a temperature control section, a fixed resistor with which a capacitor is connected in parallel, a first diode disposed in a forward direction with respect to the power supply, and a temperature detection element wire are connected in series, and an inter-wire short circuit protection circuit is included. A degree of leak of a polymer layer is determined by detecting a difference between a maximum value and a minimum value of an input signal to the temperature control section on a time axis. When the difference increases to reach a predetermined set value, the temperature control section performs control such that a heating signal is not outputted.
    Type: Application
    Filed: December 17, 2015
    Publication date: January 5, 2017
    Inventors: Takashi NOMURA, Masahiro ASAKURA
  • Patent number: 9200330
    Abstract: An objective of the present invention is to provide the cytolethal distending toxin (CDT) of C. hyointestinalis and polynucleotides encoding it, and novel methods for detection of C. hyointestinalis using the cdt genes. The present inventors focused on the cytolethal distending toxin (CDT) of Campylobacter bacteria, and detected the cdt genes of a Campylobacter-like bacterium isolated from an enteritis patient in Thailand. The present inventors discovered a bacterial strain whose cdtB gene was amplified by common primers in C. jejuni, C. coli, and C. fetus, but not by multiplex PCR that can specifically detect the cdtA, cdtB, and cdtC genes of the three bacterial species. The bacterial strain was identified as C. hyointestinalis by 16S rRNA gene analysis. Furthermore, the entire nucleotide sequence of the cdt genes was determined by genome walking upstream and downstream of the cdtB gene.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: December 1, 2015
    Assignees: Osaka Prefecture University, Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Masahiro Asakura
  • Publication number: 20150184230
    Abstract: An objective of the present invention is to provide the cytolethal distending toxin (CDT) of C. hyointestinalis and polynucleotides encoding it, and novel methods for detection of C. hyointestinalis using the cdt genes. The present inventors focused on the cytolethal distending toxin (CDT) of Campylobacter bacteria, and detected the cdt genes of a Campylobacter-like bacterium isolated from an enteritis patient in Thailand. The present inventors discovered a bacterial strain whose cdtB gene was amplified by common primers in C. jejuni, C. coli, and C. fetus, but not by multiplex PCR that can specifically detect the cdtA, cdtB, and cdtC genes of the three bacterial species. The bacterial strain was identified as C. hyointestinalis by 16S rRNA gene analysis. Furthermore, the entire nucleotide sequence of the cdt genes was determined by genome walking upstream and downstream of the cdtB gene.
    Type: Application
    Filed: October 11, 2013
    Publication date: July 2, 2015
    Applicants: FUSO PHARMACEUTICAL INDUSTRIES, LTD., Osaka Prefecture University Public Corporation
    Inventors: Shinji YAMASAKI, Worada SAMOSORUNSUK, Masahiro ASAKURA
  • Publication number: 20150147447
    Abstract: The present invention has demonstrated that microorganisms present in a liver can be killed by washing the bile duct and the portal vein with hot water, and then disinfecting the liver using a chlorine-based disinfectant. It has also been demonstrated that sterilizing effects can be enhanced by freezing the liver after disinfection with a chlorine-based disinfectant.
    Type: Application
    Filed: May 31, 2013
    Publication date: May 28, 2015
    Applicant: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Atsushi Hinenoya, Iwao Morikochi, Mamoru Yamaguchi, Yukitoshi Sakuramoto, Kazumasa Nishida, Masahiro Asakura
  • Patent number: 8586327
    Abstract: An objective of the present invention is to provide the cytolethal distending toxin (CDT) of C. hyointestinalis and polynucleotides encoding it, and novel methods for detection of C. hyointestinalis using the cdt genes. The present inventors focused on the cytolethal distending toxin (CDT) of Campylobacter bacteria, and detected the cdt genes of a Campylobacter-like bacterium isolated from an enteritis patient in Thailand. The present inventors discovered a bacterial strain whose cdtB gene was amplified by common primers in C. jejuni, C. coli, and C. fetus, but not by multiplex PCR that can specifically detect the cdtA, cdtB, and cdtC genes of the three bacterial species. The bacterial strain was identified as C. hyointestinalis by 16S rRNA gene analysis. Furthermore, the entire nucleotide sequence of the cdt genes was determined by genome walking upstream and downstream of the cdtB gene.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: November 19, 2013
    Assignees: Osaka Prefecture University, Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Worada Samosorunsuk, Masahiro Asakura
  • Patent number: 8354500
    Abstract: The present inventors succeeded in cloning the CDT genes of C. coli and C. fetus, which were previously unknown, and in determining their sequences. In addition, the inventors also developed specific primers and primers common to the two species by comparing the CDTs of C. jejuni and C. fetus. Furthermore, the inventors demonstrated that these primers were applicable to multiplex PCR that simultaneously allows for the rapid and convenient determination of the presence of Campylobacter CDT and identification of species, and that they can also be used in PCR-RFLP-based typing.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: January 15, 2013
    Assignee: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Masahiro Asakura
  • Patent number: 8343723
    Abstract: The present inventors succeeded in cloning the CDT genes of C. coli and C. fetus, which were previously unknown, and in determining their sequences. In addition, the inventors also developed specific primers and primers common to the two species by comparing the CDTs of C. jejuni and C. fetus. Furthermore, the inventors demonstrated that these primers were applicable to multiplex PCR that simultaneously allows for the rapid and convenient determination of the presence of Campylobacter CDT and identification of species, and that they can also be used in PCR-RFLP-based typing.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: January 1, 2013
    Assignee: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Masahiro Asakura
  • Publication number: 20120258517
    Abstract: The present inventors succeeded in cloning the CDT genes of C. coli and C. fetus, which were previously unknown, and in determining their sequences. In addition, the inventors also developed specific primers and primers common to the two species by comparing the CDTs of C. jejuni and C. fetus. Furthermore, the inventors demonstrated that these primers were applicable to multiplex PCR that simultaneously allows for the rapid and convenient determination of the presence of Campylobacter CDT and identification of species, and that they can also be used in PCR-RFLP-based typing.
    Type: Application
    Filed: April 27, 2012
    Publication date: October 11, 2012
    Inventors: SHINJI YAMASAKI, MASAHIRO ASAKURA
  • Patent number: 8168408
    Abstract: The present inventors succeeded in cloning the CDT genes of C. coli and C. fetus, which were previously unknown, and in determining their sequences. In addition, the inventors also developed specific primers and primers common to the two species by comparing the CDTs of C. jejuni and C. fetus. Furthermore, the inventors demonstrated that these primers were applicable to multiplex PCR that simultaneously allows for the rapid and convenient determination of the presence of Campylobacter CDT and identification of species, and that they can also be used in PCR-RFLP-based typing.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: May 1, 2012
    Assignee: Fuso Pharmaceutical Industries, Ltd.
    Inventors: Shinji Yamasaki, Masahiro Asakura
  • Publication number: 20100273161
    Abstract: An objective of the present invention is to provide the cytolethal distending toxin (CDT) of C. hyointestinalis and polynucleotides encoding it, and novel methods for detection of C. hyointestinalis using the cdt genes. The present inventors focused on the cytolethal distending toxin (CDT) of Campylobacter bacteria, and detected the cdt genes of a Campylobacter-like bacterium isolated from an enteritis patient in Thailand. The present inventors discovered a bacterial strain whose cdtB gene was amplified by common primers in C. jejuni, C. coli, and C. fetus, but not by multiplex PCR that can specifically detect the cdtA, cdtB, and cdtC genes of the three bacterial species. The bacterial strain was identified as C. hyointestinalis by 16S rRNA gene analysis. Furthermore, the entire nucleotide sequence of the cdt genes was determined by genome walking upstream and downstream of the cdtB gene.
    Type: Application
    Filed: August 29, 2008
    Publication date: October 28, 2010
    Inventors: Shinji Yamasaki, Worada Samosorunsuk, Masahiro Asakura
  • Publication number: 20100248238
    Abstract: Multiplex PCR primers that can amplify the cdt genes of C. jejuni, C. coli, and C. fetus in a bacterial species-specific manner were prepared. Multiplex PCR with the primers was assessed using Campylobacter bacteria, other cdt gene-positive bacteria, and representative bacteria responsible for enteric infection. As a result, the present inventors' multiplex PCR using cdtB amplification primers was proven to enable simultaneous detection of different Campylobacter bacteria with high specificity. The methods of the present invention can identify Campylobacter at the bacterial species level in a single manipulation even when domestic animals or humans are infected with different bacterial species of Campylobacter.
    Type: Application
    Filed: February 23, 2010
    Publication date: September 30, 2010
    Inventors: SHINJI YAMASAKI, MASAHIRO ASAKURA