Patents by Inventor Katsumi Aoyagi

Katsumi Aoyagi 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: 20200371104
    Abstract: Disclosed is a highly sensitive assay method and assay kit for HBsAg, which do not require treatment with a strong acid or alkali in the sample pretreatment, and which is less susceptible to influences by the autoantibodies. The assay method for hepatitis B virus s antigen in a sample separated from a living body includes: a pretreatment step of mixing a sample with a pretreatment reagent containing a reducing agent, to reduce hepatitis B virus s antigen; and an immunoassay step of subjecting the pretreated sample to an immunoassay of hepatitis B virus s antigen using at least one antibody or antigen-binding fragment thereof capable of antigen-antibody reaction with a reduced peptide composed of the amino acids at positions 98 to 179 of hepatitis B virus s antigen.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 26, 2020
    Applicant: FUJIREBIO INC.
    Inventors: Chiharu OHUE, Kumiko IIDA, Katsumi AOYAGI, Shintaro YAGI
  • Patent number: 10830771
    Abstract: Disclosed is a means of enabling the construction of a more accurate PIVKA-II immunoassay system using monoclonal antibodies against human prothrombin. The PIVKA-II assay method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using an anti-PIVKA-II antibody or an antigen-binding fragment thereof which specifically binds to PIVKA-II and a mixture of a first anti-prothrombin antibody or an antigen-binding fragment thereof which recognizes hydrophilic PIVKA-II molecules and a second anti-prothrombin antibody or an antigen-binding fragment thereof which recognizes hydrophobic PIVKA-II molecules.
    Type: Grant
    Filed: October 6, 2016
    Date of Patent: November 10, 2020
    Assignees: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Yoshiyuki Kitamura, Katsumi Aoyagi
  • Patent number: 10634676
    Abstract: Disclosed is a novel means of simultaneously detecting a human parvovirus B19 antigen and an IgM type anti-human parvovirus B19 antibody. The method of simultaneously detecting a human parvovirus B19 antigen and an IgM type anti-human parvovirus B19 antibody in a sample according to the present invention comprises bringing a sample into contact with (1) a 1st probe for detecting the parvovirus B19 antigen and (2) a 2nd probe for detecting the IgM type anti-parvovirus B19 antibody in the presence of a surfactant within the same reaction.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: April 28, 2020
    Assignee: FUJIREBIO INC.
    Inventors: Ran Gu, Atsushi Kaneko, Katsumi Aoyagi
  • Publication number: 20200088722
    Abstract: Disclosed are a PIVKA-II measurement method that achieves better serum-plasma correlation than conventional methods, and a reagent and a kit therefor. The PIVKA-II measurement method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using a mixture of an anti-F1 antibody that specifically binds to prothrombin fragment F1 or an antigen-binding fragment thereof and an anti-F2 antibody that specifically binds to prothrombin fragment F2 or an antigen-binding fragment thereof; and an anti-PIVKA-II antibody that specifically binds to PIVKA-II or an antigen-binding fragment thereof.
    Type: Application
    Filed: November 26, 2019
    Publication date: March 19, 2020
    Applicants: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Kentaro YAMAGUCHI, Katsumi AOYAGI, Azusa TERAO
  • Patent number: 10539559
    Abstract: Disclosed are a PIVKA-II measurement method that achieves better serum-plasma correlation than conventional methods, and a reagent and a kit therefor. The PIVKA-II measurement method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using a mixture of an anti-F1 antibody that specifically binds to prothrombin fragment F1 or an antigen-binding fragment thereof and an anti-F2 antibody that specifically binds to prothrombin fragment F2 or an antigen-binding fragment thereof; and an anti-PIVKA-II antibody that specifically binds to PIVKA-II or an antigen-binding fragment thereof.
    Type: Grant
    Filed: August 6, 2013
    Date of Patent: January 21, 2020
    Assignees: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Kentaro Yamaguchi, Katsumi Aoyagi, Azusa Terao
  • Publication number: 20180364231
    Abstract: Disclosed is a novel means of simultaneously detecting a human parvovirus B19 antigen and an IgM type anti-human parvovirus B19 antibody. The method of simultaneously detecting a human parvovirus B19 antigen and an IgM type anti-human parvovirus B19 antibody in a sample according to the present invention comprises bringing a sample into contact with (1) a 1st probe for detecting the parvovirus B19 antigen and (2) a 2nd probe for detecting the IgM type anti-parvovirus B19 antibody in the presence of a surfactant within the same reaction.
    Type: Application
    Filed: October 14, 2016
    Publication date: December 20, 2018
    Applicant: FUJIREBIO INC.
    Inventors: Ran GU, Atsushi KANEKO, Katsumi AOYAGI
  • Publication number: 20180284119
    Abstract: Disclosed is a means of enabling the construction of a more accurate PIVKA-II immunoassay system using monoclonal antibodies against human prothrombin. The PIVKA-II assay method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using an anti-PIVKA-II antibody or an antigen-binding fragment thereof which specifically binds to PIVKA-II and a mixture of a first anti-prothrombin antibody or an antigen-binding fragment thereof which recognizes hydrophilic PIVKA-II molecules and a second anti-prothrombin antibody or an antigen-binding fragment thereof which recognizes hydrophobic PIVKA-II molecules.
    Type: Application
    Filed: October 6, 2016
    Publication date: October 4, 2018
    Applicants: FUJIREBIO INC., SEKISUI MEDICAL CO., LTD.
    Inventors: Yoshiyuki KITAMURA, Katsumi AOYAGI
  • Patent number: 9298444
    Abstract: A software updating method for updating software stored as compressed code in a nonvolatile memory provided in a portable terminal on the basis of differential data via wireless communication includes the steps of providing a file system area having a fault-tolerant property; decompressing, at the execution of software updating, the compressed code of the software and loading the decompressed code into a random-access memory; updating the software in the random-access memory on the basis of the differential data; compressing the updated software; and storing a backup of a compressed updated code sequence corresponding to a compressed updated portion of the compressed updated software in the file system area and then writing the compressed updated code sequence corresponding to the compressed updated portion of the compressed updated software back to the nonvolatile memory.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: March 29, 2016
    Assignees: SONY CORPORATION, SONY MOBILE COMMUNICATIONS INC.
    Inventors: Yasuyuki Hirao, Katsumi Aoyagi, Toshihisa Sanbommatsu, Tomohiro Ichikawa, Kenji Asa
  • Publication number: 20150219638
    Abstract: Disclosed are a PIVKA-II measurement method that achieves better serum-plasma correlation than conventional methods, and a reagent and a kit therefor. The PIVKA-II measurement method according to the present invention comprises measuring PIVKA-II in a sample by an immunoassay using a mixture of an anti-F1 antibody that specifically binds to prothrombin fragment F1 or an antigen-binding fragment thereof and an anti-F2 antibody that specifically binds to prothrombin fragment F2 or an antigen-binding fragment thereof; and an anti-PIVKA-II antibody that specifically binds to PIVKA-II or an antigen-binding fragment thereof.
    Type: Application
    Filed: August 6, 2013
    Publication date: August 6, 2015
    Applicants: EIDIA CO., LTD., FUJIREBIO INC.
    Inventors: Kentaro Yamaguchi, Katsumi Aoyagi, Azusa Terao
  • Patent number: 8826263
    Abstract: A portable terminal includes: a storage unit for storing at least a first program and software converting data to convert the first program into a second program; a storage control unit to perform reading and writing of the program and data as to the storage unit; a software converting processing unit to execute processing that converts the first program into the second program, using the first program and software converting data read by the storage control unit from the storage unit; and a terminal starting control unit to execute at the time of terminal startup one or the other of starting up the first program, and starting up the converting processing from the first program to the second program by the program converting processing unit and the second program that has been converted.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: September 2, 2014
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Tomohiro Ichikawa, Yasuyuki Hirao, Katsumi Aoyagi, Kenji Asa
  • Patent number: 8819662
    Abstract: A terminal device may include: a communication interface to receive, from a server via a network, a file for updating software in a memory device coupled with the terminal device, and a software update table that includes data regarding one or more performance values and one or more time values indicative of one or more lengths of time taken to update the software using the file; a processor to obtain data regarding a performance value of the memory device, select, from the software update table, one of the one or more performance values based on the performance value of the memory device, and obtain, from the software update table, a time value associated with the selected performance value; and an output device to provide an output corresponding to the obtained time value. Each performance value is associated with one of the one or more time values, respectively.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: August 26, 2014
    Assignees: Sony Corporation, Sony Mobile Communications Inc.
    Inventors: Katsumi Aoyagi, Miki Suzuki, Yasuyuki Hirao, Hidefumi Kaneko, Takeshi Kanemoto, Tomohiro Ichikawa
  • Patent number: 8706954
    Abstract: A terminal apparatus including a non-volatile memory for which writing is performed in units of blocks; and a control unit configured to perform a first method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to an information management table in a file system of the non-volatile memory, and to perform a second method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to user data in the file system.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: April 22, 2014
    Assignees: Sony Corporation, Sony Mobile Communications AB
    Inventors: Katsumi Aoyagi, Rutger Ljungqvist, Hans Wachtmeister, Haekan Palm, Kenji Takao, Masaya Takahashi, Yoshiyuki Hama, Yimin Li, Toshihisa Sanbommatsu, Tomohiro Ichikawa
  • Patent number: 8609424
    Abstract: Disclosed is a novel high-sensitive ProGRP measurement method, which is free from problems such as the fluctuations in measurement values and the operational constraints (e.g., the constraints on the handling of a sample). Specifically disclosed is a method for the measurement of a gastrin-releasing peptide precursor and/or a digested product thereof using at least two different antibodies each of which can recognize an epitope represented by the amino acid sequence consisting of amino acid 47 to amino acid 68 of the amino acid sequence set forth in SEQ ID NO:1. The method can detect a ProGRP or a digested product thereof in a refrigerated sample within a shorter period, by using the sample in a smaller amount, and with a higher degree of detective sensitivity, compared with the conventional methods.
    Type: Grant
    Filed: September 29, 2008
    Date of Patent: December 17, 2013
    Assignee: Advanced Life Science Institute, Inc.
    Inventors: Katsumi Aoyagi, Yukiji Izawa
  • Publication number: 20130332918
    Abstract: A terminal device may include: a communication interface to receive, from a server via a network, a file for updating software in a memory device coupled with the terminal device, and a software update table that includes data regarding one or more performance values and one or more time values indicative of one or more lengths of time taken to update the software using the file; a processor to obtain data regarding a performance value of the memory device, select, from the software update table, one of the one or more performance values based on the performance value of the memory device, and obtain, from the software update table, a time value associated with the selected performance value; and an output device to provide an output corresponding to the obtained time value. Each performance value is associated with one of the one or more time values, respectively.
    Type: Application
    Filed: June 11, 2012
    Publication date: December 12, 2013
    Applicant: SONY MOBILE COMMUNICATIONS JAPAN, INC.
    Inventors: Katsumi Aoyagi, Miki Suzuki, Yasuyuki Hirao, Hidefumi Kaneko, Takeshi Kanemoto, Tomohiro Ichikawa
  • Patent number: 8546075
    Abstract: A method of treating samples containing hepatitis C virus (HCV) which method comprises treating HCV-containing samples with a treating agent containing (1) an acidifying agent, and (2) a protein-denaturing agent, or an amphoteric surfactant or a cationic surfactant having both a straight chain alkyl group of 10 or more carbon atoms and a tertiary amine or a quaternary ammonium salt in the same molecule, to effect the release of the HCV antigen and the inactivation of antibodies that bind to the HCV antigen, and the like.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: October 1, 2013
    Assignee: Advanced Life Science Institute, Inc.
    Inventors: Katsumi Aoyagi, Kumiko Iida, Naoko Matsubara
  • Publication number: 20120059979
    Abstract: A terminal apparatus including a non-volatile memory for which writing is performed in units of blocks; and a control unit configured to perform a first method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to an information management table in a file system of the non-volatile memory, and to perform a second method of managing bad blocks in the non-volatile memory with respect to blocks corresponding to user data in the file system.
    Type: Application
    Filed: May 11, 2011
    Publication date: March 8, 2012
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Katsumi AOYAGI, Rutger Ljungqvist, Hans Wachtmeister, Haekan Palm, Kenji Takao, Masaya Takahashi, Yoshiyuki Hama, Yimin Li, Toshihisa Sanbommatsu, Tomohiro Ichikawa
  • Publication number: 20110262892
    Abstract: A method for treating a virus-containing sample, characterized by treatment of a virus-containing sample with a treatment solution containing (1) an anionic surfactant and (2) an amphoteric surfactant, nonionic surfactant or protein denaturant; a virus assay method using said treating method; a method for treating a virus-containing sample, characterized by treatment of a virus-containing sample with a treatment solution containing (1) a chaotropic ion and (2) an acidifying agent; a virus assay method using said treating method; a virus assay method, characterized in that a virus antigen and a virus antibody are measured based on their binding to their probe in the presence of a surfactant with an alkyl group of 10 or more carbon atoms and a secondary, tertiary or quaternary amine, or a nonionic surfactant, or of both of them; and a monoclonal antibody and a hybridoma producing the same for carrying out said method.
    Type: Application
    Filed: January 7, 2009
    Publication date: October 27, 2011
    Inventors: Katsumi Aoyagi, Chiharu Ohue, Kumiko Iida, Tatsuji Kimura, Shintaro Yagi
  • Patent number: 7927814
    Abstract: Disclosed is a novel method for determination of ProGRP which is free from problems such as the dispersion in the values of measurements and operational constraints such as handling of a test sample. A method for the determination of a gastrin-releasing peptide precursor or a digest thereof using at least two different antibodies each of which can recognize a peptide comprising the partial amino acid sequence starting from amino acid residue 40 and ended at amino acid residue 75 in the amino acid sequence depicted in SEQ ID NO:1; and a method for the determination of a gastrin-releasing peptide precursor and/or a digest thereof using at least two different antibodies each of which can recognize a peptide comprising the partial amino acid sequence starting from amino acid residue 40 and ended at amino acid residue 79 in the amino acid sequence depicted in SEQ ID NO:1.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: April 19, 2011
    Assignee: Advanced Life Science Institute, Inc.
    Inventor: Katsumi Aoyagi
  • Publication number: 20100248274
    Abstract: Disclosed is a novel high-sensitive ProGRP measurement method, which is free from problems such as the fluctuations in measurement values and the operational constraints (e.g., the constraints on the handling of a sample). Specifically disclosed is a method for the measurement of a gastrin-releasing peptide precursor and/or a digested product thereof using at least two different antibodies each of which can recognize an epitope represented by the amino acid sequence consisting of amino acid 47 to amino acid 68 of the amino acid sequence set forth in SEQ ID NO:1. The method can detect a ProGRP or a digested product thereof in a refrigerated sample within a shorter period, by using the sample in a smaller amount, and with a higher degree of detective sensitivity, compared with the conventional methods.
    Type: Application
    Filed: September 29, 2008
    Publication date: September 30, 2010
    Applicant: Advanced Life Science Institute Inc.
    Inventors: Katsumi Aoyagi, Yukiji Izawa
  • Patent number: 7797573
    Abstract: A memory management method for managing a non-volatile memory into which writing is performed in units of blocks includes the steps of assigning a plurality of blocks of the non-volatile memory to a management area formed of at least one block for storing management information, to a code area formed of a plurality of blocks into which program code is written, to a substitution area formed of a plurality of blocks for substituting for a defective block, and to an interference area formed of at least one block; storing at least correspondence information between the blocks of the substitution area and a defective block of a substitution target as management information within the management area; and using the block of the substitution area in place of the defective block on the basis of the correspondence information when the defective block is to be used.
    Type: Grant
    Filed: July 31, 2007
    Date of Patent: September 14, 2010
    Assignee: Sony Ericsson Mobile Communications Japan, Inc.
    Inventors: Katsumi Aoyagi, Tomohiro Ichikawa, Yoshinori Motoyama, Satoshi Hirano, Toshihisa Sanbommatsu, Toru Hayami, Tadashi Kamohara, Kazutoshi Nagatani