Patents by Inventor Hideki Ishihara

Hideki Ishihara 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: 12153054
    Abstract: Provided are a pretreatment method for detecting the number of cells containing Ki-67 protein-positive nuclei using Ki-67 antibody; a method for the detection; a kit to be used in the detection method; and determination of a therapy regimen using the aforesaid method. Attempts were made to activate Ki-67 antigen with the use of an enzyme having been considered as inappropriate for the activation thereof. By pretreating a sample with an enzyme not recognizing the epitope of MIB-1 (a rare cutter enzyme), the antigen activation of Ki-67 antigen was enhanced, while enhancing the antigenicity of other antigens including a cytokeratin too. As a result, a method for more objectively and more universally quantifying Ki-67-positive cells at higher reproducibility, said method comprising isolating cell nuclei from an FFPE section while enhancing the antigenicity and performing a reaction between Ki-67 protein, i.e., the target, existing in the cell nuclei with a fluorescently labeled antibody, has been completed.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: November 26, 2024
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Natsuki Sato, Mika Kuroiwa, Masatoshi Nakatsuji, Hideki Ishihara
  • Patent number: 12111788
    Abstract: A central processing unit which achieves increased processing speed is provided. In a CPU constituted of a RISC architecture, a program counter which indicates an address in an instruction memory and a general-purpose register which is designated as an operand in an instruction to be decoded by an instruction decoder are constituted of asynchronous storage elements.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: October 8, 2024
    Assignee: UNO Laboratories, Ltd.
    Inventors: Hideki Ishihara, Masami Fukushima, Koichi Kitagishi, Seijin Nakayama
  • Publication number: 20220197853
    Abstract: A central processing unit which achieves increased processing speed is provided. In a CPU constituted of a RISC architecture, a program counter which indicates an address in an instruction memory and a general-purpose register which is designated as an operand in an instruction to be decoded by an instruction decoder are constituted of asynchronous storage elements.
    Type: Application
    Filed: February 6, 2020
    Publication date: June 23, 2022
    Inventors: Hideki Ishihara, Masami Fukushima, Koichi Kitagishi, Seijin Nakayama
  • Patent number: 10995359
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: May 4, 2021
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Masayuki Wakabayashi, Natsuki Sato, Hideki Ishihara
  • Publication number: 20200408770
    Abstract: Provided are a pretreatment method for detecting the number of cells containing Ki-67 protein-positive nuclei using Ki-67 antibody; a method for the detection; a kit to be used in the detection method; and determination of a therapy regimen using the aforesaid method. Attempts were made to activate Ki-67 antigen with the use of an enzyme having been considered as inappropriate for the activation thereof. By pretreating a sample with an enzyme not recognizing the epitope of MIB-1 (a rare cutter enzyme), the antigen activation of Ki-67 antigen was enhanced, while enhancing the antigenicity of other antigens including a cytokeratin too. As a result, a method for more objectively and more universally quantifying Ki-67-positive cells at higher reproducibility, said method comprising isolating cell nuclei from an FFPE section while enhancing the antigenicity and performing a reaction between Ki-67 protein, i.e., the target, existing in the cell nuclei with a fluorescently labeled antibody, has been completed.
    Type: Application
    Filed: February 28, 2019
    Publication date: December 31, 2020
    Applicant: NITTO BOSEKI CO., LTD.
    Inventors: Natsuki SATO, Mika KUROIWA, Masatoshi NAKATSUJI, Hideki ISHIHARA
  • Publication number: 20200308623
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Application
    Filed: June 17, 2020
    Publication date: October 1, 2020
    Inventors: Masayuki WAKABAYASHI, Natsuki SATO, Hideki ISHIHARA
  • Patent number: 10724071
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: July 28, 2020
    Assignee: NITTO BOSEKI CO., LTD.
    Inventors: Masayuki Wakabayashi, Natsuki Sato, Hideki Ishihara
  • Publication number: 20180291421
    Abstract: The present invention addresses the problem of providing a novel method for classifying cancer cells by an analysis method in which measurement of the activity of two types of protein kinase is used. Cancer cells are newly classified and drug sensitivity is predicted on the basis of the ratio of the activity of two types of protein kinase derived from the same sample.
    Type: Application
    Filed: October 14, 2016
    Publication date: October 11, 2018
    Inventors: Masayuki WAKABAYASHI, Natsuki SATO, Hideki ISHIHARA
  • Patent number: 9146239
    Abstract: There is provided a method of judging a risk of cancer recurrence based on the activity value and expression level of the first CDK, the activity value and expression level of the second CDK, and the expression levels of uPA and PAI-1 and a computer program.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: September 29, 2015
    Assignee: SYSMEX CORPORATION
    Inventors: Hideki Ishihara, Tomoko Matsushima, Satoshi Nakayama, Manfred Schmitt, Marion Kiechle, Rupert Langer, Ulrike Schwarz-Boeger
  • Patent number: 8921057
    Abstract: A CDK profile including a ratio of specific activities of two cyclin dependent kinases closely correlates with the malignancy grade and the presence/absence of the sensitivity to an irritant such as an anticancer agent of a cancer tissue in clinical medicine. Therefore, the properties of a mammalian cell, such as malignancy grade, proliferation potency, sensitivity to an irritant such as an anticancer agent can be assessed based on its CDK profile or by comparing the result of a specific activity ratio of two CDKs with a predetermined threshold corresponding to the ratio. This sensitivity assessing method shows a high ratio of correct assessing results particularly in positive or sensitivity and is useful in predicting efficacy of chemotherapy using the anticancer agent.
    Type: Grant
    Filed: May 30, 2005
    Date of Patent: December 30, 2014
    Assignee: Sysmex Corporation
    Inventors: Hideki Ishihara, Tomoko Matsushima, Yuko Kawasaki
  • Patent number: 8921114
    Abstract: A diagnosis support system for cancer is disclosed that comprises: a measurement value acquiring section for acquiring a measurement value of a first cancer patient; a sample data memory for storing sample data of a plurality of cancer patients different from the first patient; a reference range determination section for determining a reference range based on the measurement value of the first cancer patient; a display unit; and a display controller for controlling the display unit to display a diagnosis support screen showing the clinical information included in the sample data having measurement value within the reference range. A method of providing cancer diagnosis support information and a computer program product are also disclosed.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: December 30, 2014
    Assignee: Sysmex Corporation
    Inventors: Hideki Ishihara, Tomoko Matsushima, Masaki Shibayama
  • Patent number: 8583588
    Abstract: A method for judging a risk of cancer recurrence comprising: acquiring an activity value and expression level of a first cyclin dependent kinase (CDK) of a cell contained in tissues extracted from cancer patients, an activity value and expression level of a second CDK, and a number of Ki67-expressing cells or an expression level of Ki67; and judging a risk of cancer recurrence based on the acquired activity value and expression level of the first CDK, the activity value and expression level of the second CDK, and a percentage of Ki67-expressing cells or the expression level of Ki67. A computer program product and a computer system are also disclosed.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: November 12, 2013
    Assignee: Sysmex Corporation
    Inventors: Masaki Shibayama, Hideki Ishihara, Keigo Gohda, Satoshi Nakayama, Tadashi Kiniwa
  • Patent number: 8465919
    Abstract: The method for detecting a methylated cytosine of the present invention comprises the steps of: hybridizing a sample DNA with an oligonucleotide which can hybridize with a region of the sample DNA containing a cytosine suspected of being methylated and has an a basic site at the position complementary to the cytosine; reacting the hybridized sample DNA obtained in the previous step with an oxidizing agent to oxidize the cytosine when it is methylated; and detecting the oxidized methylated cytosine.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: June 18, 2013
    Assignee: Sysmex Corporation
    Inventors: Masahiro Kajita, Noriko Oka, Noriaki Yamamoto, Ayako Sakai, Hideki Ishihara
  • Publication number: 20130143236
    Abstract: The present invention provides a method for determining sensitivity of tumor cells to dasatinib by evaluating inhibitory capacity of a predetermined tyrosine kinase inhibitor in a measurement sample which is prepared from a biological sample containing tumor cells and a computer program.
    Type: Application
    Filed: November 29, 2012
    Publication date: June 6, 2013
    Inventors: Masaaki KAWAI, Yasuhiro TORIKOSHI, Keigo GOHDA, Hideki ISHIHARA
  • Patent number: 8257916
    Abstract: A method for detecting integrated HPV DNA is described herein. This method comprises obtaining first and second samples, obtaining first and second information, and detecting, based on the first and second information, the HPV DNA integrated into the genome of a cell derived from a subject. The second sample comprises DNA derived from the cell, which is treated with an enzyme having exonuclease activity. The first information is related to the amount of HPV DNA in the first sample, and the second information is related to the amount of HPV DNA in the second sample.
    Type: Grant
    Filed: October 31, 2008
    Date of Patent: September 4, 2012
    Assignee: Sysmex Corporation
    Inventors: Noriko Oka, Masahiro Kajita, Hideki Ishihara
  • Patent number: 8163490
    Abstract: The present invention provides a method of analyzing methylated DNA, comprising steps of: (A) treating a DNA-containing sample with a restriction enzyme to obtain a sample containing a DNA fragment; (B) concentrating methylated DNA contained in the sample obtained in step (A) to obtain a methylated DNA concentrate; (C) subjecting the methylated DNA concentrate obtained in step (B) and a primer set to nucleic acid amplification reaction, wherein the primer set performs the nucleic acid amplification reaction in step (C) by using a template DNA which does not have a CpG site; (D) detecting an amplification product obtained in step (C); (E) judging whether the methylated DNA concentrate obtained in step (B) is appropriate as a sample for detection of methylated DNA, on the basis of the detection result of the amplification product in step (D); and (F) analyzing the methylated DNA contained in the methylated DNA concentrate.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: April 24, 2012
    Assignee: Sysmex Corporation
    Inventors: Ayako Sakai, Masahiro Kajita, Hideki Ishihara
  • Patent number: 8160821
    Abstract: A method of supporting a diagnosis of an effect of a treatment by using anthracycline anticancer drugs is disclosed. The method provides a new value for judging an effect, a judgment score, which is calculated based on expression levels and activity values of two cyclin dependent kinases (CDKs). The effect of the treatment by using anthracycline anticancer drugs is judged by comparing the judgment score with a predetermined threshold level.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: April 17, 2012
    Assignee: Sysmex Corporation
    Inventors: Masaki Shibayama, Hideki Ishihara, Tomoko Matsushima, Shigehiro Numada
  • Patent number: 8131520
    Abstract: A device for supporting a diagnosis of a cancer which provides information useful to decide whether or not an anthracycline anticancer drug should be administered to a cancer patient to be examined is disclosed. Concretely, the device is composed to be able to acquire an activity and an expression of two cyclin dependent kinases (CDK) from a malignant tumor of a cancer patient to be examined, and to acquire a CDK parameters from both of two CDKs. Furthermore the device determines sample data comprising predetermined CDK parameter, and display information of determined sample data. According to the above component, user is easily able to know whether or not a cancer of a cancer patient, whose tumor is similar to the tumor of the cancer patient to be examined, has been recurred in spite of an administration of an anthracycline anticancer drug.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: March 6, 2012
    Assignee: Sysmex Corporation
    Inventors: Hideki Ishihara, Tomoko Matsushima
  • Patent number: 8039725
    Abstract: An electronic keyboard instrument that emits sounds in both upward and downward directions from speakers solely for upward sound emission and from speakers solely for downward sound emission to realize acoustics similar to that of acoustic piano, and constitutes rear parts of resonance chambers in a speaker box by a common partition plate to prevent the speaker box from becoming complicated in construction. Woofers directed downward are disposed at a lower part of the speaker box, and squawker directed upward are disposed at an upper part of the speaker box. The internal space of the speaker box is partitioned by one horizontal partition plate into an upper space where resonance chambers for the squawkers are defined by vertical partition plates and a lower space where resonance chambers for the woofers are defined by vertical partition plates. Rear parts of the resonance chambers are constituted by the horizontal partition plate.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: October 18, 2011
    Assignee: Yamaha Corporation
    Inventors: Takashi Kato, Takashi Fujita, Hideki Ishihara, Akiko Shinjo, Akito Oba
  • Patent number: 8041514
    Abstract: A method for judging feature of malignant tumor is described. The method comprises obtaining step, first comparing step, second comparing step and judging step. The obtaining step comprises obtaining a first parameter based on activity and expression level of a first cyclin dependent kinase (first CDK) contained in a tumor cell of the malignant tumor, a second parameter based on activity and expression level of a second cyclin dependent kinase (second CDK) contained in the tumor cell, a third parameter based on the first parameter and the second parameter, and a fourth parameter based on expression level of a cyclin contained in the tumor cell. The first comparing step comprises comparing a first threshold value with the third parameter. The second comparing comprises comparing a second threshold value with the fourth parameter. The judging step comprises judging the feature of the malignant tumor based on the comparison results of the first comparing step and the second comparing step.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: October 18, 2011
    Assignee: Sysmex Corporation
    Inventors: Satoshi Tanaka, Masaki Shibayama, Hideki Ishihara, Tomoko Matsushima, Aya Katayama, Yuko Kawasaki