Patents by Inventor Yoshiki Sawa

Yoshiki Sawa 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: 20250123317
    Abstract: A test circuit for conducting a test on a switching device having a ground electrode, a control electrode, and a power-supply electrode. The test circuit includes: a first terminal configured to be connected to the ground electrode of the switching device; a second terminal configured to be connected to the control electrode of the switching device; a third terminal configured to be connected to the power-supply electrode of the switching device; a fourth terminal configured to receive a power supply voltage; and a first switch connected between the third terminal and the fourth terminal, and being configured to turn off in response to a predetermined time period having elapsed since turning off of the switching device. The predetermined time period is shorter than a time period from when the switching device is turned off to when a drive current flowing through the switching device reaches zero without being interrupted.
    Type: Application
    Filed: August 29, 2024
    Publication date: April 17, 2025
    Applicant: FUJI ELECTRIC CO., LTD.
    Inventors: Yuki SAWA, Yoshiki TAKESAKO, Toru AJIKI
  • Publication number: 20250093326
    Abstract: Method for evaluating cardiomyocytes using Raman scattering: a Raman spectrum of cardiomyocytes artificially induced to differentiate from pluripotent stem cells is acquired, an intensity of Raman-scattered light for a protein containing at least one of heme b and heme c as a prosthetic group is acquired from the Raman spectrum, and a state of progress of maturation of the cardiomyocytes is evaluated on the basis of the intensity of the Raman-scattered light. Method for evaluating differentiation into cardiomyocytes using Raman scattering: cells which are pluripotent stem cells are artificially induced to differentiate into cardiomyocytes, a Raman spectrum of the cells induced to differentiate is acquired, an intensity of Raman-scattered light for at least one of heme b and heme c is acquired from the Raman spectrum, and a state of progress of differentiation of the cells into cardiomyocytes is evaluated on the basis of the intensity of the Raman-scattered light.
    Type: Application
    Filed: January 12, 2023
    Publication date: March 20, 2025
    Applicants: OSAKA UNIVERSITY, National Institute of Advanced Industrial Science and Technology
    Inventors: Katsumasa Fujita, Kazuki Bando, Li Liu, Junjun Li, Yoshiki Sawa, Shigeru Miyagawa, Yasunori Nawa, Satoshi Fujita
  • Patent number: 12226436
    Abstract: It has been found that a cell cluster obtained by causing just isolated cells to adhere to each other secretes adiponectin after transplantation to the heart, and thereby has an excellent therapeutic effect on heart disease.
    Type: Grant
    Filed: January 18, 2017
    Date of Patent: February 18, 2025
    Assignee: ROHTO PHARMACEUTICAL CO., LTD.
    Inventors: Daisuke Kajita, Satsuki Fukushima, Shigeru Miyagawa, Yoshiki Sawa
  • Patent number: 12127553
    Abstract: A cell cryopreservation method including adding a 1 volume % of a composition comprising 0.01 wt % to 20 wt % of a sophorose lipid to cells in a cell culture medium just before or up to 6 hours before cryopreserving the cells; and cryopreserving the cell culture medium, wherein the composition improves cell viability after cryopreservation compared to cells that are cryopreserved with a similar composition that does not contain the sophorose lipid.
    Type: Grant
    Filed: May 19, 2022
    Date of Patent: October 29, 2024
    Assignees: SARAYA CO., LTD., OSAKA UNIVERSITY
    Inventors: Asuka Nogami, Motoki Tatsumi, Nanase Ishii, Mizuyuki Ryu, Yoshihiko Hirata, Yoshiki Sawa, Shigeru Miyagawa, Atsuhiro Saito, Hirotatsu Ohkawara
  • Publication number: 20240335480
    Abstract: An object of the present invention is to provide a pericyte-like cell having high angiogenic potential with a higher cell proliferation ability than a primary pericyte available in the past and high VEGF expression, and a method for producing the same. Provided are a method for producing a VEGF-highly expressing pericyte-like cell, the method including selecting a CD56(?) pericyte-like cell from a population including a pericyte-like cell obtained by inducing differentiation of a pluripotent stem cell; and a VEGF-highly expressing pericyte-like cell produced by the production method.
    Type: Application
    Filed: July 14, 2022
    Publication date: October 10, 2024
    Applicants: Astellas Pharma Inc., OSAKA UNIVERSITY, National Center for Child Health and Development
    Inventors: Kenichiro SHIMATANI, Hiromu SATO, Masao SASAI, Yoshiki SAWA, Atsuhiro SAITO, Shigeru MIYAGAWA
  • Publication number: 20240316115
    Abstract: An object of the present invention is to provide a pericyte-like cell having high angiogenic potential with a higher cell proliferation ability than a primary pericyte available in the past and high VEGF expression, and a method for producing the same. Provided are a method for producing a VEGF-highly expressing pericyte-like cell, the method including selecting a CD56(?) pericyte-like cell from a population including a pericyte-like cell obtained by inducing differentiation of a pluripotent stem cell; and a VEGF-highly expressing pericyte-like cell produced by the production method.
    Type: Application
    Filed: July 14, 2022
    Publication date: September 26, 2024
    Applicants: Astellas Pharma Inc., OSAKA UNIVERSITY
    Inventors: Kenichiro SHIMATANI, Hiromu SATO, Masao SASAI, Yoshiki SAWA, Atsuhiro SAITO, Shigeru MIYAGAWA
  • Patent number: 12084683
    Abstract: A method for producing a cell culture containing desired cells is provided. The desired cells are induced to be differentiated from pluripotent stem cells. The method includes seeding a cell population by dispersing embryoid bodies obtained by inducing differentiation from the pluripotent stem cells to the desired cells. The embryoid bodies are dispersed at a density reaching confluence or higher.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: September 10, 2024
    Assignees: TERUMO KABUSHIKI KAISHA, OSAKA UNIVERSITY
    Inventors: Fumiya Ohashi, Hiroko Iseoka, Yoshiki Sawa, Shigeru Miyagawa
  • Publication number: 20240277899
    Abstract: An object of the present invention is to provide a production method of a myocardial cell layer, and a myocardial cell layer, in which myocardial cells can be matured without using a complicated control device and can be maintained for a long period of time, and to provide a kit for evaluating a pharmaceutical candidate substance, a transplantation material, and an evaluation method of a pharmaceutical candidate substance. According to the present invention, there is provided a production method of a myocardial cell layer including the following steps (1) to (3).
    Type: Application
    Filed: April 26, 2024
    Publication date: August 22, 2024
    Applicants: FUJIFILM Corporation, OSAKA UNIVERSITY
    Inventors: Hayato MIYOSHI, Li LIU, Yoshiki SAWA, Junjun LI, Shigeru MIYAGAWA, Maki TAKEDA
  • Publication number: 20240197753
    Abstract: An object is to provide a pharmaceutical composition that improves cardiac function when administered during coronary artery bypass surgery for ischemic cardiomyopathy. A pharmaceutical composition for improving cardiac function comprising: (A) a release formulation comprising at least poly(lactic-co-glycolic acid) (PLGA) and a prostaglandin 12 receptor agonist, the PLGA having an average molecular weight of 10000 to 30000; and (B) a release formulation comprising at least poly(lactic-co-glycolic acid) (PLGA) and a prostaglandin 12 receptor agonist, the PLGA having an average molecular weight of 40000 to 60000.
    Type: Application
    Filed: March 25, 2022
    Publication date: June 20, 2024
    Applicants: OSAKA UNIVERSITY, CUORIPS INC.
    Inventors: Yoshiki SAWA, Shigeru MIYAGAWA, Yoshiki SAKAI, Yasuhiro YANAGI
  • Publication number: 20240182858
    Abstract: An object of the present invention is to provide a cell therapy that is expected to be useful as an angiogenic therapy for a peripheral vascular disease such as critical lower limb ischemia. Specifically, the object is to provide a pericyte having high angiogenic potential and a method for producing the same. A pericyte introduced a bFGF gene and a method for producing the same are provided.
    Type: Application
    Filed: March 16, 2022
    Publication date: June 6, 2024
    Applicants: Astellas Pharma Inc., Osaka University
    Inventors: Kenichiro SHIMATANI, Hiromu SATO, Masao SASAI, Yoshiki SAWA, Atsuhiro SAITO, Shigeru MIYAGAWA
  • Publication number: 20240157164
    Abstract: In order to provide a technical means that offers excellent convenience, usability, and safety for stellate ganglion block that can effectively suppress sympathetic overexcitation, this stellate ganglion magnetic stimulation device comprises: a head unit having a magnet for generating magnetism; and a neck unit that is removably worn around a wearer's neck and that presses the head unit against epidermis corresponding to the stellate ganglion so that stimulation by the magnetism acts on the stellate ganglion.
    Type: Application
    Filed: March 25, 2022
    Publication date: May 16, 2024
    Inventors: Masakazu YAGI, Yoshiki SAWA, Hirotada MASUDA, Kotaro YOSHIDA, Fumito MINAKAMI, Eri KANEDA
  • Patent number: 11969459
    Abstract: The present inventors have found that HMGB1 fragment peptides having a particular amino acid sequence exhibit the effects of improvement of cardiac function, inhibition of cardiomyocyte hypertrophy, inhibition of myocardial fibrosis, and promotion of angiogenesis in an animal model of dilated cardiomyopathy, that the particular HMGB1 fragment peptides also exhibit the effects of improvement of cardiac function, inhibition of cardiomegaly, inhibition of cardiomyocyte hypertrophy, inhibition of myocardial fibrosis, and promotion of angiogenesis in an animal model of ischemic cardiomyopathy caused by old myocardial infarction, and that the particular HMGB1 fragment peptides exhibit the effects of inhibition of cardiomyocyte hypertrophy and inhibition of myocardial fibrosis in an animal model of hypertensive cardiomyopathy.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: April 30, 2024
    Assignees: StemRIM Inc., OSAKA UNIVERSITY
    Inventors: Katsuto Tamai, Yoshiki Sawa, Shigeru Miyagawa, Takashi Kido, Takasumi Goto, Takehiko Yamazaki
  • Publication number: 20240122533
    Abstract: The present invention relates to an evaluation device 4 for evaluating the severity of pneumonia in a target patient, comprising: an acquisition unit 42 for acquiring a respiratory waveform of the target patient; a calculation unit 43 for calculating a value of an index indicating instability of a respiratory cycle or a respiratory frequency from the respiratory waveform; and an evaluation unit 44 for evaluating the severity based on the calculated value.
    Type: Application
    Filed: November 15, 2021
    Publication date: April 18, 2024
    Inventors: Shigeru MIYAGAWA, Yoshiki SAWA, Hidetsugu ASANOI, Sunao IKEGAWA
  • Publication number: 20240082154
    Abstract: The present invention provides clinically applicable, safe and convenient, pharmaceutical compositions and methods for disease site-specific treatment. The pharmaceutical composition for disease site-specific treatment methods comprises a stealth liposome having a prostaglandin I2 receptor agonist encapsulated therein.
    Type: Application
    Filed: October 23, 2023
    Publication date: March 14, 2024
    Inventors: Yoshiki Sawa, Shigeru Miyagawa, Yoshiki Sakai, Yasuhiro Yanagi
  • Publication number: 20230414192
    Abstract: A heart valve abnormality detection device includes a heart sound data acquisition portion 21 configured to acquire heart sound data corresponding to heart sounds, a first processing portion configured to set, based on the heart sound data, a section between a first heart sound and a second heart sound of the heart sounds as a target range and acquire a peak frequency that is a peak value of a frequency in a frequency component of the heart sounds within the target range, and a second processing portion configured to output a detection signal indicating that there is a high probability of severe aortic stenosis in a case where the peak frequency is a peak reference value or greater.
    Type: Application
    Filed: September 8, 2023
    Publication date: December 28, 2023
    Inventors: Hirotada MASUDA, Yoshiki SAWA, Toru KURATANI
  • Patent number: 11826401
    Abstract: The present inventors have found that HMGB1 fragment peptides having a particular amino acid sequence exhibit the effects of improvement of cardiac function, inhibition of cardiomyocyte hypertrophy, inhibition of myocardial fibrosis, and promotion of angiogenesis in an animal model of dilated cardiomyopathy, that the particular HMGB1 fragment peptides also exhibit the effects of improvement of cardiac function, inhibition of cardiomegaly, inhibition of cardiomyocyte hypertrophy, inhibition of myocardial fibrosis, and promotion of angiogenesis in an animal model of ischemic cardiomyopathy caused by old myocardial infarction, and that the particular HMGB1 fragment peptides exhibit the effects of inhibition of cardiomyocyte hypertrophy and inhibition of myocardial fibrosis in an animal model of hypertensive cardiomyopathy.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 28, 2023
    Assignees: STEMRIM INC., OSAKA UNIVERSITY
    Inventors: Katsuto Tamai, Yoshiki Sawa, Shigeru Miyagawa, Takashi Kido, Takasumi Goto, Takehiko Yamazaki
  • Publication number: 20230157634
    Abstract: This invention relates to a prediction support system and associated methods for supporting prediction of the severity of a disease. The systems and methods may perform operations that include continuously detecting whether a patient with the disease is in bed, and acquiring, based on the detection result of the detecting, an in-bed pattern indicating, as a time series, whether the patient is in bed. The systems may include a detection device and an acquisition unit.
    Type: Application
    Filed: April 22, 2021
    Publication date: May 25, 2023
    Inventors: Hidetsugu ASANOI, Yoshiki SAWA, Shigeru MIYAGAWA, Sunao IKEGAWA
  • Publication number: 20230032293
    Abstract: Methods are described for treating a heart disease, comprising suspending c) mesenchymal stem cells in either a) a fibrinogen solution or b) a thrombin solution, thereby obtaining a cell suspension, and directly spraying the cell suspension on a disease site substantially at the same time with the other of a) the fibrinogen solution or b) the thrombin solution that is not used in the suspending.
    Type: Application
    Filed: August 4, 2022
    Publication date: February 2, 2023
    Applicant: ROHTO PHARMACEUTICAL CO., LTD.
    Inventors: Yoshiki Sawa, Shigeru Miyagawa, Daisuke Kajita, Kotoe Tamada
  • Publication number: 20220372437
    Abstract: A method for producing a fibrin sheet containing at least one selected from the group consisting of cells and drugs in a fibrin gel, the method comprising: a step 1 of applying a fibrinogen solution containing at least one selected from the group consisting of cells and drugs and fibrinogen dropwise onto a surface of a substrate made of a gelatin hydrogel; a step 2 of adding thrombin to the fibrinogen solution on the surface of the substrate; a step 3 of placing a support film on and in contact with a top surface of the fibrinogen solution to which the thrombin has been added; a step 4 of forming a fibrin sheet containing the at least one selected from the group consisting of cells and drugs in a fibrin gel between the substrate and the support film by a reaction between the fibrinogen and the thrombin; and a step 5 of melting the substrate at a temperature not lower than a melting temperature of the gelatin hydrogel to separate, from the substrate, the fibrin sheet supported by the support film.
    Type: Application
    Filed: September 9, 2020
    Publication date: November 24, 2022
    Applicant: OSAKA UNIVERSITY
    Inventors: Takaaki SAMURA, Shigeru MIYAGAWA, Yoshiki SAWA, Junya YOKOYAMA
  • Publication number: 20220323726
    Abstract: To provide a catheter for aortic valvuloplasty in which it is possible to significantly increase the therapeutic effect despite being minimally invasive. The present invention provides a catheter for aortic valvuloplasty characterized by including: first to third balloons that can expand and contract due to supply of a fluid, it being possible to change the relative positional relationships of the first to third balloons; first to third shafts that connect to the first to third balloons at the tip and supply fluid to the first to third balloons to cause the first to third balloons to expand and contract independently of each other; and at least one wire that introduces the first to third balloons from outside the patient's body to the aortic valve.
    Type: Application
    Filed: September 8, 2020
    Publication date: October 13, 2022
    Applicant: OSAKA UNIVERSITY
    Inventors: Yoshiki Sawa, Masakazu Yagi, Yusuke Misumi