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: 20170035939
    Abstract: The present invention aims to provide an artificial tissue that can efficiently reproduce myocardial tissue function and that can be used in an actual implantation and produced by culturing. The present invention relates to a graft material for treating myocardial disease, the graft material including a cell sheet containing adipocytes.
    Type: Application
    Filed: October 12, 2016
    Publication date: February 9, 2017
    Applicants: CELLSEED INC., OSAKA UNIVERSITY
    Inventors: Yukiko IMANISHI, Yoshiki SAWA, Iichiro SHIMOMURA, Norikazu MAEDA, Shigeru MIYAGAWA, Hideaki SAKAI
  • Publication number: 20160312188
    Abstract: A method of obtaining pancreatic endocrine cells from cells originating in an adipose tissue characterized by comprising culturing the adipose tissue-origin cells; the pancreatic endocrine cells that can be obtained thereby; a method of treating or preventing a disease caused by the hypofunction in pancreatic endocrine cells wherein the above-described pancreatic endocrine cells are used; a method of screening a substance capable of promoting or inhibiting the differentiation into pancreatic endocrine cells characterized by comprising adding a candidate substance to a medium in the course of culturing adipose tissue-origin cells to obtain the pancreatic endocrine cells; and so on.
    Type: Application
    Filed: January 8, 2016
    Publication date: October 27, 2016
    Inventors: Akifumi Matsuyama, Hiroshi Komoda, Yoshiki Sawa, Yuzuru Kanakura
  • Publication number: 20160256852
    Abstract: An oxygen-absorbing resin composition including a base resin (A) which is a thermoplastic resin, an oxygen-absorbing component (B) which is a compound having an unsaturated alicyclic structure, and an oxidation promotion component (C) for promoting the oxidation of the oxygen-absorbing component (B); wherein the oxygen-absorbing component (B) is an imide compound having a molecular weight of not more than 2,000 and obtained by heat-treating an amide having been obtained by reacting an acid anhydride represented by the following formula (1): wherein the ring X is an alicyclic ring having an unsaturated bond, and Y is an alkyl group, with an aromatic amine, and wherein the oxidation promotion component (C) is a compound having a benzyl hydrogen.
    Type: Application
    Filed: May 17, 2016
    Publication date: September 8, 2016
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Toshiki YAMADA, Yukiko HIRAYAMA, Yoshiki SAWA
  • Publication number: 20160250395
    Abstract: The present invention provides a drug-eluting stent graft for preventing stent graft-related complications as well as treating aneurysm. Specifically, the present invention relates to a drug-eluting stent graft comprising a drug, a drug-retaining agent and a stent graft, and a method for therapy of aneurysm including the use of the drug-eluting stent graft.
    Type: Application
    Filed: September 10, 2014
    Publication date: September 1, 2016
    Inventors: Yoshiki Sawa, Toru Kuratani, Koichi Toda, Takayoshi Ueno, Shigeru Miyagawa, Satsuki Fukushima, Atsuhiro Saito, Yoshiki Watanabe, Yoshiki Sakai
  • Patent number: 9428733
    Abstract: A method of obtaining pancreatic endocrine cells from cells originating in an adipose tissue characterized by comprising culturing the adipose tissue-origin cells; the pancreatic endocrine cells that can be obtained thereby; a method of treating or preventing a disease caused by the hypofunction in pancreatic endocrine cells wherein the above-described pancreatic endocrine cells are used; a method of screening a substance capable of promoting or inhibiting the differentiation into pancreatic endocrine cells characterized by comprising adding a candidate substance to a medium in the course of culturing adipose tissue-origin cells to obtain the pancreatic endocrine cells; and so on.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 30, 2016
    Assignee: AKIFUMI MATSUYAMA
    Inventors: Akifumi Matsuyama, Hiroshi Komoda, Yoshiki Sawa, Yuzuru Kanakura
  • Publication number: 20160058908
    Abstract: A laminate of a sheet-shaped cell culture is disclosed, which has excellent operability and is suitable for implantation. A method is disclosed for producing a laminate of a fibrin gel and a sheet-shaped cell culture, including a step of dripping a liquid containing fibrinogen onto an upper surface of a sheet-shaped cell culture, a step of spraying a liquid containing thrombin onto the surface, and a step of forming a fibrin gel layer on the surface by a reaction between fibrinogen and thrombin; and a laminate of a fibrin gel and a sheet-shaped cell culture produced by the method are disclosed.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 3, 2016
    Applicants: OSAKA UNIVERSITY, TERUMO KABUSHIKI KAISHA
    Inventors: Fumiya OOHASHI, Ryouhei TAKEUCHI, Tadashi SAMESHIMA, Shigeru MIYAGAWA, Yoshiki SAWA, Mitsuhiro SAITO
  • Publication number: 20150272874
    Abstract: An object of the present invention is to provide a lung-specific therapeutic agent that can be intravenously administered. The present invention provides a lung-specific therapeutic agent characterized by containing sustained-release microspheres that contain a pharmaceutical compound and being intravenously administered.
    Type: Application
    Filed: October 28, 2013
    Publication date: October 1, 2015
    Inventors: Yoshiki Sawa, Shigeru Miyagawa, Masaki Taira, Yoshiki Sakai
  • Publication number: 20150273017
    Abstract: A fragment peptide having a proper length composed of a part of an HMGB1 protein was synthesized and the peptide was confirmed to exhibit therapeutic effects on myocardial infarction.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 1, 2015
    Inventors: Katsuto Tamai, Sokichi Kamata, Yasufumi Kaneda, Shigeru Miyagawa, Yoshiki Sawa, Takehiko Yamazaki
  • Publication number: 20150231312
    Abstract: Provided is an advanced heart failure treatment material, as a myocardial/cardiovascular regeneration device, that self-assembles, which can improve the universality and be used in an emergency by commercialization with no need of cell-culturing (cell-free) by controlling stem cells, and has a high therapeutic effect on the fundamental treatment of intractable cardiovascular diseases, in particular, advanced heart failure, in which not only the saving of lives but also improving the patient's quality of life (QOL) are urgent issues. The advanced heart failure treatment material includes a pharmaceutical agent, an agent holding for the pharmaceutical agent, and a myocardial support device.
    Type: Application
    Filed: September 13, 2013
    Publication date: August 20, 2015
    Inventors: Yoshiki Sawa, Shigeru Miyagawa, Satsuki Fukushima, Atsuhiro Saito, Yoshiki Sakai, Kazuhisa Matsuda, Takayuki Maruyama
  • Publication number: 20150110756
    Abstract: The present invention provides a prosthetic tissue or sheet capable of withstanding implantation operations, which can be used in actual operation and can be produced by culture. The present invention also provides a novel therapy which can substitute for cell therapy. Particularly, the present invention provides a method for producing a prosthetic tissue comprising a cell derived from a part other than myocardium and capable of withstanding implantation operation. The above-described objects of the present invention were partially achieved by finding that by culturing cells under specific culture conditions, the cells are unexpectedly organized into a tissue, and the resultant prosthetic tissue is capable of being detached from culture dishes. The present invention also provides a three-dimensional structure applicable to heart, comprising a cell derived from a part other than the myocardium of an adult.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 23, 2015
    Inventors: Hikaru MATSUDA, Yoshiki Sawa, Satoshi Taketani, Shigeru Miyagawa
  • Publication number: 20150032223
    Abstract: A cell sheet transplantation device having a plane for transplanting a sheet of cultured cells, the device comprising, in the plane in the same direction, (1) a planar surface portion for capturing a cell sheet while maintaining a sheet-shaped form, and (2) suction holes for immobilizing a transplantation site by suction, the suction holes being positioned around the planar surface portion. By using the cell sheet transplantation device, a cultured cell sheet can be detached effectively, and the detached cultured cell sheet can be transplanted in an effective and simple manner.
    Type: Application
    Filed: April 2, 2012
    Publication date: January 29, 2015
    Applicants: CELLSEED INC., OSAKA UNIVERSITY
    Inventors: Shigeru Miyagawa, Atsuhiro Saito, Yoshiki Sawa, Manabu Mizutani, Akima Harada
  • Publication number: 20140335297
    Abstract: An oxygen-absorbing resin composition containing a base resin having a thermoplastic resin; and an oxygen-absorbing component having at least the one selected from the group consisting of an ester, an amide, an imide or a dicarboxylic acid derived from an acid anhydride represented by the following formula (1), wherein, a ring X is an aliphatic ring having an unsaturated bond, n is a number of the substituents Y bonded to the ring X and is an integer of 0 or 1, and Y is an alkyl group, and a polymer having a constituent unit stemming from the acid anhydride. An oxygen-absorbing polyester resin composition exhibits excellent oxygen-absorbing property even in the absence of transition metal catalyst without accompanied by the deterioration of the polyester resin used as a the base resin, the oxygen-absorbing property being strong enough for maintaining gas-barrier properties.
    Type: Application
    Filed: December 26, 2012
    Publication date: November 13, 2014
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Yoshiki Sawa, Yukiko Hirayama, Toshiki Yamada
  • Patent number: 8759099
    Abstract: The disclosed islet isolation method comprises: an injection step of injecting a preservation solution into the pancreatic duct of an excised pancreas; a preservation step of immersing the pancreas into an immersion fluid for preservation; a digestion step of breaking down the pancreas to provide pancreatic tissue; and a purification step of immersing the pancreatic tissue in a purification solution to provide islets. The digestion step consists of: an enzyme injection step of injecting an enzyme solution containing a digestion enzyme into the pancreas; a digestion initiation step of activating the digestion enzyme; a digestion termination step of inactivating the digestion enzyme; and a collection step of collecting the broken-down pancreatic tissue.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: June 24, 2014
    Assignee: Otsuka Pharmaceutical Factory, Inc.
    Inventors: Masahiro Tanemura, Yoshiki Sawa, Akira Myoui, Toshinori Ito, Masaki Mori, Yuichiro Doki
  • Publication number: 20140072599
    Abstract: The types and relative proportions of cells constituting a cell sheet stack, and the number of cells to be seeded are altered to change the state of the cells in the cell sheet stack, whereby production of an angiogenesis-promoting cytokine as well as construction of a vascular endothelial network can be optimized.
    Type: Application
    Filed: February 28, 2012
    Publication date: March 13, 2014
    Applicants: Osaka University, Tokyo Women's Medical University
    Inventors: Masahiro Kinooka, Atsuhiro Saito, Yoshiki Sawa, Tatsuya Shimizu, Teruo Okano
  • Publication number: 20130284617
    Abstract: To provide an oxygen-absorbing polyester resin composition which exhibits excellent oxygen-absorbing capability even in the absence of transition metal catalyst without affected by the glass transition temperature of a polyester resin that is contained as a base resin. The oxygen-absorbing polyester resin composition including a base resin (A) which is a polyester resin, an oxygen-absorbing component (B) which is a compound having an unsaturated alicyclic structure, and an oxidation promotion component (C) for promoting the oxidation of the oxygen-absorbing component (B), said oxidation promotion component (C) being a compound having a benzyl hydrogen.
    Type: Application
    Filed: January 12, 2012
    Publication date: October 31, 2013
    Applicant: TOYO SEIKAN GROUP HOLDINGS, LTD.
    Inventors: Toshiki Yamada, Yukiko Hirayama, Yoshiki Sawa
  • Publication number: 20130177986
    Abstract: The disclosed islet isolation method comprises: an injection step of injecting a preservation solution into the pancreatic duct of an excised pancreas; a preservation step of immersing the pancreas into an immersion fluid for preservation; a digestion step of breaking down the pancreas to provide pancreatic tissue; and a purification step of immersing the pancreatic tissue in a purification solution to provide islets. The digestion step consists of: an enzyme injection step of injecting an enzyme solution containing a digestion enzyme into the pancreas; a digestion initiation step of activating the digestion enzyme; a digestion termination step of inactivating the digestion enzyme; and a collection step of collecting the broken-down pancreatic tissue.
    Type: Application
    Filed: July 13, 2011
    Publication date: July 11, 2013
    Inventors: Masahiro Tanemura, Yoshiki Sawa, Akira Myouri, Toshinori Ito, Masaki Mori, Yuichiro Doki
  • Publication number: 20130109092
    Abstract: A method of obtaining pancreatic endocrine cells from cells originating in an adipose tissue characterized by comprising culturing the adipose tissue-origin cells; the pancreatic endocrine cells that can be obtained thereby; a method of treating or preventing a disease caused by the hypofunction in pancreatic endocrine cells wherein the above-described pancreatic endocrine cells are used; a method of screening a substance capable of promoting or inhibiting the differentiation into pancreatic endocrine cells characterized by comprising adding a candidate substance to a medium in the course of culturing adipose tissue-origin cells to obtain the pancreatic endocrine cells; and so on.
    Type: Application
    Filed: June 15, 2012
    Publication date: May 2, 2013
    Applicant: OSAKA UNIVERSITY
    Inventors: Akifumi Matsuyama, Hiroshi Komoda, Yoshiki Sawa, Yuzuru Kanakura
  • Publication number: 20130101659
    Abstract: Provided are a cell sheet and a three-dimensional structure thereof that include at least mesenchymal stem cells and myoblasts isolated from a cell culture support and that are to be applied to heart disease. Use of the cell sheet and the three-dimensional structure thereof including mesenchymal stem cells and myoblasts can notably improve cardiac functions compared with a conventional technology, i.e., use of cell sheets composed of myoblasts only or mesenchymal stem cells only. Furthermore, the cell sheet itself has high strength, and the transplantation procedure is also improved.
    Type: Application
    Filed: September 9, 2010
    Publication date: April 25, 2013
    Inventors: Yoshiki Sawa, Yasuhiro Shudo, Shigeru Miyagawa, Tatsuya Shimizu, Teruo Okano, Akifumi Matsuyama, Atsuhiro Saito
  • Publication number: 20120308533
    Abstract: The present invention aims to provide an artificial tissue that can efficiently reproduce myocardial tissue function and that can be used in an actual implantation and produced by culturing. The present invention relates to a graft material for treating myocardial disease, the graft material including a cell sheet containing adipocytes.
    Type: Application
    Filed: October 8, 2010
    Publication date: December 6, 2012
    Applicants: OSAKA UNIVERSITY, CELLSEED INC.
    Inventors: Yukiko Imanishi, Yoshiki Sawa, Iichiro Shimomura, Norikazu Maeda, Shigeru Miyagawa, Hideaki Sakai
  • Patent number: 8263405
    Abstract: To provide a new reductive-stimuli-responsive degradable gel that allows any control of decomposition of the three-dimensional base material for cell culture and production of a completely biological three-dimensional cellular structure consisting only of cells and cells-produced extracellular matrix and that allows safe recovery of the cellular structure produced. A stimuli-responsive hydrogel, characterized by being produced by crosslinking a water-soluble polymer with a compound having a disulfide bond in the molecular chain.
    Type: Grant
    Filed: November 24, 2006
    Date of Patent: September 11, 2012
    Assignees: NOF Corporation
    Inventors: Mitsuru Akashi, Yoshiki Sawa, Michiya Matsusaki