Patents Assigned to Gunze Limited
  • Publication number: 20250025144
    Abstract: A medical material makes it possible to perform less invasive treatment of atrial septal defect and is unlikely to cause problems in the late post-treatment period. A medical material includes a substantially middle portion and two tubular portions (first tubular portion, second tubular portion) having a mesh structure formed of a bioabsorbable linear material and includes a proximal connecting part connected to a first end and a distal connecting part connected to a second end and threaded to a delivery cable. The proximal connecting part and the distal connecting part are configured to reversibly or irreversibly achieve a locked state and an unlocked state, the locked state being a state in which the proximal connecting part and the distal connecting part remain united, the unlocked state being a state in which the proximal connecting part and the distal connecting part do not remain united.
    Type: Application
    Filed: August 22, 2022
    Publication date: January 23, 2025
    Applicant: GUNZE LIMITED
    Inventors: Yuuki KATO, Hinami NAKAMURA
  • Publication number: 20240392095
    Abstract: A method for recovering a cyclic olefin resin includes: a composite material containing at least a cyclic olefin resin, and a different resin that is different from the cyclic olefin resin is dissolved in a solvent capable of dissolving the cyclic olefin resin to produce a solution, and a different resin component, which contains the different resin, is precipitated out; the solution is filtered and a filtrate is obtained by removing the different resin component; and a composition containing the cyclic olefin resin is obtained from the filtrate.
    Type: Application
    Filed: September 28, 2022
    Publication date: November 28, 2024
    Applicant: GUNZE LIMITED
    Inventors: Tsukasa NAKAO, Tatsuya KIBAYASHI, Asuka KOIKE
  • Publication number: 20240383239
    Abstract: A heat-shrinkable film for lamination of an ink layer formed by biomass ink includes a printing layer. The printing layer includes a thermoplastic resin and has a printing surface configured to allow the ink layer to be laminated. An oxidation induction time T (min) of the printing layer satisfies 0.15?T?12. The oxidation induction time T is an oxidation induction time T1 measurable in air at 200° C., an oxidation induction time T2 measurable in air at 230° C., or the shorter one of T1 and T2.
    Type: Application
    Filed: July 26, 2022
    Publication date: November 21, 2024
    Applicant: GUNZE LIMITED
    Inventors: Nobuhiro WATANABE, Jun TAKAICHI, Kensuke KAMEI
  • Publication number: 20240326389
    Abstract: A heat shrinkable film manufacturing method includes: preparing packaging materials including film labels having resin layers mainly including thermoplastic resin and print layers; preparing first and second virgin raw materials of thermoplastic resin; recovering, from the resin layers, a recycled raw material of thermoplastic resin; and forming a resin-based film including the recycled raw material as a raw material so as to have a core layer and a surface layer layered on the core layer wherein the forming the resin film includes at least one of: forming the core layer including at least the recycled raw material and the first virgin raw material and the surface layer mainly including the second virgin raw material; and forming the core layer including the first virgin raw material and the surface layer including the second virgin raw material and at most 25 wt % of the recycled material.
    Type: Application
    Filed: August 3, 2022
    Publication date: October 3, 2024
    Applicant: GUNZE LIMITED
    Inventors: Tatsuya KIBAYASHI, Tsukasa NAKAO
  • Publication number: 20240326390
    Abstract: A manufacturing method for a heat shrinkable film includes: preparing a packaging material that includes film labels having a resin layer mainly contains thermoplastic resin, and a printed layer; recovering first and second recycled raw materials from the resin layer; and forming a resin film with a core layer including the recycled raw materials and a surface layer layered onto the core layer and includes thermoplastic resin. Recovering the recycled raw materials includes: forming, into individual pieces, the packaging material and/or the resin layer from which the printed layer has been removed; and separating the printed layer from the packaging material and/or pieces of the packaging material to obtain the resin layer from which the printed layer has been removed and/or pieces of the resin layer from which the printed layer has been removed. One of the recycled raw materials is polyester-based resin, and the other is polystyrene-based resin.
    Type: Application
    Filed: August 3, 2022
    Publication date: October 3, 2024
    Applicant: GUNZE LIMITED
    Inventors: Tatsuya KIBAYASHI, Tsukasa NAKAO
  • Publication number: 20240293601
    Abstract: A skeletal structure for an artificial pinna includes a base portion formed in a flat shape with a fibrous structural body using a bioabsorbable material, and a helix portion and an antihelix portion disposed on the front surface of the base portion. In the skeletal structure, the base portion is provided with a two-dimensional elastic structure, and the helix portion and the antihelix portion are provided with a three-dimensional fiber structure formed with the fibrous structural bodies. Thus, a flexible skeletal structure can be provided.
    Type: Application
    Filed: June 17, 2022
    Publication date: September 5, 2024
    Applicants: KINKI UNIVERSITY, GUNZE LIMITED
    Inventors: Noritaka ISOGAI, Takeshi TERAMURA, Kazunari MASUTANI, Hiroshi MITACHI, Takatoshi YOTSUYANAGI
  • Patent number: 12015140
    Abstract: The present invention aims to provide a method for producing a pinhole-free thin resin current collector for negative electrodes. The method for producing a sheet-shaped resin current collector for negative electrodes of the present invention includes stacking three or more layers of melts of conductive resin compositions each containing a polyolefin and a conductive filler to obtain a multilayered body, wherein the polyolefin contained in each of the conductive resin compositions that form the respective layers of the multilayered body has a melt mass flow rate of 15 to 70 g/10 min as measured at a temperature of 230° C. and a load of 2.16 kg in accordance with JIS K7210-1:2014.
    Type: Grant
    Filed: October 21, 2019
    Date of Patent: June 18, 2024
    Assignees: SANYO CHEMICAL INDUSTRIES, LTD., GUNZE LIMITED
    Inventors: Ryosuke Kusano, Yasuhiro Tsudo, Yasuji Maruyama, Kazuaki Onishi, Yasuhiko Ohsawa, Yuki Kusachi, Hajime Satou, Hiroshi Akama, Hideaki Horie
  • Publication number: 20240181692
    Abstract: This method for producing a resin film includes the following: preparing, as a starting material, at least either a film label that includes an ink layer and a resin layer or a resin bottle to which the film label is fitted; recovering a thermoplastic resin having a specific gravity of less than 1 from the starting material; and obtaining a resin film having a specific gravity of less than 1 by extrusion molding, while having a molding material contain the recovered thermoplastic resin, wherein the recovering includes the following: dividing the starting material or the resin layer into individual pieces; removing the ink layer from the film label or each piece of the film label; and subjecting the starting material, the resin layer or pieces of the starting material or the resin layer to specific gravity separation.
    Type: Application
    Filed: April 7, 2022
    Publication date: June 6, 2024
    Applicant: GUNZE LIMITED
    Inventors: Jun TAKAICHI, Nobuhiro WATANABE, Tatsuya KIBAYASHI, Kensuke KAMEI
  • Patent number: 11958272
    Abstract: The present invention provides a heat shrinkable multilayer film that makes it possible to produce a heat shrinkable label having high seal strength regardless of interlaminar strength, and that also has excellent transparency. The present invention also provides a heat shrinkable label including the heat shrinkable multilayer film. Provided is a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, and the adhesive layers each contain a polyester resin having a glass transition temperature of 77° C. or lower.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: April 16, 2024
    Assignee: GUNZE LIMITED
    Inventors: Naoki Ohno, Yusuke Onishi
  • Patent number: 11931479
    Abstract: The present invention provides an artificial blood vessel that can achieve a balance between cell penetration efficiency and crush resistance and can regenerate a blood vessel at very high efficiency. Provided is an artificial blood vessel having a tubular shape, including: a foam containing a bioabsorbable material; a reinforcement A containing a bioabsorbable material; and a reinforcement B including threads containing a bioabsorbable material, the foam being reinforced with the reinforcements A and B, wherein the reinforcement A is a non-woven fabric, a film, or a weft-knitted, warp-knitted, or woven fabric made of knitted or woven fibers, the reinforcement B includes monofilament threads each having a cross-sectional diameter of 0.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: March 19, 2024
    Assignee: GUNZE LIMITED
    Inventors: Goki Matsumura, Hideki Sato, Mieko Ishikawa
  • Patent number: 11912002
    Abstract: The present invention provides a heat shrinkable multilayer film that makes it possible to produce a heat shrinkable label having high seal strength regardless of interlaminar strength, and that also has excellent transparency. The present invention also provides a heat shrinkable label including the heat shrinkable multilayer film. Provided is a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, and the adhesive layers each contain a polyester resin having a glass transition temperature of 77° C. or lower.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: February 27, 2024
    Assignee: GUNZE LIMITED
    Inventors: Naoki Ohno, Yusuke Onishi
  • Publication number: 20240037590
    Abstract: There is provided a management system including a first calculation unit, a second calculation unit, a storage unit, and a credit management unit. The first calculation unit calculates an increase amount of credit based on the purchase mass and the parameter representing the degree of reduction in environmental load in accordance with the purchase of plastic materials. The second calculation unit calculates a decrease amount of credit in accordance with either the transfer or production of the product. The storage unit stores an initial balance. The credit management unit updates a credit balance based on the initial balance, the increase amount, and the decrease amount.
    Type: Application
    Filed: May 11, 2023
    Publication date: February 1, 2024
    Applicant: GUNZE LIMITED
    Inventors: Nobuhiro WATANABE, Ibuki SHIMAZAKI
  • Patent number: 11802199
    Abstract: There is provided a thermoplastic fluororesin tube that, during the production of a catheter, can prevent a gap or air bubbles from being formed in the connection part of the catheter, and can be suitably used for the production of a catheter. A thermoplastic fluororesin tube, the thermoplastic fluororesin tube having tearability in a longitudinal direction, wherein a thermal expansion coefficient in the longitudinal direction upon heating in a gaseous phase at a temperature of 100° C. for 5 minutes is 0% or more.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: October 31, 2023
    Assignee: Gunze Limited
    Inventors: Kazutaka Sekiya, Hiroshi Ohshima, Daiki Kobayashi, Masashi Kikuchi
  • Patent number: 11642875
    Abstract: The present invention provides a heat shrinkable multilayer film that can prevent wrinkles or loosening after attachment when the film is attached to a container as a heat shrinkable label for dry heat shrinking, and a heat shrinkable label including the heat shrinkable multilayer film as a base film. Provided is a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; and an interlayer containing a polystyrene resin, wherein the heat shrinkable multilayer film has a dimensional change in a TD represented by an equation (1) of ?55 to ?1000 ?m as measured by thermomechanical analysis (TMA) in which the temperature of the heat shrinkable multilayer film under a load of 0.10 N is increased from 30° C. to 60° C. at a temperature increase rate of 5° C./min and then cooled from 60° C. to 10° C. at a temperature decrease rate of 5° C./min, the equation (1) being: Dimensional change=dimension in TD at 20° C. ?dimension in TD at 60° C. (1).
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: May 9, 2023
    Assignee: GUNZE LIMITED
    Inventor: Naoki Ohno
  • Patent number: 11571197
    Abstract: An in-tube transit object that is inserted in a tube includes: a coil section formed by winding a wire; and a fiber section attached to an end on one side and an end on the other side in a winding-axis direction of the coil section. The coil section is formed with a large diameter section, through which fiber of the fiber section is inserted, at the end on the one side and the end on the other side, and is inserted in an extending state in the winding-axis direction when the in-tube transit object is inserted into the tube. The fiber section is configured to expand when seen in the winding-axis direction in the case where the in-tube transit object is inserted in the tube and then discharged from the tube, which brings the coil section into a compressed state in the winding-axis direction.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: February 7, 2023
    Assignees: Mikuro Spring Co., Ltd., GUNZE LIMITED
    Inventors: Takayuki Koyama, Makoto Natori, Yusuke Sato, Saki Okumura, Yuuki Kato, Mieko Ishikawa
  • Patent number: 11484313
    Abstract: The present invention aims to provide a staple reinforcement for a surgical stapler that can be used in surgical staplers of various sizes, is easily passed through ports, and is less likely to shift during operation of the surgical stapler. Provided is a staple reinforcement for a surgical stapler, including a fabric layer containing a bioabsorbable material and a sponge layer containing a water-soluble polymer, the fabric layer and the sponge layer being integrally laminated.
    Type: Grant
    Filed: November 16, 2020
    Date of Patent: November 1, 2022
    Assignee: GUNZE LIMITED
    Inventors: Takashi Sawaki, Yasuhiro Ueno, Junki Ikeda
  • Patent number: 11453209
    Abstract: The present invention provides a heat shrinkable multilayer film that can prevent layer misalignment at a center seal portion and thereby provide a labelled container having excellent appearance when the film is attached to a container as a heat shrinkable label for dry heat shrinking, and a heat shrinkable label including the heat shrinkable multilayer film as a base film. Provided is a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, and the heat shrinkable multilayer film has a maximum shrinkage stress of 3.5 to 11 MPa when immersed in hot water at 80° C. for 30 seconds.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: September 27, 2022
    Assignee: Gunze Limited
    Inventor: Takanori Nozaki
  • Publication number: 20220218321
    Abstract: A hole closing material achieves less invasive treatment for atrial septal defect with no or little possibility of problems in the late post-treatment period. The hole closing material includes two tubular bodies (first tubular portion and second tubular portion) having a mesh structure formed of a bioabsorbable linear material, and includes: a proximal connecting part connected to a first end; and a distal connecting part connected to a second end and screwed to a delivery cable. The proximal connecting part and the distal connecting part are capable of selectively achieving: “locked” in which the proximal connecting part and the distal connecting part remain united; and “unlocked” in which the proximal connecting part and the distal connecting part do not remain united. The delivery cable passes through the substantially middle portion, is inserted into a hollow tube of the proximal connecting part, and passes out of the hole closing material in a direction from the second end to the first end.
    Type: Application
    Filed: July 7, 2020
    Publication date: July 14, 2022
    Applicant: GUNZE LIMITED
    Inventors: Hirotsugu KUROBE, Saki OKUMURA, Yuuki KATO, Koji YAMAUCHI
  • Publication number: 20220175355
    Abstract: A defect hole closing material achieves less invasive treatment for atrial septal defect with no or little possibility of problems in the late post-treatment period. A defect hole closing material includes two tubular bodies (a first tubular portion and a second tubular portion) made of a bioabsorbable material and having a mesh structure; and a substantially middle portion between the two tubular bodies. The first tubular portion is provided with a radiopaque material, the second tubular portion is provided with a radiopaque material, and the substantially middle portion is provided with a radiopaque material.
    Type: Application
    Filed: March 26, 2019
    Publication date: June 9, 2022
    Applicant: GUNZE LIMITED
    Inventor: Saki OKUMURA
  • Patent number: 11355758
    Abstract: A current collector for a lithium ion battery includes a first conductive resin layer and a second conductive resin layer. The first conductive resin layer includes a first conductive filler. The second conductive resin layer is formed on the first conductive resin layer and includes a second conductive filler. The first conductive filler is a conductive carbon. The second conductive filler contains at least one kind of metal element selected from the group consisting of platinum, gold, silver, copper, nickel, and titanium. A volume % of the second conductive filler in the second conductive resin layer on a first surface side, which is a first conductive resin layer side, is higher than that on the second surface side that is opposite to the first conductive resin layer.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: June 7, 2022
    Assignees: GUNZE LIMITED, APB Corporation
    Inventors: Kazuaki Onishi, Masahiro Uchimaru, Ryosuke Kusano, Sonomi Fukuyama, Shun Kudoh, Yasuhiro Tsudo, Hideaki Horie