Patents Assigned to Gunze Limited
  • Patent number: 8481673
    Abstract: The present invention provides a method for reducing the content of a metal catalyst in a biodegradable and absorbable polymer that can be applied on an industrial scale and a method for producing a biodegradable and bioabsorbable polymer having a metal catalyst content of less than 1 ppm in terms of a metal. The method includes the steps of (1) copolymerizing lactide and ?-caprolactone at a molar ratio ranging from 40/60 to 60/40 or 65/35 to 85/15 in the presence of the metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a volume ratio ranging from 25/75 to 45/55 or 45/55 to 55/45 at less than 40° C., and drying the copolymer.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: July 9, 2013
    Assignee: Gunze Limited
    Inventors: Hidetoshi Arimura, Yoshitake Takahashi, Koji Yamauchi
  • Publication number: 20130162596
    Abstract: The object of the present invention is to provide a touch switch that enables reduction in the low-sensitivity region where the contact by fingers cannot be detected. The touch switch of the present invention comprises an insulating layer; sensor electrodes as a plurality of first electrodes provided on one surface of the insulating layer; a plurality of wire portions provided on one surface of the insulating layer, individually connected to the sensor electrodes; and auxiliary electrodes as a plurality of second electrodes provided on the other surface of the insulating layer, each auxiliary electrode being provided in a portion opposite each sensor electrode, wherein a boundary of adjacent auxiliary electrodes is provided in a region between adjacent sensor electrodes.
    Type: Application
    Filed: October 18, 2011
    Publication date: June 27, 2013
    Applicant: Gunze Limited
    Inventors: Katsumasa Kono, Keisaku Kimura
  • Publication number: 20130105313
    Abstract: There is provided a biosensor which includes: a substrate formed of an insulator; a set of electrodes provided on the substrate; a reaction part provided on the set of electrodes; a supply port for introducing blood (a specimen) to the reaction part; an attachment part for connecting the set of electrodes to a terminal of a measurement display; and a picking plate having a picking part to be picked up, the picking plate extending to a side opposite from the attachment part with respect to the reaction part and being bent in a cross-sectional direction perpendicular to the extending direction.
    Type: Application
    Filed: July 8, 2011
    Publication date: May 2, 2013
    Applicant: GUNZE LIMITED
    Inventors: Takafumi Tanaka, Hideki Tanaka, Hideki Sato
  • Publication number: 20130087008
    Abstract: A sliding cable is provided that basically includes a cable main body and a mesh structural body. The cable main body is made of a plurality of steel wires bundled together. The mesh structural body is arranged on an outer surface of the cable main body.
    Type: Application
    Filed: August 9, 2012
    Publication date: April 11, 2013
    Applicants: GUNZE LIMITED, SHIMANO INC.
    Inventors: Atsuhiro NISHIMURA, Kenji OSE, Takamoto ASAKAWA, Shoichi TSUKADA, Yoshiyuki NAGAI, Koji NISHIYA
  • Publication number: 20130066042
    Abstract: The present invention provides a method for reducing the content of a metal catalyst in a biodegradable and absorbable polymer that can be applied on an industrial scale and a method for producing a biodegradable and bioabsorbable polymer having a metal catalyst content of less than 1 ppm in terms of a metal. The method includes the steps of (1) copolymerizing lactide and ?-caprolactone at a molar ratio ranging from 40/60 to 60/40 or 65/35 to 85/15 in the presence of the metal catalyst to produce a copolymer; and (2) washing the copolymer with a mixed solvent comprising acetic acid and isopropanol at a volume ratio ranging from 25/75 to 45/55 or 45/55 to 55/45 at less than 40° C., and drying the copolymer.
    Type: Application
    Filed: September 21, 2012
    Publication date: March 14, 2013
    Applicant: GUNZE LIMITED
    Inventor: GUNZE LIMITED
  • Patent number: 8372433
    Abstract: The scaffold for culturing a cardiovascular tissue of the present invention is a scaffold for culturing a cardiovascular tissue, which is tubular, and comprises a foamed polymer comprising a bioabsorbable material reinforced with a reinforcing material comprising a bioabsorbable material, the foamed polymer comprising lactide (D, L, DL isomer)-?-caprolactone copolymer containing lactide (D, L, DL isomer) in a content of 50 to 54 mole % and ?-caprolactone in a content of 50 to 46 mole %, and the reinforcing material being covered with the foamed polymer.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: February 12, 2013
    Assignee: Gunze Limited
    Inventors: Toshiharu Shinoka, Goki Matsumura, Yoshito Ikada, Shojiro Matsuda, Yuki Sakamoto, Tsuguyoshi Taira
  • Patent number: 8367169
    Abstract: A multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate including at least three layers, namely, a polyester-based resin layer (Layer A), a polyamide-based resin layer (Layer B), and a polyester-based resin layer (Layer A), in this order (wherein the two Layers A may be the same or different) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; both of the Layers A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: February 5, 2013
    Assignees: Gunze Limited, Dai Nippon Printing Co., Ltd
    Inventors: Norio Uehara, Hiroyuki Yoshizaki, Naoyuki Maruichi
  • Patent number: 8367192
    Abstract: A main object of the present invention is to provide an intermediate transfer belt for image-forming devices and a method for producing the intermediate transfer belt, the intermediate transfer belt having excellent image transfer to rough paper and resistance to abrasion and being free from problems such as filming, by forming a surface layer that has excellent resistance to abrasion and in which defects such as pinholes are not likely to occur even when the surface layer is thinned.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: February 5, 2013
    Assignee: Gunze Limited
    Inventors: Takashi Kuraoka, Satoshi Mitsui, Yuukii Matsumura
  • Patent number: 8363016
    Abstract: A transparent touch panel comprises a transparent first substrate (110) and a second substrate (130) that each has a transparent electro-conductive layer (111, 131) on one surface and that are arranged with a predetermined interval between each other such that the transparent electro-conductive layers (111, 131) are facing each other. Each of the transparent electro-conductive layers (111, 131) has a pair of electrodes (112, 112) and (132, 132) disposed on each end. Lead-out terminals (114, 114) and (134, 134) are connected to each electrode (112, 132) through surrounding circuits (113, 133) formed on the peripheral edges of the transparent first substrate (110) and the second substrate (130). Lead-out terminals (114, 134) are arranged on each of the opposing surfaces of the transparent first substrate (110) and of the transparent second substrate (130), and a plurality of holding members (80, 80), (81, 81) for holding the edges of the transparent first substrate (110) is provided.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: January 29, 2013
    Assignee: Gunze Limited
    Inventor: Seiichi Murakami
  • Patent number: 8314204
    Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: November 20, 2012
    Assignees: Gunze Limited, Ube Industries, Ltd.
    Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
  • Patent number: 8303852
    Abstract: A carbon black-dispersed polyamic acid solution composition that utilizes carbon black excelling in safety and environmental adaptability and excels in the dispersion stability and fluidity of carbon black dispersed in polyamic acid solution, and that realizes high solid content and high carbon black content. An intermediate transfer belt of polyimide, which produces a transfer image of high quality in a color image-forming apparatus, produced from the polyamic acid solution composition. In particular, a carbon black-dispersed polyamic acid solution composition containing a polyamic acid solution obtained by reaction of approximately equimolar amounts of biphenyltetracarboxylic acid dianhydride and an aromatic diamine, and containing a carbon black of 2 to 6% volatile content produced by oil furnace process, wherein the solid content of the solution composition is 23 wt. % or more and wherein the carbon black content of the solid is in the range of 20 to 30 wt. %.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 6, 2012
    Assignees: Gunze Limited, Ube Industries, Ltd.
    Inventors: Naoki Nishiura, Takashi Kuraoka, Toru Murakami
  • Patent number: 8286268
    Abstract: A freely cuttable garment is provided. The freely cuttable garment is capable of being cut by a consumer into any design shape for use. The garment is formed of a fray-preventing knitted fabric woven with heat-welding elastic yarn. Sizes of opening parts of the neck, side, and bottom of the garment are smaller than those of a standard product; a total length and sleeve length of the garment are larger than those of the standard product; and a body width, cuff, waist, and lower bottom edge of the garment are equal to those of the standard product. The garment can be cut into any design shape and can be used with the opening parts left cut-off.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: October 16, 2012
    Assignee: Gunze Limited
    Inventors: Mizue Yamashita, Naoko Fujimoto, Hitomi Arimura, Akira Nakai, Tsutomu Suzuoki, Shinobu Tabata, Masayuki Tani, Taisuke Yamamoto
  • Patent number: 8187683
    Abstract: An object of the present invention is to provide a multilayered polyamide-based tube for food packaging that is free from blocking in a Layer (C), and that has an excellent adherence to processed meat or like packaged food. The present invention provides a multilayered polyamide-based tube for food packaging comprising a Layer (A), a Layer (B) and a Layer (C); the multilayered polyamide-based tube having a low-temperature shrinkage ratio of 2 to 10%, and exhibiting heat shrinkage properties and gas barrier properties; the Layer (A) containing a polyamide-based resin; the Layer (B) containing a polyolefin-based resin; and the Layer (C) that comes in contact with the packaged food, the Layer (C) being a Layer (C-1) that contains a polypropylene-based resin having a heat distortion temperature (ISO 75B-1 or ISO 75B-2) of not less than 60° C. and a Vicat softening point of not less than 120° C.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: May 29, 2012
    Assignee: Gunze Limited
    Inventors: Hiroki Kuriu, Hiroyuki Yabuta
  • Publication number: 20120130064
    Abstract: This invention provides a method for hydrophilic treatment of cellulose fibers that can prevent coloring or decrease in fiber strength. The hydrophilic treatment method comprises a first oxidation step of oxidizing cellulose fibers in a first reaction solution containing an N-oxyl compound and a re-oxidizing agent for the N-oxyl compound; and a second oxidation step of oxidizing oxycellulose fibers obtained in the first oxidation step in a second reaction solution containing an oxidizing agent for oxidizing aldehyde groups.
    Type: Application
    Filed: August 24, 2010
    Publication date: May 24, 2012
    Applicants: GUNZE LIMITED, THE UNIVERSITY OF TOKYO
    Inventors: Akira Isogai, Tsuguyuki Saito, Chiaki Tanaka, Yoshinari Yui
  • Patent number: 8177797
    Abstract: The present invention relates to a tubular suture reinforcement material suitable for use in automatic suturing devices that are widely used in surgical operations, etc. More specifically, the present invention relates to a tubular suture reinforcement material with which a tubular shape is easily obtained to thereby increase its productivity, and removal of thread is easily achieved. The present invention provides a tubular suture reinforcement material for an automatic suturing device formed by stacking two sheet-like materials and sewing together both ends of the two sheet-like materials using two chain stitches (intralooping stitches) each thread end at each sewing end is suitably extended, and the thread end is passed through an anterior loop continuous to the thread end, thereby preventing the thread from unraveling.
    Type: Grant
    Filed: July 16, 2004
    Date of Patent: May 15, 2012
    Assignee: Gunze Limited
    Inventors: Hiroyuki Shimoji, Hitoshi Ohtani
  • Patent number: 8178021
    Abstract: The invention resides in enabling biodegradable filament of polylactic acid, polyglycolic acid and the like to manufacture biodegradable micro-filament by simple and convenient means without needing special, high-accuracy and high-level apparatus; it is characterized in that highly molecular oriented micro-filament those of 12 ?m or less and generally from 2 ?m to 3 ?m can be obtained by heating biodegradable filament by infrared beam and the heated original filament is drawn to 100 times or more by tension of 10 MPa or less.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: May 15, 2012
    Assignees: University of Yamanashi, Gunze Limited
    Inventor: Akihiro Suzuki
  • Patent number: 8173558
    Abstract: A polyurethane elastomeric filament-containing weft knit fabric is obtained by plating a bare yarn of highly fusible, alkali-resistant polyurethane elastomeric filament having at least 50% retention of tenacity following dry heat treatment under 100% extension at 150° C. for 45 seconds, a melting point of 180° C. or below, and at least 60% retention of tenacity following treatment in a 2 g/L aqueous sodium hydroxide solution under 100% extension at 100° C. for 60 minutes at every loop of a weft knit fabric having a 1×1 rib knit structure or a center yarn-containing reversible knit structure composed of at least one type of non-elastomeric yarn, then heat setting the plated structure so as to thermally fuse the highly fusible, alkali-resistant polyurethane elastomeric filaments to each other or to the non-elastomeric yarns at crossover points therebetween.
    Type: Grant
    Filed: June 7, 2005
    Date of Patent: May 8, 2012
    Assignees: Nisshinbo Textile Inc., Gunze, Limited
    Inventors: Kunihiro Fukuoka, Koji Nishio, Seiji Yamahara, Takahiro Yamazaki, Takashi Maruoka, Fumiyuki Yamasaki, Susumu Kibune, Tsutomu Suzuoki, Shigeo Souda, Taisuke Yamamoto, Kouji Kimura, Shinobu Tabata
  • Patent number: 8169601
    Abstract: A primary object of the present invention is to provide a multilayer heat-shrinkable styrene-based film that makes it possible, even when the film is transparent, to confirm that the film is correctly applied on a drink bottle and the like as a label. The present invention provides a heat-shrinkable styrene-based film having at least one layer containing a styrene-based resin containing a copolymer b1 of 98 to 40% by weight vinyl aromatic hydrocarbon and 2 to 60% by weight aliphatic unsaturated carboxylic acid ester, and/or a block copolymer b2 of 70 to 85% by weight vinyl aromatic hydrocarbon and 15 to 30% by weight conjugated diene hydrocarbon, and a fluorescent brightening agent in an amount of 100 to 2,000 weight ppm with respect to the total weight of the styrene-based resin. The present invention also provides a heat-shrinkable film having a three-layer structure containing front and back layers and a core layer, wherein the above-mentioned copolymer b1 and/or copolymer b2 forms the core layer.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: May 1, 2012
    Assignee: Gunze Limited
    Inventors: Masaharu Maruo, Akira Morikawa, Naoki Ohno, Tadayoshi Tanaka
  • Patent number: 8168252
    Abstract: The present invention provides an electromagnetic wave shielding material that has high electromagnetic wave shielding effects, excellent transparency, and excellent see-through property, and a simple and inexpensive production process for the electromagnetic wave shielding material. Specifically, the present invention provides a process for producing an electromagnetic wave shielding material, the process comprising screen-printing in a geometric pattern a conductive paste containing a particulate silver oxide, a tertiary fatty acid silver salt, and a solvent, onto a transparent porous layer surface of a transparent resin substrate having a transparent porous layer containing as a main component at least one member selected from the group consisting of oxide ceramics, non-oxide ceramics, and metals; and performing heat treatment to form a conductive region with a geometric pattern on the transparent porous layer surface; and an electromagnetic wave shielding material produced by the production process.
    Type: Grant
    Filed: May 19, 2005
    Date of Patent: May 1, 2012
    Assignees: Gunze Limited, Fujikura Kasei Co., Ltd.
    Inventors: Atsushi Okada, Akio Kiyohara, Hideki Tanaka, Toshiyuki Honda, Masafumi Ito, Junichi Kato, Noboru Toshima, Yasuhisa Nakao
  • Publication number: 20120040117
    Abstract: A multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate including at least three layers, namely, a polyester-based resin layer (Layer A), a polyamide-based resin layer (Layer B), and a polyester-based resin layer (Layer A), in this order (wherein the two Layers A may be the same or different) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; both of the Layers A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Application
    Filed: June 15, 2011
    Publication date: February 16, 2012
    Applicants: DAI NIPPON PRINTING CO., LTD., GUNZE LIMITED
    Inventors: Norio UEHARA, Hiroyuki Yoshizaki, Naoyuki Maruichi