Patents Assigned to Gunze Limited
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Patent number: 6645640Abstract: The present invention provides a multilayered polyamide film having at least two polyamide resin layers, which develops less than 10 pinholes when evaluated for pinhole resistance by flexing it 1,000-times at 25° C. and which has an elongation of 6 mm or less at 120° C. in vertical pitch evaluation. This film has excellent resistance to pinholes and is well suited for lamination.Type: GrantFiled: September 20, 2001Date of Patent: November 11, 2003Assignee: Gunze LimitedInventor: Hiroki Kuriu
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Patent number: 6616687Abstract: The present invention relates to a coating material for surgical sutures which comprises as essential ingredients a copolymer having repeating units of lactic acid and &egr;-caprolacton and calcium stearate; and a surgical suture comprising a lactic acid/&egr;-caprolacton copoymer in which a lactide/&egr;-caprolacton ratio is (70-85 mol %)/(30-15 mol %) and the number of &egr;-caprolacton repeating unit is 2.5 or greater on the average.Type: GrantFiled: April 26, 2001Date of Patent: September 9, 2003Assignee: Gunze LimitedInventors: Kenji Tomihata, Masakazu Suzuki, Ikuo Sasaki
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Patent number: 6572941Abstract: A touch panel is constructed of a top sheet member having a resistive membrane on its inner surface and a base sheet member having a resistive membrane on its inner surface, the top and base sheet members facing each other with dot spacers being located in between. The top sheet member is formed by laminating a PET film, a polarizing film, a ¼&lgr; retardation film, and a light isotropic film in this order from its outer surface. The PET film has a thermal expansion coefficient lower than the other films underneath, such as the polarizing film. Accordingly, the PET film serves to keep the other films of the top sheet member from bulging outward when the temperature rises.Type: GrantFiled: May 18, 2000Date of Patent: June 3, 2003Assignee: Gunze LimitedInventors: Yukio Murakami, Shunsuke Hirano
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Patent number: 6570707Abstract: A touch panel is constructed of a top sheet member having a resistive membrane on its inner surface and a base sheet member having a resistive membrane on its inner surface, the top and base sheet members facing each other with dot spacers being located in between. The top sheet member is formed by laminating a bulge-resistant film, a polarizing plate, a quarter wavelength plate, and a light isotropic film in this order from above. The base sheet member is constructed of a glass sheet and a reinforcement film whose thermal linear expansion coefficient is almost the same as the thermal linear expansion coefficient of the polarizing plate or the quarter wavelength plate included in the top sheet member, the reinforcement film being adhered to the lower surface of the glass sheet.Type: GrantFiled: November 8, 2000Date of Patent: May 27, 2003Assignee: Gunze LimitedInventors: Yukio Murakami, Shunsuke Hirano
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Patent number: 6559834Abstract: A touch panel is constructed of a top sheet member having a resistive membrane on its inner surface and a base sheet member having a resistive membrane on its inner surface, the top and base sheet members facing each other with dot spacers being located in between. The top sheet member is formed by laminating a bulge-resistant film, a polarizing plate, a quarter wavelength plate, and a light isotropic film in this order from above. A PET film which is not heat-treated so as to have a higher thermal contraction rate than the other members of the top sheet member underneath such as the polarizing plate, is used as the bulge-resistant film. Since the bulge-resistant film contracts more than the polarizing plate under a high ambient temperature, after the ambient temperature returns to normal, the bulge-resistant film does not become slack against the polarizing plate. Accordingly, the top sheet member can be kept from bulging outward.Type: GrantFiled: September 1, 2000Date of Patent: May 6, 2003Assignees: Gunze Limited, Sumitomo Chemical Company, Ltd.Inventors: Yukio Murakami, Shunsuke Hirano, Keiichi Minakuchi
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Patent number: 6547792Abstract: A bone fixing pin comprising a pin body section (2) consisting of poly-L-lactic acid and a metallic perforating section (3) joined to the pin body section (2) and having a drill (4) at a head thereof, wherein at least the pin body section (2) is, preferably both the pin body section (2) and the perforating section (3) are, formed to have a cylindrical shape having the same diameter through the whole of the length direction thereof. Accordingly, the bone fixing pin can be embedded into (buried into) bone fragments to be fixed easily and smoothly. In addition, loose is never caused to occur after the embedding. The embedded pin body section (2) consisting of poly-L-lactic acid is absorbed in an organism to be eliminated after synostosis.Type: GrantFiled: August 14, 2000Date of Patent: April 15, 2003Assignee: Gunze LimitedInventors: Koichiro Tsuji, Taichi Okutani
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Patent number: 6513656Abstract: The present invention provides a shrink-wrapped package comprising at least one article shrink-wrapped with a polyester film containing an ethylene terephthalate unit, the shrink-wrapped package having a portion of sealing and cutting whose starting point has a movement distance of 10 &mgr;m or less.Type: GrantFiled: December 22, 1999Date of Patent: February 4, 2003Assignee: Gunze LimitedInventors: Yuji Hanaoka, Fusazo Wada, Mina Okamoto
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Patent number: 6514291Abstract: The present invention provides an artificial dura mater characterized by comprising at least a sheet of a biodegradable and bioabsorbable synthetic polymer and having a storage modulus at ordinary temperature of from 1×107 to 5×108 (Pa); and a process for producing an artificial dura mater characterized by dissolving a lactide/&egr;-caprolactone copolymer (in a molar ratio ranging from 40/60 to 60/40) in a solvent, filtering the resultant solution and casting the same followed by air drying.Type: GrantFiled: April 6, 2000Date of Patent: February 4, 2003Assignee: Gunze LimitedInventors: Koji Yamauchi, Yoshito Ikada, Susumu Miyamoto, Keisuke Yamada, Tomohiko Asahara
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Patent number: 6507337Abstract: The primary object of the present invention is to provide a touch panel which has an excellent contact level between a undercoat layer and a substrate on which the undercoat layer is formed. The secondary object of the present invention to provide a touch panel which is lightweight and provided with a wide operating temperature and impact resistance. The primary object is achieved by providing a metal layer between a conductive-layer forming member and an undercoat layer, the metal layer being formed from a single metal element or an alloy of metal elements. The secondary object of the present invention is achieved by using an amorphous polyolefine base resin sheet for forming conductive-layer forming members of the touch and display substrates and using a material for forming a supporting member so that a difference between linear expansion coefficients of the supporting member and each of the conductive-layer forming members is kept within 1×10−5/° C.Type: GrantFiled: May 8, 2000Date of Patent: January 14, 2003Assignee: Gunze LimitedInventors: Hirotoshi Sato, Kazuhiro Noda, Shuji Furukawa, Kohtaro Tanimura
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Patent number: 6486296Abstract: A medical material which contains a lactide-containing polymer having weight-average molecular weight lower than 400000 as determined by GPC and has a lactide content of 4000 ppm or lower.Type: GrantFiled: November 27, 2000Date of Patent: November 26, 2002Assignee: Gunze LimitedInventors: Takeshi Shimamoto, Hideji Kagawa
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Patent number: 6448492Abstract: The invention provides a transparent member for use as a shield against electromagnetic waves characterized in that an electrically conductive reticular pattern is provided on a substrate (1) by forming a thin-film layer (2) of copper or an alloy thereof on the substrate by physical thin film formation and forming a copper thick-film layer (4) on the thin-film layer by plating so as to give the member a total transmittance of at least 50%, the reticular pattern having an electric resistivity of up to 200 m&OHgr;/□.Type: GrantFiled: August 20, 1999Date of Patent: September 10, 2002Assignee: Gunze LimitedInventors: Atsushi Okada, Shigenori Kiyama, Takeshi Yoshimi, Toshiyuki Okamoto, Masanori Yamamoto
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Patent number: 6413596Abstract: The present invention provides a heat shrinkable film comprising at least one layer of a thermoplastic resin and having a heat shrinkage in the main orientation direction of 10% or less after treatment in a hot water at 70° C. for 2 seconds, and 65% or more after treatment in hot water at 90° C. for 10 seconds, the heat shrinkable film preferably having a natural shrinkage in the main orientation direction of 2.5% or less after being allowed to stand at 40° C. for 7 days.Type: GrantFiled: September 29, 2000Date of Patent: July 2, 2002Assignee: Gunze LimitedInventors: Tomohisa Okuda, Yuji Hanaoka
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Patent number: 6361856Abstract: The invention provides an easily tearable film comprising a composition consisting of about 97-60% by weight of polyester and about 3-40% by weight of polyolefin as an essential component.Type: GrantFiled: March 6, 2000Date of Patent: March 26, 2002Assignees: Gunze Limited, Dai Nippon Printing Co., Ltd.Inventors: Mutsumi Wakai, Hiroyuki Furukawa, Kiyoshi Oguchi, Isao Inoue
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Patent number: 6352750Abstract: The present invention provides an seamless tubular electrically-semiconductive film excellent in heat resistance, chemical resistance and mechanical property with excellent electrical resistance properties being applied thereto. The seamless tubular electrically-semiconductive film comprises carbon black having a volatile content of 10-25% which consists mainly of volatile acidic ingredients having a pH of not more than 4. Combination of the polyimide having a Tg of 210-350° C. and a surface oxidation-treated carbon black is preferred since the combination enables to easily obtain the film wherein a surface resistivity/volume resistivity ratio is not more than two digits, and variation in the surface resistivity caused by an applied voltage for charging is nor more than half a digit. The film is produced, for example, by centrifugal casting. The film is remarkly advantageous as an intermediate transfer belt in a color copying machine.Type: GrantFiled: August 14, 2000Date of Patent: March 5, 2002Assignee: Gunze LimitedInventor: Junya Kanetake
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Patent number: 6353434Abstract: A control program designates two-dimensional coordinates in an image-displaying two-dimensional coordinate system and displays four mark images on a display screen. A touch panel obtains two-dimensional coordinates in a two-dimensional coordinate system inherent in the touch panel according to user operation corresponding to the four mark images. A touch-panel device driver obtains the coefficients in predetermined coordinate transformation expressions according to the two kinds of four coordinates, and performs coordinate transformation using the coordinate transformation expressions to convert two-dimensional coordinates in the touch-panel-inherent two-dimensional coordinate system that have been transmitted from the touch panel into two-dimensional coordinates in the image-displaying two-dimensional coordinate system and transfer the converted coordinates to an operating system.Type: GrantFiled: August 2, 1999Date of Patent: March 5, 2002Assignee: Gunze LimitedInventors: Kazuhiko Akebi, Shinya Nishihara, Minoru Okabe
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Patent number: 6350530Abstract: The present invention provides a card base which is degradable by microbes in natural environment. The card base is excellent in properties necessary for card bases, such as tensile strength, impact strength, flex temperature, heat resistance, resistance to thermal expansion and contraction, blocking resistance and humidity resistance, and has rigidity, bending resistance and durability. The card base contains, as essential components, a 3-hydroxybutylate/3-hydroxyvalerate copolymer and a lactic acid polymer, and, where necessary, a polycaprolactone or a high-molecular aliphatic polyester. The card base has a single-layer structure, or a sandwich structure further having overlay layers comprising a composition containing, as essential components, a lactic acid polymer and either or both of a polycaprolactone and a high-molecular alphatic polyester.Type: GrantFiled: September 25, 1998Date of Patent: February 26, 2002Assignee: Gunze LimitedInventors: Akira Morikawa, Mamoru Oishi, Yoshikiyo Saito
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Patent number: 6303054Abstract: The present invention provides an electrically-semiconductive poly(amic acid) liquid composition and a use thereof. An electrically-semiconductive poly(amic acid) (polyimide precursor) liquid composition whose electrical semiconductivity is applied by comprising an electrically-conductive carbon black. Change in an electrical resistivity of the liquid composition after being stored for 180 days at a temperature of 23° C. and in an atmosphere of a RH of 65% is 7% or less based on the electrical resistivity immediately after the preparation of the liquid composition. The electrically-semiconductive poly(amic acid) liquid composition is obtainable by mixing 5-40 parts by weight of a poly(amic acid), 95-60 parts by weight of an organic polar solvent and 10-40% by weight based on the poly(amic acid) of an electrically-conductive carbon black having a volatile content of 5-20%, a specific surface area of 100-300 m2/g and a pH of 2-4.Type: GrantFiled: August 14, 2000Date of Patent: October 16, 2001Assignee: Gunze LimitedInventors: Junya Kanetake, Tsutomu Yoshida, Naoki Nishiura, Tsuneo Miyamoto, Takashi Kuraoka
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Patent number: 6300128Abstract: A matrix for tissue culture comprising two kinds of sponges having at least one different physical property and/or at least one different chemical property; a method for culturing tissue using said matrix for tissue culture comprising inoculating and culturing first cell on a first sponge, laminating a second sponge thereon, and inoculating and culturing second cell on said second sponge; a method for fixing a cultured tissue comprising placing a cultured tissue in gelatin solution solated by elevating temperature, lowering temperature to gelatinize gelatin to fix the cultured tissue by said gelatinated gelatin; and an artificial skin fixed comprising dermis layer fixed by gelatin and epidermis layer laminated on the dermis layer.Type: GrantFiled: January 7, 2000Date of Patent: October 9, 2001Assignee: Gunze LimitedInventors: Katsuyasu Morota, Shinichiro Morita
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Patent number: 6282729Abstract: A waist protection member comprises a primary chamber (33) to be placed against at least an area of the human body surface in correspondence to a greater trochanter (1a) of a femur (1), and is fined with a gel-like substance (32). The waist protection member also comprises at least two auxiliary chambers (34) which are vertically juxtaposed to be placed against an area of the human body surface forwardly of the area covered with the primary chamber (33), and which are each filled with the gel-like substance (32) and have a smaller contact area with the human body than does the primary chamber.Type: GrantFiled: August 23, 1999Date of Patent: September 4, 2001Assignee: Gunze LimitedInventors: Katsuhiko Oikawa, Nanami Ozawa, Rika Kowatari
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Patent number: 6270866Abstract: The present invention provides a low temperature heat shrinkable film for labeling comprising at least one layer of a thermoplastic resin, in whose correlation diagram showing the relation between the heat shrinkage percentage Y at 80° C. in one direction and the heat shrinkage time t (1≦t≦5), the gradient Y′ is in an area between the gradients satisfying Equations 1 and 2 and the heat shrinkage percentage Y is in an area between the heat shrinkage percentages satisfying Equations 3 and 4: Y′=−1.05t2+12.05t (Equation 1) Y′=−0.30t2+2.90t (Equation 2) Y=−1.05t2+12.05t+40 (Equation 3) Y=−0.30t2+2.Type: GrantFiled: August 3, 1999Date of Patent: August 7, 2001Assignee: Gunze LimitedInventors: Tomohisa Okuda, Fusazo Wada, Hiroyuki Tanaka, Hiroki Kuriu