Patents Assigned to Du Pont Toray Co., Ltd.
  • Patent number: 10946617
    Abstract: Provided is a graphite laminated body having excellent properties such as excellent mechanical properties, excellent heat resistance, and excellent thermal conductivity. In particular, provided is a graphite laminated body comprising a graphite film, a non-thermoplastic polyimide film, and an adhesive layer for bonding the graphite film to the non-thermoplastic polyimide film, the adhesive layer being made of a thermoplastic polyimide or a fluororesin.
    Type: Grant
    Filed: October 27, 2014
    Date of Patent: March 16, 2021
    Assignees: DU PONT-TORAY CO., LTD., PANASONIC CORPORATION
    Inventors: Naofumi Yasuda, Noriko Toida, Naomi Nishiki, Kazuhiro Nishikawa
  • Publication number: 20160279902
    Abstract: Provided is a graphite laminated body having excellent properties such as excellent mechanical properties, excellent heat resistance, and excellent thermal conductivity. In particular, provided is a graphite laminated body comprising a graphite film, a non-thermoplastic polyimide film, and an adhesive layer for bonding the graphite film to the non-thermoplastic polyimide film, the adhesive layer being made of a thermoplastic polyimide or a fluororesin.
    Type: Application
    Filed: October 27, 2014
    Publication date: September 29, 2016
    Applicants: DU PONT-TORAY CO., LTD., PANASONIC CORPORATION
    Inventors: Naofumi YASUDA, Noriko TOIDA, Naomi NISHIKI, Kazuhiro NISHIKAWA
  • Patent number: 7155893
    Abstract: The present invention relates to a method for producing a heat-resistant crimped yarn comprising: twisting yarn of a heat-resistant high functional fiber; twist-setting this twisted yarn by heat treatment; and untwisting this twist-set yarn, wherein a snarl value of the twist-set yarn is not more than 6.5.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: January 2, 2007
    Assignees: Du Pont-Toray Co., Ltd., Tokai Senko K.K.
    Inventors: Takeshi Hatano, Kazuhiko Kosuge, Mitsuhiko Tanahashi, Iori Nakabayashi, Taku Konaka, Takahiro Ito, Minoru Yamada
  • Publication number: 20050199755
    Abstract: Shreds for reinforcement allowing the effective recycling of waste fiber converted products as resources, a fiber-reinforced product using the shreds, and a method of manufacturing the shreds and the product, the method comprising the steps of performing the cleaning treatment on the fiber converted products, impregnating resin into the fiber converted products, drying the resin-, shredding the fiber converted products by using a shearing type shredding machine, dispersing the shreds in a matrix, and manufacturing a formed product from the composite material of the shreds and the matrix.
    Type: Application
    Filed: May 20, 2002
    Publication date: September 15, 2005
    Applicant: DU PONT-TORAY CO., LTD.
    Inventors: Atsushi Sumida, Koichi Tsukamoto
  • Patent number: 6889494
    Abstract: The invention provides heat-resistant crimped yarn, of which the constituent heat-resistant high-functional fibers are prevented as much as possible from being deteriorated under heat in the process of producing the yarn. Not losing excellent properties of heat resistance and flame retardancy intrinsic to the heat-resistant high-functional fibers, the crimped yarn has a good elongation percentage in stretch, a good stretch modulus of elasticity and a good appearance, and it fluffs little and releases little dust. The heat-resistant crimped yarn comprises heat-resistant high-functional fibers, and is characterized in that it does not deteriorate under heat, and that its elongation percentage in stretch is at least 6%, its stretch modulus of elasticity is at least 40%, and its tenacity falls between 0.15 and 3.5 N/tex.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: May 10, 2005
    Assignee: Du Pont-Toray Co., Ltd.
    Inventors: Mitsuhiko Tanahashi, Kazuhiko Kosuge, Takeshi Hatano, Iori Nakabayashi
  • Patent number: 6668535
    Abstract: The invention provides heat-resistant crimped yarn, of which the constituent heat-resistant high-functional fibers are prevented as much as possible from being deteriorated under heat in the process of producing the yarn. Not losing excellent properties of heat resistance and flame retardancy intrinsic to the heat-resistant high-functional fibers, the crimped yarn has a good elongation percentage in stretch, a good stretch modulus of elasticity and a good appearance, and it fluffs little and releases little dust. The heat-resistant crimped yarn comprises heat-resistant high-functional fibers, and is characterized in that it does not deteriorate under heat, and that its elongation percentage in stretch is at least 6%, its stretch modulus of elasticity is at least 40%, and its tenacity falls between 0.15 and 3.5 N/tex.
    Type: Grant
    Filed: October 3, 2001
    Date of Patent: December 30, 2003
    Assignee: Du Pont-Toray Co., Ltd.
    Inventors: Mitsuhiko Tanahashi, Kazuhiko Kosuge, Takeshi Hatano, Iori Nakabayashi
  • Patent number: 6652599
    Abstract: A treatment agent for elastic polyurethane fibers comprising a dispersion in which a higher fatty acid magnesium salt is colloidally dispersed in a silicone mixture consisting of a silicone oil with a viscosity of 5×10−6−50×10−6 m2/S at 25° C. as a dispersion medium and a dispersant mainly comprising a modified silicone at a ratio by weight of the dispersion medium/the dispersant=100/0.5-100/4.5, wherein the amount of the higher fatty acid magnesium salt is 1 to 10 parts by weight per 100 parts by weight of the silicone oil.
    Type: Grant
    Filed: August 15, 2000
    Date of Patent: November 25, 2003
    Assignees: Takemoto Oil & Fat Co., Ltd., Du Pont-Toray Co., Ltd.
    Inventors: Yoshinobu Inuzuka, Yasushi Miyamoto, Eiji Kawanishi, Noboru Watanabe
  • Publication number: 20030090773
    Abstract: A lighting reflection apparatus is provided, which improves controllability and sensitivity in changing or controlling an outgoing light characteristic. A reflector is composed of a substrate made of a film-like polyimide molded item shaped using only a difference between pressures applied from respective surfaces of a film-like item while subjecting the film-like item to plasticization with non-contact heating and having in itself a power of maintaining a three-dimensional shape independently or in the form of a single layer, and a reflection surface formed on an inner surface of the substrate. Then, outgoing light is changed or controlled by causing elastic deformation in the reflector by pressing the reflector with pressing means. Since the reflection surface of the reflector is formed by complete non-contact method, it is so smooth that sensitivity in controlling the outgoing light can be improved. Also, since the reflector made of an elastic film is deformed, satisfactory controllability can be attained.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 15, 2003
    Applicant: DU PONT-TORAY CO., LTD.
    Inventors: Toshihiro Tanno, Shigeo Shibata, Hideaki Machida
  • Patent number: 6171516
    Abstract: A treatment agent for elastic polyurethane fibers comprising a dispersion in which a higher fatty acid magnesium salt is colloidally dispersed in a silicone mixture consisting of a silicone oil with a viscosity of 5×10−6−50×10−6 m2/S at 25° C. as a dispersion medium and a dispersant mainly comprising a modified silicone at a ratio by weight of the dispersion medium/the dispersant=100/0.5−100/4.5, wherein the amount of the higher fatty acid magnesium salt is 1 to 10 parts by weight per 100 parts by weight of the silicone oil.
    Type: Grant
    Filed: November 6, 1998
    Date of Patent: January 9, 2001
    Assignees: Takemoto Oil & Fat Co., Ltd., Du Pont Toray Co., Ltd.
    Inventors: Yoshinobu Inuzuka, Yasushi Miyamoto, Eiji Kawanishi, Noboru Watanabe