Patents by Inventor Tomihiko Yanagiguchi

Tomihiko Yanagiguchi 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: 20110290363
    Abstract: A fuel hose including a laminated article having: a layer including a thermoplastic polymer composition which includes a fluororesin (A) including a fluorine-containing ethylenic polymer (a) and a crosslinked fluororubber (B) including a fluororubber (b) that has been at least partially crosslinked. The fluorine-containing ethylenic polymer (a), the at least partially crosslinked fluororubber (b) and a weight ratio of the fluororesin (A) to the crosslinked fluororubber (B) are as defined herein. A fuel permeation coefficient and a tensile modulus of elasticity of a molded article including the thermoplastic polymer composition is not more than 20 g·mm/m2·day and is not more than 400 MPa. The fuel hose further includes a layer including at least one crosslinked rubber.
    Type: Application
    Filed: August 8, 2011
    Publication date: December 1, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomihiko YANAGIGUCHI, Toshiki ICHISAKA, Haruhisa MASUDA, Mitsuhiro OTANI
  • Publication number: 20110287202
    Abstract: The present invention provides a laminated article having improved adhesion of the fluorine-containing resin layer to the elastomer layer. The laminated article comprises a fluorine-containing resin layer (a) formed using a fluorine-containing resin having a carbonyl group, an olefin group or an amino group at an end of a polymer trunk chain or an end of a polymer side chain, and an elastomer layer (b) formed using an elastomer composition.
    Type: Application
    Filed: August 7, 2008
    Publication date: November 24, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Toshiki Ichisaka, Michiko Doi, Haruhisa Masuda, Katsuhide Ohtani, Tomihiko Yanagiguchi, Tsuyoshi Ono, Tomohiro Kino, Tadahiro Yabu
  • Publication number: 20110184126
    Abstract: There is provided a crosslinkable fluorine-containing rubber composition being capable of giving a fluorine-containing rubber crosslinked and molded article having a low friction coefficient and assuring an increased proportion of a fluorine-containing resin around the surface of a fluorine-containing rubber, a molded article obtained by crosslinking the composition, and a method for producing the molded article. The crosslinkable fluorine-containing rubber composition comprises a fluorine-containing rubber (A) comprising vinylidene fluoride unit, a fluorine-containing resin (B) and a polyol crosslinking agent (C), wherein the fluorine-containing rubber (A) and the fluorine-containing resin (B) are kneaded at a temperature of not less than a temperature being lower by 5° C. than the melting point of the fluorine-containing resin (B).
    Type: Application
    Filed: September 7, 2009
    Publication date: July 28, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Kohei Takemura, Tomihiko Yanagiguchi, Kazuyoshi Kawasaki
  • Publication number: 20110086983
    Abstract: The object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance, chemical resistance and oil resistance. Another object of the present invention is to provide a molded article, a laminated article, a hose for industrial use, a tube for industrial use, a fuel hose and a fuel tube comprising the thermoplastic polymer composition. Further object of the present invention is to provide a process for preparing a thermoplastic polymer composition.
    Type: Application
    Filed: December 10, 2010
    Publication date: April 14, 2011
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomihiko YANAGIGUCHI, Toshiki ICHISAKA, Haruhisa MASUDA, Mitsuhiro OTANI
  • Patent number: 7718247
    Abstract: A coating film (43) in which a plurality of fluoric resin particles (45) are dispersed in a matrix resin (44) is formed on the surface of a base material (41). Each exposed part (45a) of the fluoric resin particles (45) which is exposed at the surface of the coating film (43) is crushed to expand therearound to increase the area of the exposed part, increasing the amount of a fluorine element existing in a sliding face portion.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: May 18, 2010
    Assignee: Daikin Industries, Ltd.
    Inventors: Nobuaki Takeda, Tomihiko Yanagiguchi
  • Publication number: 20090226654
    Abstract: The object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance, chemical resistance and oil resistance. Another object of the present invention is to provide a molded article, a laminated article, a hose for industrial use, a tube for industrial use, a fuel hose and a fuel tube comprising the thermoplastic polymer composition. Further object of the present invention is to provide a process for preparing a thermoplastic polymer composition.
    Type: Application
    Filed: November 25, 2005
    Publication date: September 10, 2009
    Applicant: Daikin Industries, Ltd
    Inventors: Tomihiko Yanagiguchi, Toshiki Ichisaka, Haruhisa Masuda, Mitsuhiro Otani
  • Publication number: 20090202769
    Abstract: An object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance and chemical resistance. Further object of the present invention is to provide a molded article, a sealing material, peripheral parts of fuel system, a fuel hose and a fuel container comprising the thermoplastic polymer composition. The present invention relates to a thermoplastic polymer composition comprising a fluororesin (A) containing a fluorine-containing ethylenic polymer (a), a crosslinked fluororubber (B) in which at least a part of at least one kind of fluororubber (b) is crosslinked, and a fluorine-containing thermoplastic elastomer (C).
    Type: Application
    Filed: November 25, 2005
    Publication date: August 13, 2009
    Applicant: Daikan Industries, Ltd.
    Inventors: Haruhisa Masuda, Mitsuhiro Otani, Tomihiko Yanagiguchi, Toshiki Ichisaka
  • Patent number: 7563510
    Abstract: In a scroll compressor, a thrust ring is mounted between a movable-side flat plate part of a movable scroll and a housing. An upper surface of the thrust ring slides relative to a lower surface of the movable-side flat plate part and supports a thrust load from the movable scroll. A resinous coating is formed on the upper surface of the thrust ring which slides relative to the movable-side flat plate part. The resinous coating is composed primarily of fluorocarbon resin and polyamide-imide resin. The component percentage of the polyamide-imide resin in the primary component of the resinous coating is set, such that it is not less than 65% by mass nor more than 85% by mass.
    Type: Grant
    Filed: January 12, 2005
    Date of Patent: July 21, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Tomoko Nogawa, Keiji Yoshimura, Tomihiko Yanagiguchi, Takeyoshi Okawa
  • Patent number: 7528221
    Abstract: It is an object of the present invention to obtain a PTFE molding excellent in flexing resistance without decreasing the tensile strength and tensile elongation. The present invention is a modified polytetrafluoroethylene molded article obtained by molding a modified polytetrafluoroethylene molding powder, wherein the modified polytetrafluoroethylene molding powder is not melt-moldable, the modified polytetrafluoroethylene constituting the modified polytetrafluoroethylene molding powder contains 0.01 to 1% by mass of a perfluorovinyl ether unit represented by the formula (I): (wherein X is a perfluoroalkyl group containing 1 to 6 carbon atoms or a perfluoroalkoxyalkyl group containing 4 to 9 carbon atoms) and the heat of crystallization thereof is 18.0 to 25.0 J/g as measured using a differential scanning calorimeter, and the modified polytetrafluoroethylene molded article has a heat of fusion of not more than 28 J/g and a flex life of at least 200×104 cycles.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: May 5, 2009
    Assignee: Daikin Industries, Ltd.
    Inventors: Tomihiko Yanagiguchi, Shinichi Yano, Masamichi Sukegawa, Hirokazu Yukawa
  • Publication number: 20090011164
    Abstract: An object of the present invention is to provide a thermoplastic polymer composition which is flexible and capable of melt-molding and has excellent heat resistance, chemical resistance and oil resistance. The thermoplastic polymer composition comprises 10 to 95% by weight of a fluororesin (A) and 90 to 5% by weight of a crosslinked fluororubber (B), in which the fluororubber (A) comprises a fluorine-containing ethylenic polymer (a) having a melting point of 120° to 330° C. and the crosslinked fluororubber (B) is obtained by cross-linking dynamically at least one kind of fluororubber (b-1) or a fluorine-containing thermoplastic elastomer (b-2) in the presence of the fluororubber (A) and a crosslinking agent (C) under melting condition.
    Type: Application
    Filed: November 25, 2005
    Publication date: January 8, 2009
    Applicant: DAIKIN INDUSTRIES, LTD
    Inventors: Haruhisa Masuda, Mitsuhiro Otani, Tomihiko Yanagiguchi, Toshiki Ichisaka
  • Publication number: 20080125548
    Abstract: It is an object of the present invention to obtain a PTFE molding excellent in flexing resistance without decreasing the tensile strength and tensile elongation. The present invention is a modified polytetrafluoroethylene molded article obtained by molding a modified polytetrafluoroethylene molding powder, wherein the modified polytetrafluoroethylene molding powder is not melt-moldable, the modified polytetrafluoroethylene constituting the modified polytetrafluoroethylene molding powder contains 0.01 to 1% by mass of a perfluorovinyl ether unit represented by the formula (I): (wherein X is a perfluoroalkyl group containing 1 to 6 carbon atoms or a perfluoroalkoxyalkyl group containing 4 to 9 carbon atoms) and the heat of crystallization thereof is 18.0 to 25.0 J/g as measured using a differential scanning calorimeter, and the modified polytetrafluoroethylene molded article has a heat of fusion of not more than 28 J/g and a flex life of at least 200×104 cycles.
    Type: Application
    Filed: November 30, 2005
    Publication date: May 29, 2008
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomihiko Yanagiguchi, Shinichi Yano, Masamichi Sukegawa, Hirokazu Yukawa
  • Publication number: 20080032080
    Abstract: A thermoplastic, moldable, millable, extrudable composition of matter involving at least three polymeric components: a fluoroelastomer, an ETFE (ethylene/tetrafluoroethylene alternating copolymer, which may optionally contain one or more comonomers in minor amounts to alter crystallinity and melting temperature) fluoroplastic, and a block fluoropolymer containing at least one fluoroelastomer block and at least one ETFE block. The fluoroelastomer component and optionally the fluoroelastomer portion of the block fluoropolymer are crosslinked in a dynamic vulcanization process. Also disclosed are multilayer articles in which the aforesaid fluoro-TPV is adhered to an ETFE plastic layer.
    Type: Application
    Filed: March 1, 2007
    Publication date: February 7, 2008
    Applicant: DAIKIN AMERICA, INC.
    Inventors: Roger Faulkner, James Reilly, Haruhisa Masuda, Mitsuhiro Otani, Tomihiko Yanagiguchi, Toshiki Ichisaka
  • Publication number: 20070031275
    Abstract: In a scroll compressor, a thrust ring is mounted between a movable-side flat plate part of a movable scroll and a housing. An upper surface of the thrust ring slides relative to a lower surface of the movable-side flat plate part and supports a thrust load from the movable scroll. A resinous coating is formed on the upper surface of the thrust ring which slides relative to the movable-side flat plate part. The resinous coating is composed primarily of fluorocarbon resin and polyamide-imide resin. The component percentage of the polyamide-imide resin in the primary component of the resinous coating is set, such that it is not less than 65% by mass nor more than 85% by mass.
    Type: Application
    Filed: January 12, 2005
    Publication date: February 8, 2007
    Applicant: Daikin Industries, Ltd
    Inventors: Tomoko Nogawa, Keiji Yoshimura, Tomihiko Yanagiguchi, Takeyoshi Okawa
  • Publication number: 20060194021
    Abstract: A coating film (43) in which a plurality of fluoric resin particles (45) are dispersed in a matrix resin (44) is formed on the surface of a base material (41). Each exposed part (45a) of the fluoric resin particles (45) which is exposed at the surface of the coating film (43) is crushed to expand therearound to increase the area of the exposed part, increasing the amount of a fluorine element existing in a sliding face portion.
    Type: Application
    Filed: January 12, 2005
    Publication date: August 31, 2006
    Inventors: Nobuaki Takeda, Tomihiko Yanagiguchi
  • Patent number: 6930142
    Abstract: A seal ring with a sliding surface, which is obtained by molding a molding powder or granulated powder of non-melt-moldable modified polytetrafluoroethylene containing 0.01 to 1% by weight of a perfluorovinylether unit represented by the formula (I): —CF2—CF(—O—X)—??(I) wherein X represents a perfluoroalkyl group having 1 to 6 carbon atoms or a perfluoroalkoxyalkyl group having 2 to 9 carbon atoms, the modified polytetrafluoroethylene having a heat of crystallization of 18 to 25J/g measured by a differential scanning calorimeter.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: August 16, 2005
    Assignee: Daikin Industries, Ltd.
    Inventors: Tomihiko Yanagiguchi, Masamichi Sukegawa, Michio Asano
  • Publication number: 20040046144
    Abstract: The present invention relates to a seal ring comprising 40 to 94% by weight of polytetrafluoroethylene powder and 6 to 60% by weight of aromatic polyoxybenzoylester heat resistant resin powder or 40 to 94% by weight of polytetrafluoroethylene powder, 3 to 30% by weight of aromatic polyoxybenzoylester heat resistant resin powder and 3 to 30% by weight of molybdenum disulfide powder or 3 to 30% by weight of tungsten disulfide powder. The seal ring has little deformation by bulging of the seal even when used under pressure, can restrict the abrasion of a contacting material even when made of soft metal, providing a stable sealing effect over a long period. Furthermore, the seal ring is low in friction and change in sliding torque and therefore can significantly improve control and response of a device equipped with the seal ring.
    Type: Application
    Filed: June 27, 2003
    Publication date: March 11, 2004
    Inventors: Tomihiko Yanagiguchi, Masamichi Sukegawa, Michio Asano
  • Publication number: 20030122318
    Abstract: A seal ring which contains a scaly graphite powder essentially alone as a filler, and comprises 2 to 35% by weight of the graphite powder and 65 to 98% by weight of a polytetrafluoroethylene powder, wherein the graphite powder has an interplanar spacing of 0.335 to 0.340 nm, as measured by the powder X-ray diffraction method, and a size of a crystallite of (004) face of at least 70 nm is provided. Since deformation and extrusion of the seal ring are kept small even under a high pressure, and the abrasion of the opposite material can be prevented even if it is made of a soft metal, it is possible to maintain a stable sealing effect for a longer period of time. In addition, since the seal ring has small sliding resistance, handling property, response of the sealing device and suitability for fitting to the device can be largely improved. Thus, the seal ring is suitable for the valve device of power steering of automobiles, automatic transmission or shock absorber.
    Type: Application
    Filed: November 22, 2002
    Publication date: July 3, 2003
    Inventors: Tomihiko Yanagiguchi, Masamichi Sukegawa, Michio Asano
  • Publication number: 20030111798
    Abstract: There is provided a seal ring which is excellent since the seal ring has a high durability under sliding at high pressure during a long-term use, and a necessary suitability for fitting. The seal ring can provide an effect of sealing oil stably for a long period of time, and possesses properties suitable particularly for a seal ring of endless type.
    Type: Application
    Filed: September 23, 2002
    Publication date: June 19, 2003
    Inventors: Tomihiko Yanagiguchi, Masamichi Sukegawa, Michio Asano
  • Publication number: 20020158424
    Abstract: A seal ring comprising 40 to 94% by weight of a polytetrafluoroethylene powder, 3 to 30% by weight of a heat resistant aromatic polyoxybenzoyl ester resin powder and 3 to 30% by weight of a graphite powder. A stable sealing effect can be obtained for a long period of time since a deformation of the seal ring is small for the use even under a high pressure and an abrasion of an opposite material can be inhibited even if the opposite material is a soft metal. Further a frictional force is small, and a change in a sliding torque is small. Therefore the seal ring is suitable as a seal ring for a power steering where operability and response of the sealing device can be enhanced and also as a seal ring for an automatic transmission which slides at high revolutions and as a seal ring for a shock absorber which is required to have a sealing property under reciprocating sliding environment.
    Type: Application
    Filed: April 19, 2002
    Publication date: October 31, 2002
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Tomihiko Yanagiguchi, Masamichi Sukegawa, Michio Asano