Patents by Inventor Kenji Shiga

Kenji Shiga 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).

  • Patent number: 10005901
    Abstract: Provided is a sealant for electrical and electronic parts having excellent fire resistance and adhesiveness, and provided are a method for manufacturing a sealant for electrical and electronic parts suitable therefor and a resin composition for sealing electrical and electronic parts. A resin composition for sealing electrical and electronic parts containing: a polyester (A) obtained by copolymerizing a polyalkylene glycol component and/or a polylactone component; an epoxy resin (B); a polyolefin resin (C); and a phosphoric acid ester (D).
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: June 26, 2018
    Assignee: TOYOBO CO., LTD.
    Inventors: Yosuke Watanabe, Kenji Shiga
  • Patent number: 9982126
    Abstract: Provided is a sealant for electrical and electronic parts having excellent fire resistance and adhesiveness, and provided are a method for manufacturing a sealant for electrical and electronic parts suitable therefor and a resin composition for sealing electrical and electronic parts. A resin composition for sealing electrical and electronic parts containing: a polyester (A) obtained by copolymerizing a polyalkylene glycol component and/or a polylactone component; an epoxy resin (B); a polyolefin resin (C); and a phosphoric acid ester (D).
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: May 29, 2018
    Assignee: TOYOBO CO., LTD.
    Inventors: Yosuke Watanabe, Kenji Shiga
  • Publication number: 20150322258
    Abstract: Provided is a sealant for electrical and electronic parts having excellent fire resistance and adhesiveness, and provided are a method for manufacturing a sealant for electrical and electronic parts suitable therefor and a resin composition for sealing electrical and electronic parts. A resin composition for sealing electrical and electronic parts containing: a polyester (A) obtained by copolymerizing a polyalkylene glycol component and/or a polylactone component; an epoxy resin (B); a polyolefin resin (C); and a phosphoric acid ester (D).
    Type: Application
    Filed: August 20, 2013
    Publication date: November 12, 2015
    Inventors: Yosuke WATANABE, Kenji SHIGA
  • Patent number: 9139729
    Abstract: It is provided that a resin composition for sealing electrical electronic components which is not susceptible to gelation even when stagnant under high temperature conditions, and which are excellent in initial bond strength to an aluminum material, and which exhibits superior durability under a cooling and heating cycle load and the like. It is also provided that a sealed electrical electronic component with the resin composition for sealing electrical electronic components. A resin composition for sealing electrical electronic components, containing a crystalline polyester-based elastomer (A), a phenol-modified xylene resin (B1) and/or a phenol resin (B2), and a polyolefin resin (C), and having a melt viscosity of 5 dPa·s or more and 3000 dPa·s or less when dried to a water content of 0.1% or less, heated to 220° C., subjected to a pressure of 1 MPa, and extruded through a die with a hole diameter of 1.0 mm and a thickness of 10 mm.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: September 22, 2015
    Assignee: TOYOBO CO., LTD.
    Inventors: Daiki Funaoka, Kenji Shiga
  • Patent number: 9080091
    Abstract: It is provided that a polyester composition for electrical/electronic part-sealing material having melt fluidity, initial peel strength, and initial dielectric breakdown strength that are required for electrical/electronic part-sealing material while also having excellent heat resistance, resistance to thermal aging, and durability with respect to hot-cold cycling. A polyester resin composition for electrical/electronic part-sealing material, comprising, as a main component, a copolymer polyester elastomer containing 50 weight % or more and 70 weight % or lower of an aliphatic polycarbonate segment and having 6 equivalents/106 g or more and 50 equivalents/106 g or lower of terminal vinyl groups.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: July 14, 2015
    Assignee: TOYOBO CO., LTD.
    Inventors: Junko Sakai, Kenji Shiga
  • Publication number: 20140329942
    Abstract: Provided is a flame-retardant resin composition which has excellent flame retardancy and less bleed out, while exhibiting high transparency that is close to the original state of a thermoplastic resin. This flame-retardant resin composition contains (A) a thermoplastic resin, (B) a copolymerized polyester resin wherein a phosphorus-containing component represented by general formula (1) is copolymerized, and (C) a phosphorus-containing compound represented by general formula (2). General formula (1); (In general formula (1), each of R1 and R2 independently represents a substituent such as an alkyl group having 1-4 carbon atoms; each of m and n independently represents an integer of 0-4; and B represents an ester-forming functional group.
    Type: Application
    Filed: June 24, 2012
    Publication date: November 6, 2014
    Applicant: TOYOBO CO., LTD.
    Inventors: Takashi Matsuo, Kenji Shiga
  • Publication number: 20140221578
    Abstract: It is provided that a resin composition for sealing electrical and electronic parts that can provide a flame-retardant sealed electrical and electronic part having no bleed out of a flame resistor while maintaining filling properties of a sealant in the practical level and adhesion between the sealant and an electrical and electronic part. A resin composition for sealing electrical and electronic parts, comprising a copolymer polyester elastomer (X), a brominated epoxy resin (B1), a non-brominated epoxy resin (B2) and a polyolefin resin (C), and having a melt viscosity of 5 dPa·s or more and 3.0×103 dPa·s or less when dried to a water content of 0.1% or less, heated to 220° C., subjected to a pressure of 1 MPa, and then extruded from a die having a hole diameter of 1.0 mm and a thickness of 10 mm, a sealed electrical and electronic part using the resin composition for sealing electrical and electronic part, and a method for producing the sealed electrical and electronic parts.
    Type: Application
    Filed: August 22, 2012
    Publication date: August 7, 2014
    Inventors: Daiki Funaoka, Kenji Shiga
  • Publication number: 20130338318
    Abstract: It is provided that a polyester composition for electrical/electronic part-sealing material having melt fluidity, initial peel strength, and initial dielectric breakdown strength that are required for electrical/electronic part-sealing material while also having excellent heat resistance, resistance to thermal aging, and durability with respect to hot-cold cycling. A polyester resin composition for electrical/electronic part-sealing material, comprising, as a main component, a copolymer polyester elastomer containing 50 weight % or more and 70 weight % or lower of an aliphatic polycarbonate segment and having 6 equivalents/106 g or more and 50 equivalents/106 g or lower of terminal vinyl groups.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 19, 2013
    Inventors: Junko Sakai, Kenji Shiga
  • Publication number: 20130331521
    Abstract: It is provided that a resin composition for sealing electrical electronic components which is not susceptible to gelation even when stagnant under high temperature conditions, and which are excellent in initial bond strength to an aluminum material, and which exhibits superior durability under a cooling and heating cycle load and the like. It is also provided that a sealed electrical electronic component with the resin composition for sealing electrical electronic components. A resin composition for sealing electrical electronic components, containing a crystalline polyester-based elastomer (A), a phenol-modified xylene resin (B1) and/or a phenol resin (B2), and a polyolefin resin (C), and having a melt viscosity of 5 dPa·s or more and 3000 dPa·s or less when dried to a water content of 0.1% or less, heated to 220° C., subjected to a pressure of 1 MPa, and extruded through a die with a hole diameter of 1.0 mm and a thickness of 10 mm.
    Type: Application
    Filed: February 21, 2012
    Publication date: December 12, 2013
    Inventors: Daiki Funaoka, Kenji Shiga
  • Patent number: 7989556
    Abstract: An object of the present invention is to provide a modifier which improves moldability in melt molding, particularly, injection molding, extrusion molding, profile molding, direct blow molding, or calendar processing molding using a polyester resin and, furthermore, which can improve mechanical physical property while maintaining transparency, and a polyester molded article using the modifier. The present invention relates to a modifier for a polyester resin, comprising an amorphous polyester resin (I), and a reactive compound (II) containing two or more glycidyl groups and/or isocyanate groups per one molecule and having a weight average molecular weight of not less than 200 and not more than 500 thousands.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: August 2, 2011
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kenji Shiga, Mitsuo Nishida
  • Publication number: 20090130417
    Abstract: A thin-walled light resin composition engine cover has reduced mass and thickness while retaining radiated sound reduction effects, heat resistance, and mechanical properties. The cover has an average thickness of 2.0 mm or less. The resin composition includes (a) a polyamide resin composed of essentially at least one of scrap of vehicle airbag fabric made of nylon 66 containing a copper-based stabilizer and vehicle airbag fabric recycled, (b) a modified polypropylene resin, (c) a reinforcement material, (d) a metal deactivator and a photo-thermal stabilizer, and (e) a viscosity regulator. The resin composition has a melt flow rate of not less than 40 g/10 min.
    Type: Application
    Filed: November 14, 2008
    Publication date: May 21, 2009
    Applicants: TOYODA GOSEI CO., LTD., TOYO BOSEKI KABUSHIKI KAISHA
    Inventors: Itsuro Maeda, Kenji Shiga, Yasuto Fujii, Satoshi Sakai
  • Publication number: 20070173629
    Abstract: An object of the present invention is to provide a modifier which improves moldability in melt molding, particularly, injection molding, extrusion molding, profile molding, direct blow molding, or calendar processing molding using a polyester resin and, furthermore, which can improve mechanical physical property while maintaining transparency, and a polyester molded article using the modifier. The present invention relates to a modifier for a polyester resin, comprising an amorphous polyester resin (I), and a reactive compound (II) containing two or more glycidyl groups and/or isocyanate groups per one molecule and having a weight average molecular weight of not less than 200 and not more than 500 thousands.
    Type: Application
    Filed: December 1, 2004
    Publication date: July 26, 2007
    Inventors: Kenji Shiga, Nishida Mitsuo
  • Publication number: 20060217495
    Abstract: A polyester resin composition for profile extrusion molding comprising an amorphous polyester, at least one component selected from the group consisting of a crystalline polyester and a nucleating agent, and optionally a reactive compound; a polyester resin composition for profile extrusion molding comprising a polyester resin, and a reactive compound having a weight average molecular weight of 200 to 500,000; and a profile shape comprising a resin having a reduced viscosity ratio of 1.01 to 3.00, a reduced viscosity ratio being a ratio of a reduced viscosity of a resin after molding to that of a resin before molding. They do not suffer from sagging in the molding process, they improve the shape accuracy at corners and edges of profile shapes from a die to a sizing step and also resistance to whitening on bending in transparent products, and can provide profile shapes having good solvent resistance and detergent resistance.
    Type: Application
    Filed: June 6, 2006
    Publication date: September 28, 2006
    Inventors: Kenji Shiga, Akira Nishimoto, Osamu Iritani, Kazunori Komatsu, Mitsuo Nishida
  • Patent number: 7084214
    Abstract: A polyester resin composition for profile extrusion molding comprising an amorphous polyester, at least one component selected from the group consisting of a crystalline polyester and a nucleating agent, and optionally a reactive compound; a polyester resin composition for profile extrusion molding comprising a polyester resin, and a reactive compound having a weight average molecular weight of 200 to 500,000; and a profile shape comprising a resin having a reduced viscosity ratio of 1.01 to 3.00, a reduced viscosity ratio being a ratio of a reduced viscosity of a resin after molding to that of a resin before molding. They do not suffer from sagging in the molding process, they improve the shape accuracy at corners and edges of profile shapes from a die to a sizing step and also resistance to whitening on bending in transparent products, and can provide profile shapes having good solvent resistance and detergent resistance.
    Type: Grant
    Filed: February 13, 2003
    Date of Patent: August 1, 2006
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Kenji Shiga, Akira Nishimoto, Osamu Iritani, Kazunori Komatsu, Mitsuo Nishida
  • Publication number: 20040010073
    Abstract: A polyester resin composition for profile extrusion molding comprising an amorphous polyester, at least one component selected from the group consisting of a crystalline polyester and a nucleating agent, and optionally a reactive compound; a polyester resin composition for profile extrusion molding comprising a polyester resin, and a reactive compound having a weight average molecular weight of 200 to 500,000; and a profile shape comprising a resin having a reduced viscosity ratio of 1.01 to 3.00, a reduced viscosity ratio being a ratio of a reduced viscosity of a resin after molding to that of a resin before molding. They do not suffer from sagging in the molding process, they improve the shape accuracy at corners and edges of profile shapes from a die to a sizing step and also resistance to whitening on bending in transparent products, and can provide profile shapes having good solvent resistance and detergent resistance.
    Type: Application
    Filed: February 13, 2003
    Publication date: January 15, 2004
    Inventors: Kenji Shiga, Akira Nishimoto, Osamu Iritani, Kazunori Komatsu, Mitsuo Nishida
  • Patent number: 4902473
    Abstract: A brake disc material which does not crack under a great braking action, such as in a large-sized truck, consisting of 0.03 percent to 1 percent of carbon, 1.2 percent to 20 percent of chromium, and 0.1 percent to 1 percent of molybdenum, the balance being essentially iron.
    Type: Grant
    Filed: November 16, 1987
    Date of Patent: February 20, 1990
    Assignee: Nippon Steel Corporation
    Inventors: Hiroto Arata, Kenji Shiga, Daihachiro Sakurai, Kazuo Fujisawa, Isao Souma, Yusiyo Watanabe, Akira Tanaka