Patents by Inventor Yasushi Yamanaka
Yasushi Yamanaka 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).
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Publication number: 20220348762Abstract: To provide resin composition, a pellet and a powder for use in new powder additive manufacturing, as well as a shaped article using the same, and a method for manufacturing such shaped article. The resin composition comprises a polybutylene terephthalate that contains a terephthalic acid-derived structural unit and a 1,4-butanediol-derived structural unit, for use in powder additive manufacturing, the resin composition having a value (?), defined by mathematical formula [1] below, of 40 or smaller: ?=|(MVR1?MVR0)/MVR0|×100??[1] where, MVR0 is melt volume flow rate (in cm3/10 min), and MVR1 is melt volume flow rate (in cm3/10 min).Type: ApplicationFiled: January 30, 2020Publication date: November 3, 2022Applicants: MITSUBISHI ENGINEERING-PLASTICS CORPORATION, MITSUBISHI CHEMICAL CORPORATIONInventors: Hidekazu SHOUJI, Yasushi YAMANAKA, Minoru KISHISHITA, Masaki SUGIHARA
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Patent number: 11390037Abstract: Regarding a laser welded body in which a laser transmissive/absorptive molding member containing a PBT-based material and a laser absorptive molding member containing a PBT-based material are integrated with each other by laser welding, the following laser welded body is proposed as a laser welded body in which a bond strength can be further increased. A laser welded body having a structure in which a member I and a member II are integrally bonded to each other, the member I contains 0.0005 to 5.0 parts by mass, with respect to 100 parts by mass of a polyester-based resin A, of a laser transmissive/absorptive coloring material capable of transmitting and absorbing laser beam, and the polyester-based resin A contains at least a polybutylene terephthalate copolymer resin, the member II contains 0.15 to 10.Type: GrantFiled: October 30, 2018Date of Patent: July 19, 2022Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Akihiro Oka, Yuki Hiwatashi, Yasushi Yamanaka
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Patent number: 11291798Abstract: A vascular embolization device includes a coil with a primary shape and an stretch resistant wire provided inside the coil, in which the stretch resistant wire is a multilayer strand including at least one core layer and at least one outer layer including one or more resin compositions and a biochemical active material, and the core layer is composed of a material with a tensile break strength higher than that of the outer layer. The vascular embolization device has the function of administering a biochemical active material and also has good flexibility.Type: GrantFiled: March 3, 2016Date of Patent: April 5, 2022Assignee: KANEKA MEDIX CORPORATIONInventors: Hitoshi Ozasa, Atsushi Ogawa, Yasushi Yamanaka, Hiroo Iwata, Tomonobu Kodama
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Publication number: 20210340346Abstract: A metal film-coated molded resin article includes: a molded article formed of a polybutylene terephthalate-based resin composition and/or a polycarbonate-based resin composition; and a metal film disposed on a surface of the molded article, wherein the resin composition(s) contain(s) a reactive compound and/or a resin having a reactive functional group. A metal film-coated molded resin article includes: a molded article formed of a polybutylene terephthalate-based resin composition; and a metal film disposed on a surface of the molded article, wherein the peel strength of the metal film measured under the adhesion test described in appendix 1 (specifications) of JIS H8630:2006 is ?9.0 N/cm. A metal film-coated molded resin article may include a metal film excellent in adhesion, formed on the surface of the article such as a molded polybutylene terephthalate based-resin article and/or a molded polycarbonate-based resin article using a dry process instead of electroless plating.Type: ApplicationFiled: September 10, 2019Publication date: November 4, 2021Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Tetsuya SARUWATARI, Naoki YOSHIOKA, Yasushi YAMANAKA
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Publication number: 20210323194Abstract: A powder for powder bed fusion has a grain size distribution where D10 is not less than 20 ?m and not more than 42 ?m, D50 is not less than 42 ?m and not more than 70 ?m, and D90 is not more than 100 ?m, and includes polybutylene terephthalate having a melting peak half width in a DSC chart of not less than 1° C. and not more than 10° C. The powder for powder bed fusion benefits from excellent crushability and is prevented from the elongation of the particles or the softening of the resin even when the resin has been pulverized with a rotary blade or the like, and can form a uniformly thick powder layer without vacancies in a printing process and thus can be built up into a desired article with high accuracy.Type: ApplicationFiled: June 24, 2021Publication date: October 21, 2021Applicants: MITSUBISHI CHEMICAL CORPORATION, MITSUBISHI ENGINEERING-PLASTICS CORPORATIONInventors: Masaki SUGIHARA, Minoru KISHISHITA, Yasushi YAMANAKA
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Publication number: 20210292547Abstract: A polybutylene terephthalate resin composition, comprising comprising a thermoplastic resin (A) containing a polybutylene terephthalate resin and, per 100 parts by mass of the thermoplastic resin (A), from 0 to 30 parts by mass of an elastomer (B), from 0.3 to 4 parts by mass of an epoxy compound (C), from 15 to 80 parts by mass of a reinforcing filler (D), and from 1 to 15 parts by mass of a masterbatch (E) containing a silicone compound with a weight-average molecular weight of 10,000 to 80,000 and a thermoplastic resin.Type: ApplicationFiled: July 19, 2019Publication date: September 23, 2021Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Yasushi YAMANAKA, Hidekazu SHOJI, Rina TAKEUCHI
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Patent number: 11098190Abstract: Provided is a polybutylene terephthalate resin composition containing, with respect to 100 parts by mass of (A) a polybutylene terephthalate resin, (B) a total of 30 to 60 parts by mass of at least two different brominated flame retardants selected from the group consisting of a brominated epoxy compound, a brominated polycarbonate compound and a brominated polystyrene compound, (C) 5 to 15 parts by mass of an antimony compound, (D) 5 to 30 parts by mass of an elastomer, and (E) 0.5 to 3 parts by mass of a mold-release agent.Type: GrantFiled: May 17, 2017Date of Patent: August 24, 2021Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Souki Yoshida, Yasushi Yamanaka
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Publication number: 20210246302Abstract: Disclosed is a connector connection port formed by injection molding a polybutylene terephthalate resin material. A protruding boss part is provided on an outer or inner peripheral surface of the connector connection port. Voids are present in the boss part and a lower part of the outer or inner peripheral surface on which the boss part is provided. When a total of cross-sectional areas of voids in a region at a height of 0-0.5 mm from the outer or inner peripheral surface in the boss part is S1, a total of cross-sectional areas of voids in a region at a depth of 0-0.5 mm from the outer or inner peripheral surface on which the boss part is provided is S2, and a total of S1 and S2 is 100%, an areal ratio of S1 is 5% to 45% and an areal ratio of S2 is 55% to 95%.Type: ApplicationFiled: April 23, 2021Publication date: August 12, 2021Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Souki YOSHIDA, Yasushi YAMANAKA
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Patent number: 10836113Abstract: A laser welding member that has a high laser transmittance at a welding region and exhibits an excellent laser welding processability, and a molded article obtained by laser welding using this laser welding member. The laser welding member is obtained by injection molding of a thermoplastic polyester resin material, wherein a region to be laser welded in the member is at a location separated by a distance of at least 15 mm from a gate of an injection molding mold and has at least 30% of a light transmittance of laser light with a wavelength of 940 nm.Type: GrantFiled: January 18, 2016Date of Patent: November 17, 2020Assignee: Mitsubishi Engineering-Plastics CorporationInventor: Yasushi Yamanaka
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Publication number: 20200307112Abstract: Regarding a laser welded body in which a laser transmissive/absorptive molding member containing a PBT-based material and a laser absorptive molding member containing a PBT-based material are integrated with each other by laser welding, the following laser welded body is proposed as a laser welded body in which a bond strength can be further increased. A laser welded body having a structure in which a member I and a member II are integrally bonded to each other, the member I contains 0.0005 to 5.0 parts by mass, with respect to 100 parts by mass of a polyester-based resin A, of a laser transmissive/absorptive coloring material capable of transmitting and absorbing laser beam, and the polyester-based resin A contains at least a polybutylene terephthalate copolymer resin, the member II contains 0.15 to 10.Type: ApplicationFiled: October 30, 2018Publication date: October 1, 2020Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Akihiro OKA, Yuki HIWATASHI, Yasushi YAMANAKA
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Patent number: 10781308Abstract: A resin composition for laser welding contains: relative to 100 mass parts of (A) a thermoplastic polyester resin material that contains a polybutylene terephthalate homopolymer and at least one of a polybutylene terephthalate copolymer, a polyethylene terephthalate resin, and a polycarbonate resin, 0.0005 to 0.5 mass parts of (B) nigrosine; and 0.01 to 2 mass parts of (C) a colorant containing at least an anthraquinone dye C1 having a maximum absorption wavelength in a range of 590 to 635 nm, a perinone dye C2 having a maximum absorption wavelength in a range of 460 to 480 nm, and an anthraquinone dye C3 having a maximum absorption wavelength in a range of 435 to 455 nm, at C1:C2:C3=24 to 41:24 to 39:22 to 46 as the mass ratio relative to 100 mass parts for a total of C1, C2, and C3.Type: GrantFiled: February 24, 2017Date of Patent: September 22, 2020Assignees: Mitsubishi Engineering-Plastics Corporation, ORIENT CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasushi Yamanaka, Makiko Yoshida
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Patent number: 10626269Abstract: Provided are: a polyester resin composition that exhibits excellent flame retardancy and melt thermal stability and also exhibits excellent laser markability; and a method for producing same. The present invention provides: a polyester resin composition containing 3 to 60 parts by mass of a brominated polyacrylate flame retardant (B) relative to 100 parts by mass of a thermoplastic polyester resin (A), this brominated polyacrylate flame retardant (B) having a Na element concentration of 5 to 4000 ppm, as measured by X-Ray fluorescence analysis; and a production method including washing the brominated polyacrylate flame retardant (B) with hot water having a temperature of 40° C. to 100° C., then drying the washed product, and then mixing the dried product with the thermoplastic polyester resin (A).Type: GrantFiled: August 26, 2016Date of Patent: April 21, 2020Assignee: Mitsubishi Engineering-Plastics CorporationInventors: Yasushi Yamanaka, Masaya Yamashita, Kouichi Sakogawa, Osamu Takise
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Patent number: 10604649Abstract: Provided is a polyester resin composition for laser direct structuring, which exhibits high platability and excellent mechanical properties. This polyester resin composition for laser direct structuring is characterized by containing a laser direct structuring additive (C) at a quantity of 1 to 20 parts by mass relative to a total of 100 parts by mass of a thermoplastic polyester resin (A) and a thermoplastic resin (B) having a water absorption rate of 0.15 mass % or more, as measured using the ISO 62A method.Type: GrantFiled: August 9, 2016Date of Patent: March 31, 2020Assignee: Mitsubishi Engineering-Plastics CorporationInventor: Yasushi Yamanaka
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Patent number: 10472536Abstract: Making formation of a plated layer on a surface of a resin molded article possible, without adding the LDS additive to the thermoplastic resin composition. Provided is a composition for forming a laser direct structuring layer, the composition comprising a water-compatible organic substance, water, and a laser direct structuring additive. Further provided is a kit having the composition for forming a laser direct structuring layer and a method for manufacturing a resin molded article with a plated layer, which uses the composition for forming a laser direct structuring layer.Type: GrantFiled: June 26, 2015Date of Patent: November 12, 2019Assignee: MITSUBISHI ENGINEERING-PLASTICS CORPORATIONInventors: Masahide Sugiyama, Ryusuke Yamada, Tatsuya Kikuchi, Yasushi Yamanaka
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Publication number: 20190185659Abstract: Provided is a polybutylene terephthalate resin composition containing, with respect to 100 parts by mass of (A) a polybutylene terephthalate resin, (B) a total of 30 to 60 parts by mass of at least two different brominated flame retardants selected from the group consisting of a brominated epoxy compound, a brominated polycarbonate compound and a brominated polystyrene compound, (C) 5 to 15 parts by mass of an antimony compound, (D) 5 to 30 parts by mass of an elastomer, and (E) 0.5 to 3 parts by mass of a mold-release agent.Type: ApplicationFiled: May 17, 2017Publication date: June 20, 2019Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Souki YOSHIDA, Yasushi YAMANAKA
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Publication number: 20190016883Abstract: A resin composition for laser welding contains: relative to 100 mass parts of (A) a thermoplastic polyester resin material that contains a polybutylene terephthalate homopolymer and at least one of a polybutylene terephthalate copolymer, a polyethylene terephthalate resin, and a polycarbonate resin, 0.0005 to 0.5 mass parts of (B) nigrosine; and 0.01 to 2 mass parts of (C) a colorant containing at least an anthraquinone dye C1 having a maximum absorption wavelength in a range of 590 to 635 nm, a perinone dye C2 having a maximum absorption wavelength in a range of 460 to 480 nm, and an anthraquinone dye C3 having a maximum absorption wavelength in a range of 435 to 455 nm, at C1: C2:C3=24 to 41:24 to 39:22 to 46 as the mass ratio relative to 100 mass parts for a total of C1, C2, and C3.Type: ApplicationFiled: February 24, 2017Publication date: January 17, 2019Applicants: Mitsubishi Engineering-Plastic Corporation, ORIENT CHEMICAL INDUSTRIES CO., LTD.Inventors: Yasushi YAMANAKA, Makiko YOSHIDA
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Publication number: 20190010324Abstract: Provided is a polyester resin composition for laser direct structuring, which exhibits high platability and excellent mechanical properties. This polyester resin composition for laser direct structuring is characterized by containing a laser direct structuring additive (C) at a quantity of 1 to 20 parts by mass relative to a total of 100 parts by mass of a thermoplastic polyester resin (A) and a thermoplastic resin (B) having a water absorption rate of 0.15 mass % or more, as measured using the ISO 62A method.Type: ApplicationFiled: August 9, 2016Publication date: January 10, 2019Applicant: Mitsubishi Engineering-Plastics CorporationInventor: Yasushi YAMANAKA
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Publication number: 20190010325Abstract: Provided are: a polyester resin composition that exhibits excellent flame retardancy and melt thermal stability and also exhibits excellent laser markability; and a method for producing same. The present invention provides: a polyester resin composition containing 3 to 60 parts by mass of a brominated polyacrylate flame retardant (B) relative to 100 parts by mass of a thermoplastic polyester resin (A), this brominated polyacrylate flame retardant (B) having a Na element concentration of 5 to 4000 ppm, as measured by X-Ray fluorescence analysis; and a production method including washing the brominated polyacrylate flame retardant (B) with hot water having a temperature of 40° C. to 100° C., then drying the washed product, and then mixing the dried product with the thermoplastic polyester resin (A).Type: ApplicationFiled: August 26, 2016Publication date: January 10, 2019Applicant: Mitsubishi Engineering-Plastics CorporationInventors: Yasushi YAMANAKA, Masaya YAMASHITA, Kouichi SAKOGAWA, Osamu TAKISE
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Publication number: 20180363144Abstract: To form a plated layer on a surface of the resin molded article without adding the LDS additive to the thermoplastic resin composition. The laser direct structuring layer-forming composition contains a curable compound, an organic solvent, and a laser direct structuring additive.Type: ApplicationFiled: December 6, 2016Publication date: December 20, 2018Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATIONInventors: Masahide SUGIYAMA, Tatsuya KIKUCHI, Yasushi YAMANAKA
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Publication number: 20180264743Abstract: A laser welding member that has a high laser transmittance at a welding region and exhibits an excellent laser welding processability, and a molded article obtained by laser welding using this laser welding member. The laser welding member is obtained by injection molding of a thermoplastic polyester resin material, wherein a region to be laser welded in the member is at a location separated by a distance of at least 15 mm from a gate of an injection molding mold and has at least 30% of a light transmittance of laser light with a wavelength of 940 nm.Type: ApplicationFiled: January 18, 2016Publication date: September 20, 2018Applicant: Mitsubishi Engineering-Plastics CorporationInventor: Yasushi YAMANAKA