Patents by Inventor Kuninori Takahashi
Kuninori Takahashi 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: 11511529Abstract: This decorative film is to be bonded to a resin molded body by means of thermoforming, and comprises a sealing layer (I) that contains a polypropylene resin (A) and a layer (II) that contains a polypropylene resin (B). The polypropylene resin (A) satisfies the requirement (a1), while the polypropylene resin (B) satisfies the requirement (b1). (a1) The melt flow rate (MFR (A)) (at 230° C. under a load of 2.16 kg) is more than 0.5 g/10 minutes. (b1) The melt flow rate (MFR (B)) (at 230° C. under a load of 2.16 kg) and the MFR (A) satisfy relational expression (b-1). MFR (B)<MFR (A) (b-1).Type: GrantFiled: August 2, 2017Date of Patent: November 29, 2022Assignee: Japan Polypropylene CorporationInventors: Satoshi Katsuno, Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi
-
Publication number: 20200384678Abstract: The present invention provides a decorative film including a layer containing at least one type of additive selected from a nucleating agent, a hindered-amine-based photostabilizer, and a UV-absorbing agent, satisfying the condition below, the decorative film being for affixing, by thermoforming, onto a resin molded article having a three-dimensional shape. Condition: The amount of variation in the haze value measured by a method conforming to JIS-K7136 in a glass plate that has been subjected to the fogging test below, which conforms to ISO 6452, is 40 or less. <Fogging test>: 1 g (±0.01 g) of the additive was placed in a sample bottle made of glass, the sample bottle was closed using a glass plate, and clouding (fogging) was produced on the glass plate by heating the sample bottle for 1 hour at 150° C.Type: ApplicationFiled: November 19, 2018Publication date: December 10, 2020Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Morikazu NIIBE, Satoshi KATSUNO, Kazuo ASUKA, Hayato KITAURA, Kuninori TAKAHASHI
-
Patent number: 10464251Abstract: The present invention provides a thermal molding sheet having a thickness of 1 mm or more and formed by a polypropylene resin composition comprising: 5 to 97 wt % of a polypropylene resin (A) whose MFR and melt tension satisfy specific conditions and which has a long-chain branch structure; 1 to 93 wt % of a polypropylene resin (B) whose MFR satisfies specific conditions; 1 to 40 wt % of a thermoplastic elastomer (C); and 1 to 40 wt % of a filler (D).Type: GrantFiled: October 6, 2016Date of Patent: November 5, 2019Assignee: Japan Polypropylene CorporationInventors: Kazuo Asuka, Hayato Kitaura, Morikazu Niibe, Kuninori Takahashi
-
Publication number: 20190232627Abstract: This decorative film is to be bonded to a resin molded body by means of thermoforming, and comprises a sealing layer (I) that contains a polypropylene resin (A) and a layer (II) that contains a polypropylene resin (B). The polypropylene resin (A) satisfies the requirement (a1), while the polypropylene resin (B) satisfies the requirement (b1). (a1) The melt flow rate (MFR (A)) (at 230° C. under a load of 2.16 kg) is more than 0.5 g/10 minutes. (b1) The melt flow rate (MFR (B)) (at 230° C. under a load of 2.16 kg) and the MFR (A) satisfy relational expression (b-1). MFR (B)<MFR (A) (b-1).Type: ApplicationFiled: August 2, 2017Publication date: August 1, 2019Applicant: Japan Polypropylene CorporationInventors: Satoshi KATSUNO, Kazuo ASUKA, Hayato KITAURA, Morikazu NIIBE, Kuninori TAKAHASHI
-
Publication number: 20190184625Abstract: Disclosed herein is a polypropylene-based decorative film to be used for three-dimensional decorative thermoforming, which film is capable of achieving both of sufficient adhesive strength and product appearance and is easy to recycle. A decorative film of the present disclosure contains a layer (II) including a resin composition (B) containing a polypropylene-based resin (B), in which the resin composition (B) satisfies the following requirements (b1) and (b2):(b1) the melt flow rate (MFR)(B) (230° C., a load of 2.16 kg) is 40 g/10 minutes or less, and (b2) the strain hardening degree ? is 1.Type: ApplicationFiled: August 9, 2017Publication date: June 20, 2019Applicant: Japan Polypropylene CorporationInventors: Satoshi KATSUNO, Kazuo ASUKA, Hayato KITAURA, Morikazu NIIBE, Kuninori TAKAHASHI
-
Publication number: 20180304520Abstract: The present invention provides a thermal molding sheet having a thickness of 1 mm or more and formed by a polypropylene resin composition comprising: 5 to 97 wt % of a polypropylene resin (A) whose MFR and melt tension satisfy specific conditions and which has a long-chain branch structure; 1 to 93 wt % of a polypropylene resin (B) whose MFR satisfies specific conditions; 1 to 40 wt % of a thermoplastic elastomer (C); and 1 to 40 wt % of a filler (D).Type: ApplicationFiled: October 6, 2016Publication date: October 25, 2018Applicant: Japan Polypropylene CorporationInventors: Kazuo ASUKA, Hayato KITAURA, Morikazu NIIBE, Kuninori TAKAHASHI
-
Patent number: 9505894Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced and includes (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.Type: GrantFiled: February 22, 2013Date of Patent: November 29, 2016Assignee: JAPAN POLYPROPYLENE CORPORATIONInventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
-
Patent number: 9328232Abstract: A propylene-ethylene copolymer resin composition including: 97 to 65 parts by weight of a propylene polymer (A) produced with a metallocene catalyst and 3 to 35 parts by weight of a propylene-ethylene copolymer (B). The copolymer (B) includes: 65 to 95% by weight of a propylene polymer component (B1) and 5 to 35% by weight of a propylene-ethylene copolymer component (B2).Type: GrantFiled: February 22, 2013Date of Patent: May 3, 2016Assignee: JAPAN POLYPROPYLENE CORPORATIONInventors: Satoshi Katsuno, Kuninori Takahashi, Iku Kouzai, Motokazu Terada, Masato Takayama, Shinichirou Yajima
-
Patent number: 9284427Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer.Type: GrantFiled: February 22, 2013Date of Patent: March 15, 2016Assignee: Japan Polypropylene CorporationInventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
-
Publication number: 20150322250Abstract: A propylene-ethylene copolymer resin composition including: 97 to 65 parts by weight of a propylene polymer (A) produced with a metallocene catalyst and 3 to 35 parts by weight of a propylene-ethylene copolymer (B). The copolymer (B) includes: 65 to 95% by weight of a propylene polymer component (B1) and 5 to 35% by weight of a propylene-ethylene copolymer component (B2).Type: ApplicationFiled: February 22, 2013Publication date: November 12, 2015Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Satoshi KATSUNO, Kuninori TAKAHASHI, Iku KOUZAI, Motokazu TERADA, Masato TAKAYAMA, Shinichirou YAJIMA
-
Publication number: 20150010747Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.Type: ApplicationFiled: February 22, 2013Publication date: January 8, 2015Applicant: Japan Polypropylene CorporationInventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
-
Publication number: 20150004394Abstract: Provided is a polypropylene-based resin composition which gives uniform and fine cells and from which a foamed sheet and thermoform excellent in appearance, thermoformability, impact resistance, lightness, stiffness, heat resistance, heat insulating properties, oil resistance and the like can be produced. A polypropylene-based resin composition comprising (X) 5 to 99% by weight of a polypropylene resin having a structure with long chain branches, and (Y) 1 to 95% by weight of a propylene-based block copolymer produced by sequential polymerization, which block copolymer comprises (Y-1) a propylene (co)polymer and (Y-2) a propylene-ethylene copolymer, said resin (X) having properties (X-i) to (X-iv) and said block copolymer (Y) having properties (Y-i) to (Y-v), and the like.Type: ApplicationFiled: February 22, 2013Publication date: January 1, 2015Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Sachio Hotta, Kazuo Asuka, Shinichi Kitade, Kuninori Takahashi, Iku Kouzai, Takao Tayano
-
Patent number: 7915359Abstract: A propylene resin composition which is a three-component material is improved in rigidity, heat resistance, and impact resistance while maintaining a satisfactory balance among these and further improved in low-temperature (about ?30° C.) impact resistance. A propylene resin composition as described in the specification.Type: GrantFiled: September 22, 2006Date of Patent: March 29, 2011Assignee: Japan Polypropylene CorporationInventors: Shinichi Kitade, Hideshi Uchino, Jun Shinozaki, Kuninori Takahashi, Kenji Masuda
-
Patent number: 7662888Abstract: A polypropylene based heat shrinkable film obtained by using a propylene-ethylene block copolymer (A) which satisfies the following requirements (A-i) to (A-iv), and having heat shrinkability imparted by orientation in at least one direction: (A-i) it is a propylene-ethylene block copolymer obtained through sequential polymerization catalyzed by a metallocene catalyst which is composed of 30 to 95 wt % of a propylene homopolymer or propylene-ethylene random copolymer component (A1) having an ethylene content of at most 7 wt % produced in a first step and 70 to 5 wt % of a propylene-ethylene random copolymer component (A2) produced in a second step having an ethylene content higher by 3 to 20 wt % than that of the component (A1); (A-ii) it has a melt flow rate (MFR: 2.16 kg, 230° C.) within a range of 0.1 to 30 g/10 min; (A-iii) a temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA) has a single peak at a temperature of at most 0° C.Type: GrantFiled: April 25, 2006Date of Patent: February 16, 2010Assignee: Japan Polypropylene CorporationInventors: Gen Kanai, Kuninori Takahashi, Shinichi Kitade, Iku Kouzai
-
Publication number: 20090118414Abstract: A propylene resin composition which is a three-component material is improved in rigidity, heat resistance, and impact resistance while maintaining a satisfactory balance among these and further improved in low-temperature (about ?30° C.) impact resistance. A propylene resin composition comprising: 60-95 wt % of a crystalline propylene polymer ingredient (a) comprising a propylene homopolymer ingredient or a copolymer of propylene and up to 3 wt % ethylene or an ?-olefin having 4-20 carbon atoms; and 40-5 wt % of a propylene/ethylene copolymer ingredient (b), wherein the ingredients are polymerized using a metallocene catalyst, and the composition satisfies the following properties i) to iv): i) A melting point obtained by differential scanning calorimetry (DSC) is 156° C. or higher, ii) A proportion of the copolymer ingredient (b) determined by a temperature rising elution fractionation (TREF) fractionating at three levels of temperature of 40° C., 100° C., and 140° C.Type: ApplicationFiled: September 22, 2006Publication date: May 7, 2009Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Shinichi Kitade, Hideshi Uchino, Jun Shinozaki, Kuninori Takahashi, Kenji Masuda
-
Patent number: 7390575Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA).Type: GrantFiled: October 18, 2004Date of Patent: June 24, 2008Assignee: Japan Polypropylene CorporationInventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama
-
Publication number: 20060246308Abstract: A polypropylene based heat shrinkable film obtained by using a propylene-ethylene block copolymer (A) which satisfies the following requirements (A-i) to (A-iv), and having heat shrinkability imparted by orientation in at least one direction: (A-i) it is a propylene-ethylene block copolymer obtained through sequential polymerization catalyzed by a metallocene catalyst which is composed of 30 to 95 wt % of a propylene homopolymer or propylene-ethylene random copolymer component (A1) having an ethylene content of at most 7 wt % produced in a first step and 70 to 5 wt % of a propylene-ethylene random copolymer component (A2) produced in a second step having an ethylene content higher by 3 to 20 wt % than that of the component (A1); (A-ii) it has a melt flow rate (MFR: 2.16 kg, 230° C.) within a range of 0.1 to 30 g/10 min; (A-iii) a temperature-loss tangent (tan ?) curve obtained by dynamic mechanical analysis (DMA) has a single peak at a temperature of at most 0° C.Type: ApplicationFiled: April 25, 2006Publication date: November 2, 2006Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Gen Kanai, Kuninori Takahashi, Shinichi Kitade, Iku Kouzai
-
Publication number: 20050113517Abstract: A polyolefin based biaxially oriented multi-layer film having at least one surface layer comprise of the propylene-ethylene random block copolymer; The propylene-ethylene random block copolymer obtained through sequential polymerization catalyzed by a metallocene component which is composed of 30 to 70 wt % of a propylene-ethylene random copolymer component having an ethylene content of 1 to 7 wt % produced in the first step of the polymerization and from 70 to 30 wt % of a low crystallinity or an amorphous propylene-ethylene random copolymer component produced in the second step of the polymerization having an ethylene content of 6 to 15 wt % higher than that of the polymer component obtained in the first step, wherein that shows a single peak at 0° C. or lower in the temperature-loss tangent (tan?) curve obtained by dynamic mechanical analysis (DMA).Type: ApplicationFiled: October 18, 2004Publication date: May 26, 2005Applicant: JAPAN POLYPROPYLENE CORPORATIONInventors: Takao Tayano, Kuninori Takahashi, Iku Kouzai, Shinichi Kitade, Shigeo Mizukami, Koichi Hirayama
-
Patent number: 6632911Abstract: An ethylene/&agr;-olefin copolymer having a density of 0.900 to 0.965 g/cm3; having an MI of 0.01 to 100 g/10 minutes; in a chromatogram with the use of Rayleigh ratio obtained by extrapolating GPC-MALLS data at a scattering angle of 0°, showing an average {overscore (Mc)} obtained by measuring five times of 0.5% or more and a standard deviation <&sgr;> from the average of 35% or less, wherein Mc stands for the chromatographic area ratio of the components having molecular weight of 1,000,000 or more calculated on the basis of the above measurement; and having a W30 (weight fraction of the portion eluted below 30° C.) in CFC measurement of 1 (% by weight) or less; and a film thereof.Type: GrantFiled: November 3, 2000Date of Patent: October 14, 2003Assignee: Japan Polychem CorporationInventors: Kuninori Takahashi, Yoshiyuki Ishihama, Etsushi Akashige, Fumiyo Ikehata, Hisao Uchida, Mikio Kawase
-
Patent number: 5109432Abstract: A character recognition method includes steps of comparing input image data with character patterns of a predetermined dictionary and recognizing a character indicated by the input image data without requiring any special hardware in a conventional character recognition apparatus. Namely, the input image data is processed by using an unwanted-dot elimination mask and processed by using a positive mask and negative mask of each of the character patterns in the dictionary, and then a discrepancy ratio of each of the character patterns is calculated. Consequently, highly accurate character recognition can be carried out at a low cost without using special hardware, by decreasing the negative infludence of a flaw, a missing portion, dust, and the like.Type: GrantFiled: December 27, 1989Date of Patent: April 28, 1992Assignees: Fujitsu Limited, Fujitsu Tohoku Electronics, Honda Electron Co., Ltd.Inventors: Hitoshi Hori, Akihiro Endo, Kuninori Takahashi, Juro Inomata