Patents by Inventor Mitsuhide Aihara
Mitsuhide Aihara 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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Patent number: 11655364Abstract: [Problem] To provide a thermoplastic resin film excellent in impact resistance, formability and trimmability when forming a container, productivity, and the like, and a thermoplastic resin-coated metal sheet. [Solution] A thermoplastic resin film contains 70 to 97 wt % of a thermoplastic polyester resin component and 3 to 30 wt % of a polyolefin resin component. The polyolefin resin component contains one or more polyolefin resins selected from the group consisting of nonpolar polyolefin resins and polyolefin resins having ester-containing functional groups in side chains thereof. The polyolefin resin component is dispersed, in the thermoplastic polyester resin component, in a fibrous form having an average length of 5 to 300 ?m in a machine direction of the film, an average length of 0.2 to 5 ?m in a thickness direction of the film, and an aspect ratio of 8 or greater.Type: GrantFiled: May 21, 2019Date of Patent: May 23, 2023Assignees: TOYO SEIKAN CO., LTD., TOYO KOHAN CO., LTD.Inventors: Tomoyasu Takenaga, Kazuhiro Nishida, Satoshi Kawamura, Kousuke Sasaki, Shuhei Hiromori, Kenji Yanada, Mitsuhide Aihara
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Publication number: 20210206529Abstract: A resin-coated steel can and method for producing the same. The resin-coated steel can is produced by drawing or draw-redrawing a resin-coated steel sheet at least having a surface serving as a can inner surface coated with a biaxially-stretched polyester film and a surface serving as a can outer surface that is coated and/or printed. The biaxially-stretched polyester film on the can inner surface side wall has a crystallinity in a range of 42 to 52%, and a shrinkage (shrinkage in the can height direction upon raising the temperature from 23° C. to 130° C. at a rate of 5° C./min.) of the biaxially-stretched polyester film on the can inner surface side wall is less than 10% of the can height.Type: ApplicationFiled: May 24, 2019Publication date: July 8, 2021Applicant: TOYO SEIKAN CO., LTD.Inventors: Kenji YANADA, Mitsuhide AIHARA
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Publication number: 20210189117Abstract: [Problem] To provide a thermoplastic resin film excellent in impact resistance, formability and trimmability when forming a container, productivity, and the like, and a thermoplastic resin-coated metal sheet. [Solution] A thermoplastic resin film contains 70 to 97 wt % of a thermoplastic polyester resin component and 3 to 30 wt % of a polyolefin resin component. The polyolefin resin component contains one or more polyolefin resins selected from the group consisting of nonpolar polyolefin resins and polyolefin resins having ester-containing functional groups in side chains thereof. The polyolefin resin component is dispersed, in the thermoplastic polyester resin component, in a fibrous form having an average length of 5 to 300 ?m in a machine direction of the film, an average length of 0.2 to 5 ?m in a thickness direction of the film, and an aspect ratio of 8 or greater.Type: ApplicationFiled: May 21, 2019Publication date: June 24, 2021Inventors: Tomoyasu TAKENAGA, Kazuhiro NISHIDA, Satoshi KAWAMURA, Kousuke SASAKI, Shuhei HIROMORI, Kenji YANADA, Mitsuhide AIHARA
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Patent number: 10934629Abstract: Provided is a surface-treated steel sheet with a compound layer containing F and composed essentially or Zr at least on one surface thereof, wherein the Zr amount is 80 to 350 mg/m2 and the F amount is 0.5 to 10 mg/m2 within the layer, and an organic resin coated metal container manufactured using the surface-treated steel sheet. The surface-treated steel sheet of the present invention is manufactured through forming a layer having the Zr amount of 80 to 350 mg/m2 at least on one surface of a steel sheet by cathode electrolytic treatment in an aqueous solution containing a Zr ion and F ion, and subsequently adjusting the surface to control the F amount to 0.5 to 10 mg/m2 by one or more treatments selected from immersion and spraying with an ion-containing aqueous solution and cathode electrolytic treatment in the ion-containing aqueous solution.Type: GrantFiled: August 16, 2017Date of Patent: March 2, 2021Assignee: TOYO KOHAN CO., LTD.Inventors: Kunihiro Yoshimura, Naomi Taguchi, Satoko Fukutomi, Wataru Kurokawa, Munemitsu Hirotsu, Mitsuhide Aihara, Satoshi Mikami
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Patent number: 10858751Abstract: A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m2 and the amount of F being not less than 12 mg/m2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.Type: GrantFiled: March 11, 2015Date of Patent: December 8, 2020Assignees: TOYO SEIKAN CO., LTD., TOYO KOHAN CO., LTD.Inventors: Mitsuhide Aihara, Wataru Kurokawa, Munemitsu Hirotsu, Kunihiro Yoshimura, Satoko Harada, Kousuke Sasaki, Masahiko Matsukawa, Miwa Uchikawa, Keisuke Yoshida
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Patent number: 10309028Abstract: Provided is a method for producing a surface-treated steel sheet including the step of forming a layer mainly composed of an oxygen compound containing Al onto a tin-plated steel sheet by conducting cathode electrolytic treatment to the tin-plated steel sheet using an electrolytic treatment solution containing Al ions and nitrate ions. For the electrolytic treatment solution, an electrolytic treatment solution not containing F ions and where the amount of nitrate ions contained is 11,500 to 25,000 ppm by weight is used.Type: GrantFiled: August 20, 2014Date of Patent: June 4, 2019Assignees: TOYO KOHAN CO., LTD., TOYO SEIKAN CO., LTD.Inventors: Kunihiro Yoshimura, Masanobu Matsubara, Marie Sasaki, Masahiko Matsukawa, Keisuke Yoshida, Wataru Kurokawa, Munemitsu Hirotsu, Mitsuhide Aihara
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Publication number: 20170342584Abstract: Provided is a surface-treated steel sheet with a compound layer containing F and composed essentially or Zr at least on one surface thereof, wherein the Zr amount is 80 to 350 mg/m2 and the F amount is 0.5 to 10 mg/m2 within the layer, and an organic resin coated metal container manufactured using the surface-treated steel sheet. The surface-treated steel sheet of the present invention is manufactured through forming a layer having the Zr amount of 80 to 350 mg/m2 at least on one surface of a steel sheet by cathode electrolytic treatment in an aqueous solution containing a Zr ion and F ion, and subsequently adjusting the surface to control the F amount to 0.5 to 10 mg/m2 by one or more treatments selected from immersion and spraying with an ion-containing aqueous solution and cathode electrolytic treatment in the ion-containing aqueous solution.Type: ApplicationFiled: August 16, 2017Publication date: November 30, 2017Inventors: Kunihiro YOSHIMURA, Naomi TAGUCHI, Satoko FUKUTOMI, Wataru KUROKAWA, Munemitsu HIROTSU, Mitsuhide AIHARA, Satoshi MIKAMI
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Publication number: 20170253985Abstract: A surface-treated steel sheet for cans forming a coating of a compound containing chiefly Zr and containing F, the amount of Zr being 80 to 200 mg/m2 and the amount of F being not less than 12 mg/m2 in the coating on the surface that becomes the outer surface side of the can. The surface-treated steel sheet is capable of effectively preventing the resin coating from peeling on the outer surface side of the can at dented portions.Type: ApplicationFiled: March 11, 2015Publication date: September 7, 2017Applicants: Toyo Seikan Co., Ltd., TOYO KOHAN CO., LTD.Inventors: Mitsuhide AIHARA, Wataru KUROKAWA, Munemitsu HIROTSU, Kunihiro YOSHIMURA, Satoko HARADA, Kousuke SASAKI, Masahiko MATSUKAWA, Miwa UCHIKAWA, Keisuke YOSHIDA
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Publication number: 20160289843Abstract: A surface-treated steel sheet and a process for its production. The surface-treated steel sheet has, on at least one surface of the steel sheet, a surface-treating layer that chiefly comprises zirconium and oxygen, and contains fluorine, the surface-treating layer containing an element of the Group II on the surface side thereof. The surface-treated steel sheet features excellent adhesion to the organic resin coating, excellent corrosion resistance, and can provide metal cans that feature excellent adhesion to the resin on the inner and outer surfaces of the cans and excellent resistance against the elution of fluorine.Type: ApplicationFiled: December 5, 2014Publication date: October 6, 2016Applicants: TOYO SEIKAN CO., LTD., TOYO KOHAN CO., LTD., NIPPON PAINT SURF CHEMICALS CO., LTD.Inventors: Wataru Kurokawa, Munemitsu Hirotsu, Mitsuhide Aihara, Masahiko Matsukawa, Miwa Uchikawa
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Publication number: 20160265134Abstract: Provided is a method for producing a surface-treated steel sheet including the step of forming a layer mainly composed of an oxygen compound containing Al onto a tin-plated steel sheet by conducting cathode electrolytic treatment to the tin-plated steel sheet using an electrolytic treatment solution containing Al ions and nitrate ions. For the electrolytic treatment solution, an electrolytic treatment solution not containing F ions and where the amount of nitrate ions contained is 11,500 to 25,000 ppm by weight is used.Type: ApplicationFiled: August 20, 2014Publication date: September 15, 2016Inventors: Kunihiro YOSHIMURA, Masanobu MATSUBARA, Marie SASAKI, Masahiko MATSUKAWA, Keisuke YOSHIDA, Wataru KUROKAWA, Munemitsu HIROTSU, Mitsuhide AIHARA
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Publication number: 20160230301Abstract: Provided is a surface-treated steel sheet with a compound layer containing F and composed essentially or Zr at least on one surface thereof, wherein the Zr amount is 80 to 350 mg/m2 and the F amount is 0.5 to 10 mg/m2 within the layer, and an organic resin coated metal container manufactured using the surface-treated steel sheet. The surface-treated steel sheet of the present invention is manufactured through forming a layer having the Zr amount of 80 to 350 mg/m2 at least on one surface of a steel sheet by cathode electrolytic treatment in an aqueous solution containing a Zr ion and F ion, and subsequently adjusting the surface to control the F amount to 0.5 to 10 mg/m2 by one or more treatments selected from immersion and spraying with an ion-containing aqueous solution and cathode electrolytic treatment in the ion-containing aqueous solution.Type: ApplicationFiled: August 4, 2014Publication date: August 11, 2016Applicants: Toyo Kohan Co., Ltd., Toyo Seikan Group Holdings, LtdInventors: Kunihiro YOSHIMURA, Naomi TAGUCHI, Satoko FUKUTOMI, Wataru KUROKAWA, Munemitsu HIROTSU, Mitsuhide AIHARA, Satoshi MIKAMI
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Patent number: 8551317Abstract: Disclosed are a method and an apparatus for forming an oxide coating film with excellent corrosion resistance and adhesiveness on a cathode made of a metal plate by a simple process at low cost. A direct current voltage is applied between an anode (12) and a cathode (13) in an electrolyte solution which cathode (13) is made of a metal plate to be coated with oxide and arranged opposite to the anode (12), while supplying oxygen or a gas containing oxygen into the electrolyte solution, so that the metal plate cathode (13) is coated with oxide, thereby being formed into a oxide-coated metal plate.Type: GrantFiled: November 9, 2004Date of Patent: October 8, 2013Assignees: Toyo Seikan Kaisha, Ltd., Toyo Kohan Co., Ltd.Inventors: Wataru Kurokawa, Hiroshi Matsubayashi, Mitsuhide Aihara, Masanobu Matsubara, Masatoki Ishida, Norimasa Maida
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Publication number: 20120222963Abstract: A surface-treated metal material having, formed on the surface of a metal base member, an inorganic surface-treating layer that contains inorganic components or, further having an organic surface-treating layer formed on the inorganic surface-treating layer, the inorganic surface-treating layer containing at least M (M is at least one of Ti, Zr and Al), O and F. The organic surface-treating layer contains a silane coupling agent containing Si in an amount of 0.8 to 30 mg/m2 or a phenol-type water-soluble organic compound.Type: ApplicationFiled: May 1, 2012Publication date: September 6, 2012Applicants: TOYO KOHAN CO., LTD., TOYO SEIKAN KAISHA, LTD.Inventors: Masatoshi ISHIDA, Norimasa MAIDA, Wataru KUROKAWA, Hiroshi MATSUBAYASHI, Mitsuhide AIHARA, Shigeya TAKAHASHI, Masanobu MATSUBARA
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Patent number: 7938950Abstract: A method of treating surfaces of a steel plate by forming an inorganic film on the surfaces of the steel plate by cathodic electrolytic treatment in an aqueous solution containing Zr and F and not containing phosphoric acid ions. Also disclosed is a method of treating surfaces of a steel plate by cathodic electrolytic treatment in aqueous solution containing Zr, F and P, and having a phosphoric acid ion concentration in a range of larger than 0 to smaller than 0.003 mols/liter calculated as PO4.Type: GrantFiled: May 21, 2010Date of Patent: May 10, 2011Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Wataru Kurokawa, Mitsuhide Aihara
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Publication number: 20100230288Abstract: A surface-treated metal material is obtained by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components but without containing phosphoric acid ions on the surfaces of a metal by the cathodic electrolysis or by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components and having an atomic ratio of P and Zr of 0?P/Zr<0.6 in the uppermost surface on the surfaces of the metal by the cathodic electrolysis at a low cost featuring high productivity, environmental friendliness, scar resistance, adhesion, workability and intimate fitting. By using a metal material obtained by coating the surface-treated metal material with an organic resin and, particularly, with a polyester resin, a metal can or a can lid exhibits excellent adhesion and corrosion resistance even at portions that are worked to a high degree. Further, the can lid exhibits excellent opening performance even after the sterilization by heating.Type: ApplicationFiled: May 21, 2010Publication date: September 16, 2010Applicant: TOYO SEIKAN KAISHA, LTD.Inventors: Wataru KUROKAWA, Mitsuhide AIHARA
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Patent number: 7749582Abstract: A surface-treated metal material is obtained by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components but without containing phosphoric acid ions on the surfaces of a metal by the cathodic electrolysis or by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components and having an atomic ratio of P and Zr of 0?P/Zr<0.6 in the uppermost surface on the surfaces of the metal by the cathodic electrolysis at a low cost featuring high productivity, environmental friendliness, scar resistance, adhesion, workability and intimate fitting. By using a metal material obtained by coating the surface-treated metal material with an organic resin and, particularly, with a polyester resin, a metal can or a can lid exhibits excellent adhesion and corrosion resistance even at portions that are worked to a high degree. Further, the can lid exhibits excellent opening performance even after the sterilization by heating.Type: GrantFiled: November 25, 2003Date of Patent: July 6, 2010Assignee: Toyo Seikan Kaisha, Ltd.Inventors: Wataru Kurokawa, Mitsuhide Aihara
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Publication number: 20090205965Abstract: Disclosed are a method and an apparatus for forming an oxide coating film with excellent corrosion resistance and adhesiveness on a cathode made of a metal plate by a simple process at low cost. A direct current voltage is applied between an anode (12) and a cathode (13) in an electrolyte solution which cathode (13) is made of a metal plate to be coated with oxide and arranged opposite to the anode (12), while supplying oxygen or a gas containing oxygen into the electrolyte solution, so that the metal plate cathode (13) is coated with oxide, thereby being formed into a oxide-coated metal plate.Type: ApplicationFiled: November 9, 2004Publication date: August 20, 2009Applicants: Toyo Seikan Kaisha, LTD., Toyo Kohan CO., LTD.Inventors: Wataru Kurokawa, Hiroshi Matsubayashi, Mitsuhide Aihara, Masanobu Matsubara, Masatoki Ishida, Norimasa Maida
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Publication number: 20080057336Abstract: A surface-treated metal material having, formed on the surface of a metal base member, an inorganic surface-treating layer that contains inorganic components or, further, having an organic surface-treating layer formed on the inorganic surface-treating layer, the inorganic surface-treating layer containing at least M (M is at least one of Ti, Zr or Al), O and F. The organic surface-treating layer comprises a silane coupling agent containing Si in an amount of 0.8 to 30 mg/m2 or a phenol-type water-soluble organic compound. The surface treatment without using chromium can be applied to various metal base members featuring excellent environmental friendliness, excellent resistance against discoloration even when applied to tin-plated steel plates, and offering excellent characteristics such as the close adhesion to the organic resin coating, adhesive property, corrosion resistance and dent resistance.Type: ApplicationFiled: June 22, 2004Publication date: March 6, 2008Applicants: TOYO SEIKAN KAISHA, LTD, TOYO KOHAN CO,, LTD.Inventors: Wataru Kurokawa, Hiroshi Matsubayashi, Mitsuhide Aihara, Shigeya Takahashi, Masanobu Matsubara, Masatoshi Ishida, Norimasa Maida
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Publication number: 20050175798Abstract: A surface-treated metal material is obtained by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components but without containing phosphoric acid ions on the surfaces of a metal by the cathodic electrolysis or by forming an inorganic surface-treating layer containing at least Zr, O and F as chief components and having an atomic ratio of P and Zr of 0?P/Zr<0.6 in the uppermost surface on the surfaces of the metal by the cathodic electrolysis at a low cost featuring high productivity, environmental friendliness, scar resistance, adhesion, workability and intimate fitting. By using a metal material obtained by coating the surface-treated metal material with an organic resin and, particularly, with a polyester resin, a metal can or a can lid exhibits excellent adhesion and corrosion resistance even at portions that are worked to a high degree. Further, the can lid exhibits excellent opening performance even after the sterilization by heating.Type: ApplicationFiled: November 25, 2003Publication date: August 11, 2005Inventors: Wataru Kurokawa, Mitsuhide Aihara