Patents by Inventor Ryousuke Wake

Ryousuke Wake 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: 5964113
    Abstract: A method of producing a resin-coated steel sheet for drawn-and-ironed cans. The resin-coated steel sheet has a steel sheet with a tin-coat on each side and a resin layer of a first crystalline thermoplastic polyester resin on one of the tin-coats and a second non-crystalline thermoplastic polyester resin on the first crystalline thermoplastic polyester resin. The first crystalline thermoplastic polyester resin has an alloying ratio of: 50.ltoreq.alloying ratio<100. The second non-crystalline thermoplastic polyester resin has an alloying ratio of 0<alloying ratio<50. The method includes thermal fusion of a mixture of 95-5 percent by weight of a crystalline polyester resin and 5-95 percent of a non-crystalline polyester resin to produce the first crystalline thermoplastic polyester resin and the second non-crystalline thermoplastic polyester resin.
    Type: Grant
    Filed: November 3, 1997
    Date of Patent: October 12, 1999
    Assignees: Nippon Steel Corporation, Mitsui Chemicals, Inc.
    Inventors: Ryousuke Wake, Ryoichi Yoshihara, Hiroji Niimi, Takashi Hiraoka
  • Patent number: 5714273
    Abstract: A resin-coated steel sheet for drawn-and-ironed cans and a method of producing the resin-coated steel sheet. The resin-coated steel sheet has a steel sheet with a tin-coat on each side and a resin layer of a first crystalline thermoplastic polyester resin on one of the tin-coats and a second non-crystalline thermoplastic polyester resin on the first crystalline thermoplastic polyester resin. The first crystalline thermoplastic polyester resin has an alloying ratio of: 50.ltoreq.alloying ratio <100. The second non-crystalline thermoplastic polyester resin has an alloying ratio of 0<alloying ratio <50. The method includes thermal fusion of a mixture of 95-5 percent by weight of a crystalline polyester resin and 5-95 percent of a non-crystalline polyester resin to produce the first crystalline thermoplastic polyester resin and the second non-crystalline thermoplastic polyester resin.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: February 3, 1998
    Assignees: Nippon Steel Corporation, Mitsui Petrochemical Industries, Inc.
    Inventors: Ryousuke Wake, Ryoichi Yoshihara, Hiroji Niimi, Takashi Hiraoka
  • Patent number: 5344550
    Abstract: A surface-treated steel sheet is provided, at a low cost, which has high weldability and is useful for a material of containers of foods and beverages. The surface treatment is conducted by applying flattened granular tin coating deposits having a specified diameter and high adhesion on a steel sheet surface at a specified plated area ratio, and applying thereon a metallic chromium coating and a chromium hydrate oxide coating.In the surface treatment, firstly, the surface of a steel sheet is subjected to tin-plating in an acidic tin plating bath containing a conventionally used brightener in an amount of from 0,001 to 0.05 g/l so as to form flattened granular tin coating deposits having a diameter of 0.4-2.4 .mu. at a plated area ratio of 5 to 30% and to improve the adhesion to the steel sheet and decrease falling-off of the granular tin coating deposits until completion of chrome-plating, thereby the variation of the amount of tin coating being decreased.
    Type: Grant
    Filed: June 8, 1993
    Date of Patent: September 6, 1994
    Assignee: Nippon Steel Corporation
    Inventors: Yoshihiro Kaneda, Ryoichi Yoshihara, Ryousuke Wake
  • Patent number: 5248405
    Abstract: A surface-treated steel sheet is provided, at a low cost, which has high weldability and is useful for a material of containers of foods and beverages. The surface treatment is conducted by applying flattened granular tin coating deposits having a specified diameter and high adhesion on a steel sheet surface at a specified plated area ratio, and applying thereon a metallic chromium coating and a chromium hydrate oxide coating.In the surface treatment, firstly, the surface of a steel sheet is subjected to tin-plating in an acidic tin plating bath containing a conventionally used brightener in an amount of from 0.001 to 0.05 g/1 so as to form flattened granular tin coating deposits having a diameter of 0.4-2.4 .mu. at a plated area ratio of 5 to 30% and to improve the adhesion to the steel sheet and decrease falling-off of the granular tin coating deposits until completion of chrome-plating, thereby the variation of the amount of tin coating being decreased.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: September 28, 1993
    Assignee: Nippon Steel Corporation
    Inventors: Yoshihiro Kaneda, Ryoichi Yoshihara, Ryousuke Wake
  • Patent number: 4999258
    Abstract: Surface treated steel sheets having excellent rust resistance and weldability, suitable for manufacturing various kinds of cans, produced by a process comprising applying 0.2 to 1 g/m.sup.2 of tin coating on a surface of a nickel coated cold rolled steel sheet, applying 0.01 to 0.3 g/m.sup.2 of zinc coating on the tin coating in such an amount that the ratio of the zinc coating amount to the tin coating amount is in a range from 2 to 30% by weight, and heating the coatings to alloy substantially all of the zinc into the tin coating layer with substantially no non-alloyed zinc left on the tin coating.
    Type: Grant
    Filed: May 19, 1988
    Date of Patent: March 12, 1991
    Assignee: Nippon Steel Corporation
    Inventors: Ryousuke Wake, Kazuya Ezure
  • Patent number: 4181580
    Abstract: A method for the electrolytic tinning of steel strip in an electrolytic bath wherein the steel strip is the cathode and insoluble anodes are used, the electrodes are immersed in an electrolyte solution containing tin ions and wherein the concentration of the tin ions in the bath is controlled by passing the solution exterior of the bath in contact with tin in particulate form, while simultaneously maintaining a high content of dissolved oxygen in the solution. This latter treatment replenishes the tin concentration of the solution and the thus replenished electrolytic solution can be returned to the bath in a manner so as to consistently maintain the tin ion concentration at the desired level.
    Type: Grant
    Filed: November 23, 1977
    Date of Patent: January 1, 1980
    Assignee: Nippon Steel Corporation
    Inventors: Minoru Kitayama, Takao Saito, Ryousuke Wake
  • Patent number: 3998670
    Abstract: A method for producing steel plate substrate for lacquering which comprises applying on the surface of the steel plate a treating solution containing 5 - 150 g/l of chromic acid, 5 - 200 g/l (as oxide) of metal oxide sol, 5 - 100 g/l of one or more selected from the group consisting of nitride, acetate, carbonate, and hydroxide of metal, borax, molybdate tungstate, and baking at a temperature of 400.degree. C or more.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: December 21, 1976
    Assignee: Nippon Steel Corporation
    Inventors: Akimi Umezono, Minoru Kitayama, Takao Saito, Ryousuke Wake