Patents by Inventor Tatsuro Obi

Tatsuro Obi 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).

  • Coated metal sheet for use in producing a drawn and ironed can body
    Patent number: 4177323
    Abstract: A coated metal sheet adapted for use in producing a drawn and ironed can body. This sheet is coated with a coating composition film completely cured on it, the coating composition consisting of epoxy-phenolic resin prepared by condensing thermosetting type phenol resin with bisphenol epoxy resin-A and olefin type hydrocarbon added thereto in an amount of 0.5 to 2.0 weight percent. This coated metal sheet has excellent drawing and ironing formability and the coating film thereof shows excellent adhesion and coating integrity.
    Type: Grant
    Filed: December 27, 1978
    Date of Patent: December 4, 1979
    Assignees: Nippon Steel Corporation, Sakuranomiya Chemical Co., Ltd.
    Inventors: Tatsuro Obi, Teruo Koyama, Tadashi Tanaka, Atsushi Hasegawa
  • Steel sheet for DrD cans and DI cans
    Patent number: 4160056
    Abstract: A steel sheet for production of DrD or DI cans, comprising a cold rolled steel sheet, a solvent type thermosetting paint coating containing ethylene-vinyl acetate copolymer baked on the steel sheet in a completely cured state.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: July 3, 1979
    Assignee: Nippon Steel Corporation
    Inventors: Tadashi Tanaka, Tatsuro Obi, Nobuichi Arai, Teruo Koyama
  • Surface treatment of a tin-plate
    Patent number: 4104419
    Abstract: A method for surface treatment of an electrolytic tin plate, comprising treating a tin-plated steel sheet with an aqueous solution containing at least one selected from the group consisting of pyrazole derivatives and colloidal substances, drying and reflowing the tin-plated steel sheet.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: August 1, 1978
    Assignee: Nippon Steel Corporation
    Inventors: Keiichi Tanikawa, Tatsuro Obi, Tadashi Tanaka, Susumu Otsuka, Takao Saito
  • Coated metallic sheet for use in making a container
    Patent number: 3932144
    Abstract: A coated metallic sheet adapted for use in making a can for foodstuff or other container. This sheet can be made by coating, upon a material sheet, a composition of a resol-type thermosetting phenolformaldehyde resin and a bisphenol "A" type epoxy resin. In said phenol-formaldehyde resin, the ratio by weight of orthocresol to phenol is between 60:40 and 10:90. Said epoxy resin has a mean molecular weight of 800 or more and is used in an amount of 0.2 to 1.5 part by weight per 1 part by weight of said phenol-formaldehyde resin in said composition. This composition used for the sheet displays an excellent adhesiveness particularly with respective to the use of a polyamide type adhesive.
    Type: Grant
    Filed: December 4, 1974
    Date of Patent: January 13, 1976
    Assignees: Nippon Steel Corporation, Toagosei Chemical Industry Co., Ltd.
    Inventors: Takashi Matsubara, Yuko Takeuchi, Tadashi Tanaka, Tatsuro Obi, Akio Watanabe