Patents by Inventor Senkichi Nakakoshi

Senkichi Nakakoshi 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).

  • Method for coating inner surfaces of metal tubes with powdery paint and apparatus therefor
    Patent number: 6019845
    Abstract: A method for coating an inner surface of a metal tube comprises supplying a hot-melt resin powdery paint floating in air together with an air stream into the metal tube which has been pre-heated and rotating around it's horizontal center axis. An apparatus used for the method comprises a rotating means for supporting and rotating the metal tube, fluidizing bed tank for floating the powdery paint in air, a paint supply pipe, an air pipe and a Y-shaped mixing pipe through which the powdery paint is supplied to the inside of the metal tube in the form of a jet. The inner surface of the metal tube can be coated uniformly in a very short period of time.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: February 1, 2000
    Inventor: Senkichi Nakakoshi
  • Heavy duty anticorrosion treatment of metal articles
    Patent number: 4774105
    Abstract: A process for heavy-duty anticorrosion treatment of a metal article is provided wherein the article, promptly after being hot plated, is coated with a synthetic resin thereby to bake the resin on the plated article with the heat remaining in the plated article.
    Type: Grant
    Filed: December 30, 1987
    Date of Patent: September 27, 1988
    Assignees: Terry Kogyo Kabushiki Kaisha, Nippon Telegraph and Telephone Corporation
    Inventors: Hisayoshi Takazawa, Ryoji Takekoshi, Yuzo Matsudaira, Yoshio Nakakoshi, Senkichi Nakakoshi
  • Polyester powdered paint
    Patent number: 4471109
    Abstract: A polyester polymer powdered paint comprising a thermoplastic polyethylene iso-terephthalate copolymer containing from 8 to 20 mol % of isophthalic acid component and having an intrinsic viscosity of from 0.7 to 1.0.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: September 11, 1984
    Inventors: Hideo Watase, Senkichi Nakakoshi