Patents by Inventor Naoto Kidokoro

Naoto Kidokoro 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).

  • Laser-marking method and resin composition for laser-marking
    Patent number: 5063137
    Abstract: A resin composition for laser-marking which comprises at least one inorganic compound selected from the group consisting of anhydrous metal borate salt, an anhydrous metal phosphate salt, a phosphoric acid-containing glass, basic zinc carbonate and basic magnesium carbonate, and a resin; and a method for laser-marking the surface of an object composed of the said resin composition by applying laser beams onto the surface.
    Type: Grant
    Filed: November 9, 1989
    Date of Patent: November 5, 1991
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Toshiyuki Kiyonari, Satoshi Hirabayashi, Naoto Kidokoro, Futoshi Takimoto
  • Method and composition for laser-marking
    Patent number: 5035983
    Abstract: A laser-marking composition characterized by containing a non-black inorganic lead compound and a resin and a laser-marking method characterized by marking the surface of an object comprising said composition by exposure to laser beams having wavelengths falling in the far infrared regions.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: July 30, 1991
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Toshiyuki Kiyonari, Satoshi Hirabayashi, Naoto Kidokoro