Patents Assigned to Orient Watch Co.
  • Patent number: 5752395
    Abstract: A golden ornament having formed on a substrate either golden coating incorporating gold, iron, and oxygen therein or a golden coating comprising gold, iron, and oxygen; a golden ornament having formed on a substrate an undercoating layer comprising a Ti compound or a Zr compound and further formed on the undercoating layer a golden coating comprising gold, iron, and oxygen; the golden coating having the magnitudes of color tones, L*, a*, and b*, in the respective ranges, 90.gtoreq.L*.gtoreq.75, 10.gtoreq.a*.gtoreq.0, and 40.gtoreq.b*.gtoreq.20; and a method for the production of the golden ornament characterized by having the golden coating formed by the physical vapor deposition of gold and iron on the substrate or the undercoating layer in an ambient air containing oxygen.
    Type: Grant
    Filed: February 14, 1996
    Date of Patent: May 19, 1998
    Assignee: Orient Watch Co.
    Inventor: Yutaka Nakamura