Patents Assigned to Hi-Mirror Co., Ltd.
  • Glass flake having dense protective covering layer
    Patent number: 5436077
    Abstract: A glass flake comprising a flake of glass having formed on its surface a metal covering layer on which is formed a dense protective covering layer of a metal oxide. The glass flake is produced by maintaining a flake of glass in an alkaline solution containing metal alkoxide, water and an alcohol, followed by the separation and firing thereof.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: July 25, 1995
    Assignees: Nippon Glass Fiber Co., Ltd., Hi-Mirror Co., Ltd.
    Inventors: Teruo Matsuba, Yasuo Akano, Miwao Nishikawa