Patents by Inventor Mika Fukuya

Mika Fukuya 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 of preparing hard disc including treatment with amine-containing zincate solution
    Patent number: 6162343
    Abstract: A method of preparing a hard disc comprising steps of:immersing an aluminum or aluminum alloy substrate in a zincate solution containing a zinc compound, an alkali hydroxide, and at least one amine to thereby form a zincate film on the surface of the substrate,immersing the zincate film-formed substrate in an electroless nickel plating solution comprising a water-soluble nickel salt, a complexing agent, and a hypophosphite to thereby form a nickel--phosphorus alloy layer on the surface of the zincate film-coated substrate, and forming a magnetic layer on the nickel--phosphorus alloy layer.
    Type: Grant
    Filed: November 2, 1998
    Date of Patent: December 19, 2000
    Assignee: C. Uyemura & Co., Ltd.
    Inventors: Hideyuki Takami, Masahiro Nozu, Yuki Adachi, Mika Fukuya