Patents Represented by Attorney Wendeoth, Lind & Ponack, L.L.P.

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  • Entry sheet for drilling and method for drilling hole
    Patent number: 6866450
    Abstract: An entry sheet for drilling for a printed wiring board material, which comprises a water-soluble resin (A) and a water-insoluble lubricant (B) as essential components, an entry sheet for drilling for a printed wiring board material, which sheet comprises a metal foil having a thickness of 5 to 200 ?m and a thermosetting resin (E) layer having an average thickness of 1 to 10 ?m, the thermosetting resin (E) layer being formed on one surface of the metal foil, and a method for drilling a hole by using the above entry sheet.
    Type: Grant
    Filed: October 24, 2002
    Date of Patent: March 15, 2005
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takuya Hasaki, Shinya Komatsu, Norio Nagai