Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Reexamination Certificate
2011-06-14
2011-06-14
Walke, Amanda C. (Department: 1722)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S311000, C430S273100, C430S312000, C430S317000, C430S318000, C430S322000, C430S331000
Reexamination Certificate
active
07960090
ABSTRACT:
A pattern forming method includes a step of forming a pattern of a resist on a surface of a thin film formed on the base material; a step of forming a reverse layer on the pattern of the resist; a step of forming a reverse pattern, of the reverse layer complementary to the pattern of the resist by removing the resist after removing the reverse layer to expose a surface of the resist; a step of forming a hard mask layer including the thin film, on which the reverse layer is formed, by etching the thin film through the reverse pattern of the reverse layer as a mask; and a step of etching the base material through, as a mask, the hard mask layer on which the reverse layer remains or the hard mask layer on which the reverse layer has been removed.
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Seki Jun-ichi
Terasaki Atsunori
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Walke Amanda C.
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