Radiation imagery chemistry: process – composition – or product th – Radiation modifying product or process of making – Radiation mask
Reexamination Certificate
2005-01-04
2005-01-04
Huff, Mark F. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Radiation modifying product or process of making
Radiation mask
C430S030000, C430S322000, C427S240000, C118S401000
Reexamination Certificate
active
06838215
ABSTRACT:
A method for producing a graytone mask capable of satisfying a dimensional accuracy of a predetermined graytone pattern, on a graytone mask having, at least in a part, a predetermined graytone pattern. Suppressed to ±1% or less an on-plane distribution in thickness of a resist film to be applied onto a substrate in a graytone mask producing process.
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Korean Office Action for Patent Application No. 2002-58830, dated Jun. 30, 2004.
Hoya Corporation
Huff Mark F.
Sagar Kripa
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