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
2007-01-30
2007-01-30
Ashton, Rosemary (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C428S336000, C428S339000, C430S905000
Reexamination Certificate
active
11025589
ABSTRACT:
A chemically amplified positive photoresist composition for thick film that is used for forming a thick-film photoresist layer with a film thickness of 10 to 150 μm on top of a support, comprising (A) a compound that generates acid on irradiation with active light or radiation, (B) a resin that displays increased alkali solubility under the action of acid, and (C) an alkali-soluble resin, wherein the component (B) comprises a resin formed from a copolymer containing a structural unit (b1) with a specific structure.
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Misumi Koichi
Okui Toshiki
Saito Koji
Ashton Rosemary
Knobbe Martens Olson & Bear LLP
Tokyo Ohka Kogyo Co. Ltd.
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