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
2004-11-12
2009-02-03
Walke, Amanda C. (Department: 1795)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
C430S270150, C430S944000
Reexamination Certificate
active
07485404
ABSTRACT:
A novel nonsolvate-form crystal of polymethine compound is provided which has good stability in solution, shows a high gram extinction coefficient, is excellent in storage stability, is easy to handle and is highly sensitive to general-purpose semiconductor lasers.Thus is provided a nonsolvate-form crystal of polymethine compound of the formula (I) given below as well as a process for producing the nonsolvate-form crystal of polymethine compound of formula (I) which comprises reacting a polymethine ether compound of the formula (II) given below with hydrochloric acid or hydrobromic acid.(In the above formula, X represents Cl or Br.)(In the above formula, R represents an alkyl group, an alkoxyalkyl group or an optionally substituted aryl group.)
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Chichiishi Keiki
Fujita Shigeo
Wada Sayuri
Birch & Stewart Kolasch & Birch, LLP
Walke Amanda C.
Yamamoto Chemicals Inc.
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