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[DY] (IBM [US]) [DY] 1-8 * page 4, line 45 - page 5, line 35; claims 1-23 *; | Type: | Patent literature | Publication No.: | EP0861855
[PY] (CLARIANT INT LTD [CH]) [PY] 1-8 * the whole document *; | Type: | Patent literature | Publication No.: | FR2156309
[A] (BASF AG) [A] 1 * page 3, line 18 - page 5, line 35; claims 1-9 *; | Type: | Patent literature | Publication No.: | US5654376
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[XP] (SONY CORP); | Type: | Patent literature | Publication No.: | JPH0675378
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[A] (SUMITOMO CHEMICAL CO); | Type: | Patent literature | Publication No.: | JPH07316268
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