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on 15 Dec 2001
HOECHST CELANESE CORPORATION
74385559 · 03 May 1993
001
sodium hydrosulfite blend for refiner bleaching,sodium hydrosulfite bl...
on 15 Dec 2000
HOECHST CELANESE CORPORATION
74329605 · 09 Nov 1992
001
de-inking chemical used to remove ink from paper prior to recycling,de...
on 13 Jan 1995
HOECHST CELANESE CORPORATION
74436216 · 16 Sep 1993
001
paper treatment chemical; namely, bleach for paper,paper treatment che...
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