Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2007-03-27
2007-03-27
Page, Thurman K. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
Reexamination Certificate
active
10531358
ABSTRACT:
Produce new 4,4′-dihydroxyphenyl bicyclohexenes that are useful as a material for liquid crystal polyester, polycarbonate, polyurethane or other synthetic resins or for photoresist used with display elements, semiconductors, etc., by thermally decomposing 4,4,4′4′-tetrahydroxyphenyl bicyclohexanes, preferably in the presence of alkali catalyst.
REFERENCES:
patent: 01-299821 (1989-12-01), None
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patent: 2000-034248 (2000-02-01), None
Journal of Chemical Research, Synopses (1996), (7), 318-319.
Ekawa Kenji
Oono Hiroyasu
Satomi Kouji
Gale Kellette
Honshu Chemical Industry Co. Ltd.
Knobbe Martens Olson & Bear LLP
Page Thurman K.
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