Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From fluorine-containing reactant
Reexamination Certificate
2006-04-26
2008-08-05
Truong, Duc (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From fluorine-containing reactant
C568S579000, C568S615000
Reexamination Certificate
active
07408019
ABSTRACT:
A novel fluorinated ether compound useful as an inert medium is provided.The compound is represented by the following formula (1) such as the compound represented by the following formula (1a) or the compound represented by the following formula (1b):in-line-formulae description="In-line Formulae" end="lead"?RF1OCFRF2CFRF2ORF1 (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?F(CF2)4OCF(CF3)CF(CF3)O(CF2)4F (1a)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?F(CF2)6OCF(CF3)CF(CF3)O(CF2)6F (1b)in-line-formulae description="In-line Formulae" end="tail"?wherein the symbols have the following meanings:RF1is a C4-7linear perfluoroalkyl group; andRF2is a fluorine atom or a trifluoromethyl group.
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Iwaya Masao
Oharu Kazuya
Okamoto Hidekazu
Takagi Hirokazu
Asahi Glass Company Limited
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Truong Duc
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