Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2007-07-24
2007-07-24
Sellers, Robert (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C174S255000, C428S297400, C428S413000, C525S390000, C525S391000, C528S219000
Reexamination Certificate
active
11110917
ABSTRACT:
A bifunctional phenylene ether oligomer of the formula (1), obtained by oxidation polymerization of a bivalent phenol of the formula (2) and a monovalent phenol of the formula (3),wherein —X— is represented by the formula (2′),and Y—O— is represented by the formula (3),R2, R3, R4, R8, R9, R10 and R11 in the formula (2′) and the formula (3′) being required not to be a hydrogen atom, and its use.
REFERENCES:
patent: 5270435 (1993-12-01), Pfaendner et al.
patent: 6689920 (2004-02-01), Ishii et al.
patent: 921158 (1999-06-01), None
Amagai Akikazu
Hiramatsu Kiyonari
Ishii Kenzi
Miyamoto Makoto
Norisue Yasumasa
Mitsubishi Gas Chemical Company Inc.
Sellers Robert
Wenderoth , Lind & Ponack, L.L.P.
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