Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2005-01-25
2005-01-25
Teskin, Fred (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C560S008000, C560S009000, C560S010000, C560S018000, C560S019000, C560S055000, C560S056000, C560S064000, C560S100000, C560S106000, C560S107000, C556S489000
Reexamination Certificate
active
06846890
ABSTRACT:
A novel norbornene derivative represented by a general formula (1m) shown below is provided. By conducting a ring opening polymerization of this norbornene derivative, or by performing a subsequent hydrogenation following the ring opening polymerization, a ring opening polymer or a hydrogenated product thereof with an excellent low birefringence can be obtained.[wherein, at least one of R1to R4is a group selected from the group consisting of groups represented by a general formula (1-1) shown below and groups represented by a general formula (1-2) shown below][wherein, at least one of RA, RBand Z is a group represented by the formula —C(O)O—].
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U.S. Appl. No. 10/488,096, filed Mar. 8, 2004, inventor Miyaki et al.
U.S. Appl. No. 10/491,433, filed Apr. 12, 2004, inventor Sekiguchi et al.
Fukuhara Seiji
Miyaki Nobuyuki
Miyamoto Yoshikazu
Ootsuki Toshihiro
JSR Corporation
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Teskin Fred
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