Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2004-11-16
2009-08-25
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S161000, C526S943000, C526S941000, C526S348600, C526S351000, C526S352000, C502S103000, C502S104000, C556S053000, C549S041000, C549S059000
Reexamination Certificate
active
07579417
ABSTRACT:
A metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, same or different, is a hydrogen atom, a halogen atom, or a R, OR, OSO2CF3, OCOR, SR, NR2or PR2group, wherein R is C1-C40hydrocarbon group; L is a divalent bridging group; R1, is a C1-C40hydrocarbon group; R3is a C1-C40hydrocarbon group; R2, R4, R5, R6, R7and R8, equal to or different from each other, are hydrogen atoms or C1-C40hydrocarbon groups.
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Ivchenko Pavel V.
Nifant'ev Ilya
Resconi Luigi
Tajdakov Ilya V.
Basell Polyolefine GmbH
Choi Ling-Siu
Lee Rip A.
Raphael Jarrod N.
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