Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2007-01-23
2007-01-23
Choi, Ling-Sui (Department: 1713)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S160000, C526S943000, C526S941000, C502S103000, C556S053000, C556S052000, C556S051000
Reexamination Certificate
active
10525929
ABSTRACT:
A novel transition metal compound wherein the transition metal belongs to group 4 of the periodic table and the transition metal compound has a hydrogen atom ligand and three cyclopentadienyl ligands comprising at least one substituted cyclopentadienyl ligand. The novel transition metal compound can be used as a component of a catalyst exhibiting high activity for olefin polymerization and is characteristic in containing no halogen element.
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Fukuda Tetsuro
Nakajima Kiyohiko
Seki Takashi
Shimizu Hiroyuki
Takahashi Tamotsu
Choi Ling-Sui
Japan Polyethylene Corporation
Lee Rip A.
Scully Scott Murphy & Presser, PC
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