Appeal No. 2007-0111
Reexamination 90/006,297
1 titanium halide compound) and used without aging;11 (ii) triethylaluminum
2 (corresponding to the appellant’s recited aluminum alkyl compound); and (iii) n-
3 heptane. (Example 53; Table V.)
4 The following table summarizes Vandenberg’s description of each and every
5 limitation of the invention in the appealed claim 1:
Appealed claim 1 Vandenberg
“A process which comprises “This invention relates to an improved
polymerizing ethylene” process for polymerizing olefins alone
or in admixture...” (column 1, lines 8-
10); 2 parts of ethylene described as a
comonomer (Example 53, Table V)
“with an alpha-olefin, CH2=CHR, octene-1 described as a comonomer
wherein R is a saturated aliphatic radical (Example 53, Table V)
with 2 or more carbon atoms or a
cycloaliphatic radical,”
“in the presence of a catalyst obtained in the presence of: (i) a hydrocarbon-
by reacting an aluminum alkyl insoluble reaction product prepared by
compound with a catalytic titanium mixing 0.0603 part of diethylaluminum
halide compound.” chloride (corresponding to the
appellant’s recited aluminum alkyl
compound) and 0.0475 part of titanium
tetrachloride (corresponding to the
appellant’s recited titanium halide
compound) and used without aging; (ii)
triethylaluminum (corresponding to the
appellant’s recited aluminum alkyl
11 Vandenberg teaches that mixing the titanium compound with an
organoaluminum compound forms a precipitate of lower valence titanium
compounds in the hydrocarbon solvent. (Column 1, lines 14-55.) Thus, the
hydrocarbon-insoluble reaction product of Vandenberg’s Example 53, like the
titanium tetrachloride per se, corresponds to the patent owner’s recited titanium
halide compound.
78
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