Appeal No. 2007-0111
Reexamination 90/006,297
1 2. The catalyst recited in the appealed claims encompasses virtually all,
2 if not all, known Ti-halide/alkylaluminum complex catalysts classified
3 as Ziegler-Natta catalysts. (See Encyclopedia of Polymer Science and
4 Technology at 517-36.)
5 3. Giulio Natta, one of the named inventors, and Karl Ziegler (Max
6 Planck Institute for Carbon Research) were jointly awarded the 1963
7 Nobel Prize in Chemistry for “high molecular weight polymers with
8 spatially regular structures,” i.e., polyolefins having stereospecific
9 structures such as isotactic polypropylene based on the use of these
10 catalysts. (Appeal brief filed September 22, 2003, paper 17 at 3;
11 Encyclopedia of Polymer Science and Technology at 517.)
12 4. The polymers resulting from the claimed process are ubiquitous in
13 human civilization and are made into a wide variety of everyday
14 products (e.g., grocery bags).
15 5. According to the Encyclopedia of Polymer Science and Technology,
16 which is dated 2003, total polyolefin production worldwide exceed 50
17 million tons/year.
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