Appeal 2007-3373
Application 10/477,363
1 The patent application publication
2 The pages of the specification, as filed, do not have line numbers.
3 Accordingly, reference will be made to the U.S. Patent Application
4 Publication 2004/0156933 A1, the published version of the specification.
5 The publication has paragraph numbers to which reference will be made.
6 The invention
7 The invention relates to "additives" that are made up of (1) known
8 polymer additives having moieties which are chemically bound to (2)
9 hyperbranched or dendritic polymers (including dendritic copolymers).
10 Publication, ¶ 0001.
11 According to Ciba, highly branched dendritic polymers are well
12 known. Publication, ¶ 0009.
13 Apart from Ciba's discussion of dendritic polymers in the
14 specification, we have found the following discussion in Stevens,
15 Polymer Chemistry, Oxford University Press, pages 9-10 (3d ed. 1999)
16 (ISBN 0-19-51244408) [footnotes and some other material omitted]:
17 Dendrimers, also known as dendritic, Starburst …, or cascade
18 polymers, resemble star polymers except that each leg of the
19 star exhibits repetitive branching in the manner of a tree (Greek,
20 dendron, tree). Certain extremely branched polymers, termed
21 hyperbranched polymers, are related to dendrimers in that they
22 exhibit dendritic branching, but the branches do not emanate
23 from a central core, nor is the branching necessarily regular as it
24 is in dendrimers. Dendrimers … [and] hyperbranched polymers
25 … represent new and rapidly developing areas of polymer
26 chemistry with potentially useful industrial applications.
27
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