Appeal No. 1996-2738
Application 08/252,501
attempt to show that the products of Hofreiter and Jarowenko
differ from the claimed product in an unobvious manner.
Appellants argue that Hofreiter, at column 2, lines 45-
50, refers to synthetic polymer type compounds and “there is
no indication anywhere in the reference that they are starch
containing compounds.” (Brief, page 3). Appellants’ argument
is not well taken since Hofreiter alternatively refers to
“polymeric nitrogen containing compound” and “a positively
charged nitrogen containing starch product” (column 1, lines
17-25). Therefore it is clear that the “cationic polymeric
nitrogen-containing compounds” disclosed by Hofreiter at
column 2, lines 45-50, refer to the corresponding nitrogen
containing starch product, especially taken in context with
the previous disclosure of the preparation of amine-
substituted starch derivatives (column 2, lines 15-44).
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