Appeal No. 94-2973
Application No. 07/956,529
(II) a water-soluble anionic modified polyvinyl alcohol (col. 3,
lines 3-18 and lines 34-46). There is no dispute that the
polymeric dispersants and phosphate dispersants disclosed in
Shioji may be used alone or in combination with each other (Reply
Brief, p. 3). Shioji further discloses that typical examples of
the water-soluble condensed phosphate (b) include “sodium,
potassium, lithium, and other alkali metal salts” (col. 6, lines
6-8).
We agree with appellant that claim 1 “requires the
combination of one or more polymeric anionic dispersants and one
or more selected alkali metal salts which do not include
phosphate salts” (Brief, p. 6; emphasis in original). According
to the examiner (Answer, p. 10):
The disclosure of Shioji at col. 7, line 62 to col. 8,
line 5 clearly shows inorganic metal salts that fall
within the scope of the presently claimed inorganic
metal salts or alkali metal salts.
We agree with appellant that Shioji does not disclose water-
soluble alkali metals salts falling within the scope of claim 1.
As correctly pointed out by appellant (Reply Brief, p. 4):
“The disclosure of Shioji at col. 7, line 62 to col. 8,
line 5" does not disclose any alkali metal salts. As
stated above, Shioji discloses only “hydroxides,
carbonates, halides, and phosphates of calcium,
magnesium[,] aluminum and other similar polyvalent
metals” (col. 7, line 68-col. 8, line 2, emphasis
5
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