Appeal No. 1999-0963 9
Application No. 08/787,189
F.2d 1300, 1302-03, 190 USPQ 425, 426-27 (CCPA 1976).
Rejections over Ziolo ’756
We shall not however, sustain the rejection of the claimed subject matter over
Ziolo ‘756. We find that Ziolo ‘756 is directed to a composite material comprising an
ion exchange resin and magnetic particles prepared in accordance with an earlier Ziolo
reference, U.S. Patent 4,474,866. See column 3, lines 7-9. We find the matrix is an
ion exchange resin preferably being a polystyrene sulfonic acid ion exchange resin cross
linked with 1 to 16% divinyl benzene. See column 3, lines 14-16. A magnetic colloid
is prepared from ferrous or ferric ions. See column 4, lines 1-2. Furthermore, we find
that examples of a precursor ion may include cobalt, and specifically cobalt acetate,
among a limited number of disclosed ions. See column 4, lines 2-13. However, even if
cobalt ions could be used in conjunction with ferrous or ferric ion, there is no suggestion
of the stoichiometry required by the claimed subject matter. Furthermore, there is no
disclosure or suggestion for the preparation of cobalt ferrite. As the composition
required by the claimed subject matter is neither disclosed nor suggested by the prior art
of record, we cannot further conclude that the magnetic anisotropy constant required by
the claimed subject would be present in any iron cobalt magnetic composition prepared
in accordance with the teachings of Ziolo ‘756. Based upon the above analysis, we have
determined that the examiner’s legal conclusion of obviousness is not supported by the
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007