Interference No. 102,922
Interference No. 103,088
now assigned to Mineral Technologies, Inc.
The subject matter in issue in the ‘922 interference
comprises a composition containing inorganic filler particles
that are surface treated with a certain cationic polymer
(Count 1) and to the method of making the surface treated
filler (Count 2). The inorganic particles include calcium
carbonate, clay,
titanium dioxide, talc and silica/silicate. The cationic
polymer
is an alkyl ketene dimer(AKD) of a certain formula made
cationic
as a result of treating the dimer with a natural or synthetic
cationic polymer, e.g., a polyamido-amide and/or a polyamine
polymer reacted with a epoxidized halohydrin such as
epichlorohydrin. The two counts are set forth in APPENDIX A.
Dumas' claims 1-9 and Gill's claims 2-8 and 10-12 correspond
to count 1; and Dumas's claims 10-16 and Gill's claims 14 and
15
correspond to count 2.
Interference No. 103,088 (herinafter ‘088) involves the
3
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Last modified: November 3, 2007