Interference No. 102,922
Interference No. 103,088
chemicals and forwarded them to the papermakers to make the
handsheets. The handsheets were returned to Kelly and sent
for testing. Alberts received document DX 9 containing the
request and results. (Alberts DR 172-174, Evans DR 91-92, 95-
100, Fredericks DR 217-221, Kelly DR 403, 407, and Rienzo DR
389-390). The tests showed improved sizing for the treated
HerconŽ PCC (DR 37-39).
On August 20 1987, Hercules sent to Pfizer samples of the
HerconŽ cationic dispersants, HerconŽ48 and HerconŽ85 labeled
X20870-36 and X20870-37, respectively. On December 1, 1987,
Peters of Pfizer sent a memo to Gill, with a copy to Dumas,
indicating that Pfizer prepared handsheets as instructed
containing Pfizer's PCC treated with .2 and .8% Hercules
products X20870-36 and X20870-37. Pfizer concluded that
there was only a slight improvement. When Dumas and
corroborator Evans next met with Gill and others in
Wilmington, on December 10, 1987, Pfizer asked what they could
do to improve the results they obtained and Hercules suggested
that they lower the pH and reduce the holding time of the
slurry (DX 11). Dumas' memo (DX 11) confirms this meeting and
indicated that Pfizer would repeat their work and get back to
Hercules. On Jan. 22, 1988 (DX 12), Peters sent a memo to
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