Interference No. 103,272
Mr. Hess testified that in 1987 he was the operation lead of the product
development lab and oversaw the testing (molding test samples, Izod Impact testing,
making test chips, and conducting Kasha Index measurements), and that he wrote weekly
reports on the amount of work that went through the lab. HR 287 and 288. He testified that
he supervised the compounding of resin powders into pellets. HR 290. He testified that
HX 3 is a request, dated July 13, 1987, from Dr. Cooper to extrude a sample of the para-
cumyl phenol endcapped polycarbonate resin powder (RL 5568) into pellets, some being
compounded with a stabilizer R 542 and some compounded with a mold release agent R
538 and to extrude a parallel sample of RL 5404 (a similar grade of polycarbonate resin
endcapped with para-tertiary butyl phenol). Mr. Hess testified that in accordance with the
request, Mr. Butler, a technician, now deceased, working under Mr. Hess’ direction and
supervision, extruded six batches, three for each resin. HR 291 to 303; HX 3 and 10. Mr.
Hess testified that each of the six batches was tested on July 23 and 24, 1987, for its
Kasha Index measurement; that the Kasha Index test is a simple, routine and regularly
conducted test; that the results show that each batch had a Kasha Index value falling in the
range between 2800 and 3400 at 250EC; that the results were recorded in log book (HX
11); and that he is the custodian of the record. HR 303 to 308. He also testified that the
six extrusion batches (para-cumyl phenol versus para-tertiery butyl phenol endcapped disc
resins) identified in HX 3 were prepared for ductile/brittle transition testing (notched Izod
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