Appeal No. 2003-2020
Application No. 08/944,208
resin as a second component with lower heat-deforming
temperature. Therefore, Kato discloses a disk cartridge made of
at least two types of thermoplastic resins with different heat-
deforming temperatures.
Kato further discloses (column 14, lines 33-35) that an
inorganic filler may be added to the polymeralloys described
above (which includes the styrol/polycarbonate polymeralloy
relied upon by the examiner). Kato states (column 16, lines 31-
36) that calcium carbonate (one of the fillers used by appellants
on page 11 of the specification) is one of the preferred
inorganic fillers. In addition, Kato explains (column 16, line
62-column 17, line 4) that the benefit of using filler, provided
the weight percent is within a particular range, is increased
rigidity.
As recognized by the examiner (Final Rejection, page 3), the
only limitation that Kato fails to teach is the addition of an
antistatic polymer. The examiner applies Yamamoto to remedy this
deficiency. Specifically, Yamamoto's objective is an antistatic
material having a high reliability for a container or package for
electronic packages (see column 1, lines 56-63). Yamamoto
teaches (column 2, line 62-column 3, line 17) that for the base
polymer, ABS resin or polycarbonate resin, among others, may be
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