Interference No. 103,272
to 436. This teaching appears at page 2, lines 24 to 28, of the Heuschen application and
reads as follows:
The polycarbonates useful in the application of
this invention are the usual polycarbonates which have been
known for at least 30 years. They are prepared by standard
methods and utilize the typical dihydric phenols employed in
the synthesis of polycarbonates.
Dr. Heuschen further testified that pH equilibration is a routine practice in the
prior art of making polycarbonates, and that a similar procedure is also described in the
Okamoto patent at column 3, line 43 to column 4, line 9. HR 411 to 414, 416, 417, and
569 to 572. In support of its position, the party Heuschen also filed a notice under 37 CFR
§ 1.682 which introduces into evidence five U.S. patents (HX 15, 16, and 21 to
-22-
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