Appeal No. 1997-1291
Application 08/283,934
debonder to a creped and overdried web in the Ampulski process. Ampulski’s goal is to
use as little water as possible in his process because it can degrade the product causing
a loss in crepe and/or tensile strength (column 13, lines 20-24). Ampulski teaches that any
water that is added to the paper by his process is less than what would normally be taken
up by the atmosphere upon cooling to room temperature (column 13, lines 27-30).
Ampulski limits the use of water by applying a dilute aqueous chemical papermaking
additive solution on to a hot transfer surface having a temperature below the boiling point
of water to evaporate the solvent from the additive solution before transferring the additive
to the web (column 14, lines 18-47). Thus, in our view the examiner has not adequately
explained why one of ordinary skill in the art would have combined the teachings of
Ampulski, whose goal is to avoid or limit water in his process, with the teachings of Smith
to employ steam to evaporate and transfer the additive to the web.
REVERSED
MARY F. DOWNEY )
Administrative Patent Judge )
)
)BOARD OF PATENT
JOHN D. SMITH )
Administrative Patent Judge ) APPEALS AND
)
)INTERFERENCES
TERRY J. OWENS )
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