Appeal No. 1997-2087
Application No. 08/203,837
also discloses that the active ingredients are released in a desired sequence when placed
in a liquid medium containing hydrogen peroxide (col. 2, lines 16-44).
Both Kruse and Kaspar provide the basic structure of a core layer with a neutralizing
agent encapsulated by a time release layer and the basic concept of dissolving the
components of the solid composition in a particular sequence. However, neither of these
references suggest providing an outer layer containing a cellulose decomposing enzyme
component (CDEC) over the time release layer or providing a cleaning enzyme component
in connection with the core layer of neutralizing agent. The examiner seeks to rectify these
deficiencies with the teachings of Huth and Izumi.
Huth is directed to a process for cleaning and disinfecting contact lenses with a
"solution containing a mixture of peroxide and peroxide-active enzymes" (col. 1, lines
7-11). Huth acknowledges the problem of proteinaceous buildup on contact lenses (col. 1,
line 66 to col. 2, line 19). Huth addresses this problem by providing a solution of peroxide
for disinfecting combined with a cleaning enzyme (col. 3, lines 16-20). The examiner relies
on Huth to disclose "that it is conventional to use enzymes to remove proteinaceous build-
up on contact lenses which act to irritate the eyes' of the wearer" (Examiner's Answer, page
5).
Izumi is directed to a contact lens disinfecting system that employs a lysozyme
(chitin or cellulose decomposing enzyme component) combined with hydrogen peroxide to
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