Appeal No. 1997-2087
Application No. 08/203,837
Thus, the CDEC is first released in the liquid medium (specification, page 7). After the
contact lens is disinfected, the HPDC and the cleaning enzyme component are released to
destroy all the hydrogen peroxide contained in said liquid medium and to remove the
protein deposits on said contact lens, respectively (specification, page 17).
THE REJECTION UNDER 35 U.S.C. § 103
The examiner has rejected all the claims on appeal as being obvious over Kruse,
Kaspar, Huth and Izumi.
Kruse discloses a solid composition for disinfecting contact lenses comprising the
structure of a core layer containing a neutralizing agent which neutralizes a disinfecting
agent, a time release coating and an outer layer containing the disinfecting agent (col. 2,
lines 15-26). The disinfecting agent is preferably one that supplies hydrogen peroxide (col.
2, lines 36-40). The neutralizing agent can include ascorbic acid and catalase (col. 3, lines
30-36). The time release layer can be made of polyvinyl alcohol, polyvinylpyrrolidone and
other materials (col. 4, lines 20-29). Kruse also discloses that the active ingredients are
released in a desired sequence (reverse sequence of manufacturing) (col. 2, lines 28-30).
Kaspar discloses a solid composition for disinfecting contact lenses comprising the
structure of a core layer containing a hydrogen peroxide neutralizing agent and a time
release coating (col. 2, lines 25-44). The neutralizing agent can include ascorbic acid and
catalase (col. 4, lines 29, 44). The time release layer can be made of cellulose based
materials, polyvinyl alcohols, and other materials (col. 5, line 62 to col. 6, line 4). Kaspar
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