Appeal 97-1939
Application 08/375,049
Pagay
Pagay describes an aqueous enteric coating dispersion
containing items [a], [b] and [c] of applicants' claim 42.
Pagay differs from the subject matter of claim 42 in that
claim 42 requires the presence of ammonium hydroxide whereas
Pagay does not describe the use of ammonium hydroxide. The
Pagay enteric coating dispersion is used to coat capsules
"using air at a temperature in the range from 30EC to 60EC"
(col. 3, lines 5-6).
There is no indication in Pagay that spray nozzles will
clog at temperatures in the range of 30EC to 60EC. In an
EXAMPLE (col. 5), coating using air temperatures of 40E-44EC
is described (col. 6, line 43).
Porter
Porter also describes aqueous enteric coating dispersions
made from film forming polymers, a plasticizer, an auxiliary
film-forming polymer, pigment particles and optionally an
anti-caking agent (col. 2, lines 42-46). The polymers and
plasticizers are different from those described by Pagay.
Porter describes the use of an anti-coalescing or stabilizing
- 3 -
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007