Appeal No. 95-1473
Application No. 07/997,279
Similarly, we find no evidence and the examiner points to
none specifically in support of his viewpoint expressed in the
first paragraph on page 4 of the Answer that the phosphors under
consideration “are known to be lehring sensitive and hence the
use of ammonium compounds including ammonium chloride in coating
compositions containing them to minimize adverse effects of
lehring would have been suggested therefrom.” Indeed, Ropp’s
disclosure in column 3 evinces the contrary as earlier explained.
As a consequence, we do not share the examiner’s aforequoted
viewpoint.
As for Vodoklys, it is the examiner’s opinion that “this
reference teaches the reheating of Sb and Mn alkaline earth
halophosphate phosphor with ammonium chloride at temperatures
used to coat fluorescent lamps and hence it is considered to be
an obvious expedient to include ammonium chloride in the coating
composition since the reheating would be effected during lamp
preparation” (Answer, pages 4-5). We cannot agree. The
reheating step of Vodoklys’ process (e.g., see lines 31 through
35 in column 2) includes temperatures that are generally higher
and times that are significantly longer than those of the lehring
step in a lamp preparation process (e.g., see the Westinghouse
reference). For this reason, there would have been no reasonable
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