Appeal No. 95-1473
Application No. 07/997,279
alkaline earth chlorofluorophosphate phosphor activated by
antimony (and manganese) and from about 0.5 to about 3 percent by
weight based upon the weight of the phosphor of ammonium chloride
for suppressing halogen loss from said phosphor during lamp
manufacture and improving lamp maintenance. Further details of
this appealed subject matter are readily apparent from a review
of non-appealed independent claim 1 and appealed claim 7 which
depends therefrom, and a reproduction of these claims is set
forth below:
1. An aqueous coating suspension for a fluorescent lamp
comprising particles of an alkaline earth chlorofluorophosphate
phosphor activated by antimony and manganese, water, at least one
water soluble binder, and additional ingredients selected from an
oxide adherence promoter, defoaming agent and a surface active
agent depending on the desired characteristics of said aqueous
suspension, and a sufficient amount of ammonium chloride for
suppressing halogen loss from said phosphor during lamp
manufacture and improving lamp maintenance.
7. An aqueous coating suspension according to claim 1
wherein said amount of ammonium chloride comprises from about 0.5
to about 3 percent by weight based upon the weight of said
phosphor.
The following prior art is relied upon by the examiner as
evidence of obviousness:
Vodoklys et al. (Vodoklys) 3,470,106 Sep. 30, 1969
Ropp 3,679,452 Jul. 25, 1972
Dutch application 7,506,340 Dec. 16, 1975
(Westinghouse)
2
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