Appeal No. 1999-0406
Application 08/484,019
With additional regard to the method of making the
generator, Friedheim teaches that
[a]fter casting, the inside of the generator
parts are wire brushed and thoroughly cleaned, then
the chambers are internally chemically etched with a
caustic material. The generator halves are filled
with the caustic material and allowed to remain so
over night, at least 8 hours. Sufficient time is
required to thoroughly etch and as deep as possible,
for it is this surface which enables the liquid to
explode (flash) upon contact when pumped into the
chamber [column 2, line 63, through column 3, line
3].
Anticipation is established only when a single prior art
reference discloses, expressly or under principles of
inherency, each and every element of a claimed invention. RCA
Corp. v. Applied Digital Data Sys., Inc., 730 F.2d 1440, 1444,
221 USPQ 385, 388 (Fed. Cir. 1984). In other words, there
must be no difference between the claimed invention and the
reference disclosure, as viewed by a person of ordinary skill
in the field of the invention. Scripps Clinic & Research
Found. v. Genentech Inc., 927 F.2d 1565, 1576, 18 USPQ2d 1001,
1010 (Fed. Cir. 1991).
Independent claim 1 recites a vapor generator comprising,
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