Appeal No. 96-2797
Application No. 08/432,474
example, in U.S. Patent Nos. 3,632,498 and
3,711,385, so that the reconstructed and
recoated anodes do not have to be heated
after the added portions are attached to
the anode risers or the portions of the
previously used anode envelopes or working
faces which are attached to the risers
[emphasis added].
Appellants contend, and we think correctly, that the
“applied and baked on as described” language with reference to
the de Nora and Beer patents pertains to conventional industry
practice which involves applying a new coating using a thermal
decomposition method rather than an electrolytic method as
claimed. In this regard, de Nora refers to a coating mixture
comprising halides of noble metals which is applied to a
cleaned electrode to be recoated, by brush, roller,
electrostatic spraying, dipping or other coating methods in a
series of 5 to 15 coats with drying and baking at 300° to 460°
C. between each coat until the required coating weight has
been applied. See de Nora at column 4, lines 35-64.
Likewise, the Beer patent discloses a similar working
example wherein a mixture of a platinum metal compound is
applied to an anode core by painting or brushing with
intermediate heating. See example 1A of Beer. Accordingly,
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