Appeal No. 2002-2184
Application No. 08/406,297
coefficient of thermal expansion of the carbon graphite body is substantially the same
as that of the ceramic piezoelectric material.” (Specification at pages 12-13.)
Additionally, the specification at page 13 states that the “preferred carbon material for
use in forming components on ink jet heads is polycrystalline graphite, which is mixture
of small crystals of graphite sintered with amorphous carbon black (lamp black) . . . The
thermal properties of polycrystalline graphite (Grade DFP-1 available from POCO
Graphite, Inc. Decatur, Texas).” Here, we find that the two materials described in the
making of the carbon material for the body are both carbon and they are sintered
together to make the body. Therefore, we find that appellants have described the
invention in the specification in such a way as to reasonably convey to one skilled in the
relevant art that the inventors, at the time the invention was made, had possession of
the claimed invention.
The examiner maintains that the examiner consulted with another examiner from
the chemical area of the PTO and that after a detailed discussion, concluded that the
specification is required to identify whether the carbon body is continuous based on the
arrangement and bonding of the carbon atoms throughout the member. (See answer at
page 9.) We disagree with the examiner’s requirement for a description of an
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