Appeal No. 1997-1230
Application 08/274,807
As to the obviousness issue, the following prior art
references are brought to the examiner’s attention for their
disclosures regarding the known properties of Vectra A130™, a
material acknowledged by appellants on page 4 of the
specification to be a liquid crystal plastic material suitable
for use in the presently claimed invention. Specifically,
Patent No. 4,904,364 to Davis is cited for its
teaching at column 5, line 64 through column 6, line
5, of Vectra A130 as a suitable material for molding
where a very low rate of shrinkage is desired.
Patent No. 4,928,032 to Skoch is cited for its
teaching at column 4, lines 34-58, of Vectra A130 as
an injection moldable polymeric material that can
achieve a high degree of dimensional precision.
Patent No. 5,179,607 to Sellers is cited for it’s
teaching at column 6, lines 4-39, of Vectra A130 as
the preferred material for patentee’s device where
the material must permit injection molding, provide
the required shape, tight tolerances and smooth
surfaces for the molded part, and also provide
adequate creep resistance to insure stable geometry
for long periods of time.
In addition, Patent No. 5,112,078 to Davis is cited for
its teaching at column 2, lines 31-41, of Vectra 130 as a
moldable liquid plastic polymer material having substantially
no shrink rate.
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