Appeal No. 2001-1771 7
Application No. 09/205,782
less than one one-hundredth of a wavelength at the highest frequency to be
shielded, thus making the mat a poor radiator and consequently a good
absorber of the frequencies below this highest frequency. Typically, the
conductive sheet 201 is made extremely thin and the mat is fabricated from
material which may be easily cut to aid in fitting this shielding about the
contours of a particular circuit. . . .
In the operation of this shielding, the low frequency H-fields and the E-
fields are absorbed by the mat. [Col. 3, lines 39-62.]
The examiner has pointed to nothing in the applied prior art (i.e., Adkins and
AAPA), and we are aware of nothing therein, that would have motivated one of ordinary
skill in the art at the time of appellants’ invention to pick out the material mentioned in
AAPA from all available prior art materials as being a suitable substitute for the EMI
absorbent materials disclosed by Adkins. The circumstance that the material of AAPA is
known to be porous and would have been recognized by one of ordinary skill in the art as
allowing coolant such as air to pass therethrough does not, in our view, suffice in this
regard. This is so because, although Adkins describes porosity for cooling purposes to be
a desirable property of the mat material (see, for example, col. 4, lines 21-24), the main
objective of Adkins is the provision of shielding that will absorb EMI (see col. 3, lines 30-
36). Nothing in AAPA indicates that the material thereof has properties (e.g., appropriate
3(...continued)
Third New International Dictionary, copyright © 1971 by G. & C. Merriam Company.
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007