Appeal 2007-1853
Application 10/987,347
including all of the limitations of the base claim and any intervening
claims.” We have jurisdiction pursuant to 35 U.S.C. § 6.
STATEMENT OF THE CASE
The subject matter on appeal is directed to a method of fabricating a
pressed adsorbent (Specification 1). According to page 2 of the
Specification:
The resin bonded adsorbent of the present invention is
fabricated by a simplified process requiring essentially only a
resin and the adsorbent which are combined to create various
forms by simple pressing without the addition of external heat
during the pressing process.
The Specification at page 3 goes on to explain that:
It is believed that the mechanics of the pressing action is that by
the use of very fine and low softening point polyethylene, good
bond strength will be obtained with only pressure and without
external heat. It is further believed that the heat generated by
the pressing action causes the powdered polyethylene to soften
and flow between the particles of silica gel and agglomerate to
form a porous matrix. When the pressure is released, the
composition cools, and after the polyethylene hardens, the
formed matrix gives the pressed part strength to permit it to stay
together.
Details of the appealed subject matter are recited in representative claim 1
reproduced below:
1. A method of fabricating a pressed adsorbent form consisting
essentially of the steps of forming a blend of powdered adsorbent and
powdered resin, and compressing said blend to form a self-sustaining form
in the absence of heating during formation.
2
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Last modified: September 9, 2013