Appeal 2007-2603
Application 10/958,559
a. destructurized starch;
b. a thermoplastic polymer, and
c. a plasticizer;
wherein said highly attenuated fibers contain less than 1% free water.
4. A nonwoven web comprising highly attenuated fibers consisting of:
a. from about 5% to about 85% of destructurized starch,
b. from about 15% to about 90% of a thermoplastic polymer
having a molecular weight of from about 5,000 g/mol to about
500,000 g/mol, and
c. from about 2% to about 70% of a plasticizer,
wherein said highly attenuated fibers contain less than 1% free water
and thermoplastic polymer microfibrils are formed within the starch
matrix in the highly attenuated fiber.
The Examiner relies on the following prior art references to show
unpatentability:
Tomka US 5,362,777 Nov. 8, 1994
Ryan US 6,506,873 B1 Jan. 14, 2003
The Examiner made the following rejection:
Claims 1-9 under 35 U.S.C. § 103 as unpatentable over Ryan in view
of Tomka.
ISSUE
Based on the contentions of the Examiner and the Appellants, the
issue before us is: Are the facts and reasons relied on by the Examiner
sufficient to establish that a person of ordinary skill in the art would have
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