The opinion in support of the decision being entered today was not written
for publication and is not binding precedent of the Board.
UNITED STATES PATENT AND TRADEMARK OFFICE
__________
BEFORE THE BOARD OF PATENT APPEALS
AND INTERFERENCES
__________
Ex parte VLADISLAV DOLNIK, WILLIAM A. GURSKE
and ALLAN PADUA
__________
Appeal No. 2005-1918
Application No. 09/946,396
__________
ON BRIEF
__________
Before SCHEINER, ADAMS and GREEN, Administrative Patent Judges.
SCHEINER, Administrative Patent Judge.
DECISION ON APPEAL
This is a decision on appeal under 35 U.S.C. § 134 from the final rejection of
claims 1-5. Claims 6-23 are also pending, but have been withdrawn from consideration.
BACKGROUND
Galactomannans, linear polysaccharides made up of mannose and galactose
residues in various proportions, are the primary components of many commercially
available gums, e.g., guar gum (guaran), tara gum and locust bean gum. According to
appellants, “[o]nly [a] limited number of methods have been [used] to purify guaran and
other galactomannans.” (Specification, page 3). “Usually guaran is dissolved in water
and a cold water insoluble pellet is removed by filtration or centrifugation” and protein
contaminants are separated by precipitation with alcohols including ethanol, methanol
and isopropyl alcohol, resulting in a galactomannan preparation with a “relatively high
(above 1%)” protein content (id.).
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