Appeal No. 1996-2470
Application 08/192,488
denitrification is deemed to be obvious to the
Propionibacterium” (answer, page 4). The examiner, however,
provides no evidence that Ott’s feed composition prevents
nitrate intoxication in a ruminant, and does not explain why
Ott would have fairly suggested, to one of ordinary skill in
the art, feeding the disclosed composition to a ruminant
intoxicated by nitrates. Moreover, Ayres ‘718 (col. 1, lines
43-46 and col. 2, lines 2-4) teaches that Propionibacterium
acidipropionici produced 0.96% propionic acid and 0.20% acetic
acid, i.e., nearly five times as much propionic acid as acetic
acid. The examiner has not explained why one of ordinary
skill in the art would have been motivated to use this specie
in the Ott composition wherein more acetic acid than propionic
acid, i.e., an acetic acid to propionic acid ratio of 1.5-
4.0:1, is desired.
Ayres ‘718 discloses a method for preserving food and
feed by use of a Propionibacteria antimicrobial additive (col.
5, lines 23-66), and Ayres ‘061 discloses a method for
inhibiting yeast spoilage in food products by use of an
antiyeast food additive obtained by growing Propionibacteria
6
Page: Previous 1 2 3 4 5 6 7 8 9 10 Next
Last modified: November 3, 2007