Appeal 2006-3252
Application 09/536,728
1 Compare the Esser compound of Formula 2 with the Olson compound of
2 Formula 6:
H
H H
N
H N
N
N CH3 H
3 H3C CH3
4 Formula 2
H
H H
N
H N
N
N CH3 H
H2C CH2
5 CH3 CH3
6 Formula 6
7 What reason is provided in the prior art for modifying the Olson of
8 Formula 6 to replace two ethyl groups (―CH2CH3) with two methyl groups
9 (―CH3)?
10 A person having ordinary skill in the art would be taught by Olson
11 that the R5 and R7 groups of the amino group at R3 can be hydrogen or lower
12 alkyl having 1-3 carbon atoms. Olson, col. 2:68. A lower alkyl having 1-3
13 carbon atoms include both methyl and an ethyl group.
23
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Last modified: September 9, 2013