Appeal 2007-1938
Application 10/050,437
[17] Droege describes typical gelation temperatures from about 20 to about
70oC and typical gelation times from about 0.1 to about 24 hours
(Droege col. 9, ll. 50-51 and 56-57).
[18] Droege describes typical curing temperatures from about 50 to about
95oC and typical curing times from about 3 to about 72 hours (Droege
col. 10, ll. 17-18 and 23-24).
[19] Conventional drying methods, including supercritical evaporation
using carbon dioxide exchange, may be used (Droege col. 10, l. 65-
col. 11, l. 6 and col. 11, ll. 27-45).
[20] Droege describes typical pyrolysis temperatures from about 600 to
3000o C, e.g., from about 800 to about 1150o C, and typical pyrolysis
times from about 1 to about 6 hours (Droege col. 13, ll. 22-25 and 29-
30).
[21] According to Droege, pyrolysis temperature varies with pyrolysis time
and the composition and amount of aerogel (Droege col. 13, ll. 19-
22).
[22] According to Droege, its aerogels are characterized by meso-pore size
distributions including embodiments from about 5 to about 50 nm,
from about 7 to about 50 nm, from about 10 to about 50 nm, and from
about 10 to about 25 nm (Droege col. 11, ll. 54-65).
[23] For example, processing aerogels prepared with a solids content of
greater than R=50% w/v yield gels with pore sizes not larger than
about 100 nm (Droege col. 12, ll. 19-30).
[24] Example 3 of Droege is said to describe formation of an
aerogel/carbon fiber substrate composite having a pore size
6
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