Appeal 2007-4227
Application 10/409,417
8. However, the temperature of a float glass ribbon as it exits the typical
float bath is said to be about 1150°F (620°C), so deposition of titania
precursors outside of the float bath, whether by CVD or spray pyrolysis,
tends to yield amorphous or poorly crystalline titania films.
(417 Application at 2, ¶ 4; and at 3, ¶ 6.)
9. The inventors disclose that the problems with low temperature
amorphous titania films may be overcome by adding to the titania precursor
materials a dopant comprising a metal from the list recited in claim 1.
(417 Application at 3, ¶ 8.)
10. According to the inventors, the dopant "can be present in any amount
to achieve a desired shift in the amorphous to crystalline transition
temperature of the titania material." (417 Application at 10, ¶ 26.)
11. More specifically, the inventors state that aluminum and molybdenum
can be present "in the range of greater than 0 atomic percent to less than 2
atomic percent," and that other dopants such as vanadium can be present "in
the range of 0 atomic percent to 8 atomic percent." (417 Application at 10,
¶ 26.)
12. According to the inventors, the crystalline structure of titania can
include one or more of anatase, rutile, brookite, or monoclinic crystalline
forms. (417 Application at 8, ¶ 20.)
13. These crystal structures are those commonly formed by titanium
dioxide, TiO2, and we understand Kutilek to be referring to TiO2 by the term
"titania."
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: September 9, 2013