Appeal 2007-1940
Application 10/362,942
Claims 21 and 23 illustrate Appellants’ invention of a glass ceramic
mass, and are representative of the claims on appeal:
21. Glass ceramic mass comprising:
at least one oxide ceramic, containing barium, titanium and at least
one rare earth metal Rek, and
at least one glass material, containing at least one oxide of boron, at
least one oxide of at least one tetravalent metal Me4+ selected from the
group consisting of titanium, zirconium and hafnium, and at least one oxide
of at least one rare earth metal Reg,
said glass ceramic mass having:
a permittivity which is selected from the range between 15 inclusive
and 80 inclusive,
a quality which is selected from the range between 300 inclusive and
5000 inclusive, and
a Tf value which is selected from the range between -20 ppm/K
inclusive and +20 ppm/K inclusive.
23. Glass ceramic mass comprising:
at least one oxide ceramic, containing barium, titanium and at least
one rare earth metal Rek, and
at least one glass material, containing at least one oxide of boron, at
least one oxide of at least one rare earth metal Reg, and
at least one oxide of at least one pentavalent metal M5+ selected from
the group consisting of vanadium, niobium and tantalum,
said glass ceramic mass having:
a permittivity which is selected from the range between 15 inclusive
and 80 inclusive,
a quality which is selected from the range between 300 inclusive and
5000 inclusive, and
a Tf value which is selected from the range between -20 ppm/K
inclusive and +20 ppm/K inclusive.
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Last modified: September 9, 2013