Application of Stephane Dufaure De Lajarte

ALMOND, Judge.

Stephane Dufaure De Lajarte appeals from a decision of the Board of Appeals affirming the examiner’s rejection of all of the claims in appellant’s application 1 for a glass composition.

The rejected claims 5 and 11 read as follows:

“5. Electrically insulating glass having a composition consisting essentially of the following constituents in per cent by weight

Si02 66.8

B2O3

AI2O3 3.0

Fe203 1.6

MnO 0.6

CaO 9

MgO 4

BaO 3

Na20 8

K2O 4

said glass having resistance to perforation equivalent to at least about 36 KV in a plate 500 x 500 x 7 mm., at 200° C., under 50 cycle alternating current.

“11.…