Glass for optical fiber

Glass for optical fibers

Glass for photoetching mask

Glass for press molding

Glass for press molding, and lens

Glass for projection cathode ray tube faceplate

Glass for rigid disk substrates

Glass for rigid disk substrates

Glass for substrate and glass substrate

Glass for thermal shock-resistant beverage containers

Glass for tungsten-halogen lamps

Glass for use as tungsten-halogen lamp envelopes

Glass for use in monochromatic colored light emitting cathode ra

Glass for wavelength division multiplexing optical filter

Glass frit

Glass frit and sealing method for element using the same

Glass frit composition

Glass frit of diopside crystal precursors

Glass frit useful for the preparation of glass bubbles, and glas

Glass frits containing WO.sub.3 or MoO.sub.3 in RuO.sub.2 -based