Highly prefractive, low dispersion optical glass suitable for mu

Highly refractive optical glass with refractive indices >1.83

Highly refractive, low dispersion, low density optical glass sui

Highly refractive, low-density, phototropic glass

Highly refractive, low-density, phototropic glass

Highly refractive, ThO.sub.2 -free optical glasses having refrac

Highly transparent, edge colored glass

Hollow glass spheres

Hollow glass spheres

Hollow microspheres of silica glass and method of manufacture

Hollow proppants and a process for their manufacture

Hybrid ceramic composition and process for its manufacture

Hybrid package, glass ceramic substrate for the hybrid package,

Hydrogen storage composition and method