Highly refractive, low-density, phototropic glass
Highly refractive, low-density, phototropic glass
Highly refractive, ThO.sub.2 -free optical glasses having refrac
Highly reinforced refractory concrete with 4-20 volume % steel f
Highly toughened alumina sintered bodies and their...
Highly toughened, sintered mass of zirconia
Highly transparent, edge colored glass
Holder for sealing member
Hollow ceramic microspheres by sol-gel dehydration with improved
Hollow glass spheres
Hollow glass spheres
Hollow microspheres made from dispersed particle compositions an
Hollow microspheres of silica glass and method of manufacture
Hollow proppants and a process for their manufacture
Homogeneous bulky porous ceramic material
Homogeneous bulky porous ceramic material
Homogeneous solid solution material and method of manufacturing
Homogeneous solid solution material and method of manufacturing
Homogenous silicon nitride sintered body
Honeycomb ceramics structure body and method for producing...