U.S. federal trademark · Serial No. 88113847 · Reg. No. 5419765
[ Vitreous silica as a semi-finished product, namely, ingots, tubes, discs, plates, powder, beads, flakes and rings, all for general industrial and further manufacturing use in the electronic industry and the semiconductor industry ]
Quartz; silica stone
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.