U.S. federal trademark · Serial No. 85287699 · Reg. No. 5419766
non-metal, vitreous silica crucibles for melting a polycrystalline silicon material and forming silicon single crystal; non-metal, vitreous silica crucibles for melting a polycrystalline silicon material and forming polycrystalline silicon; all of the foregoing are non-laboratory equipment and non-furnace parts or apparatus; all of the foregoing are made in significant part of quartz
[ 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; all of the foregoing are made in significant part of quartz ]
[ quartz; silica stone made in significant part of quartz ]
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.