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Abrasive powders made of ceramics for use in polishing a wide variety of goods; abrasive materials, namely, particles of ceramics in powder, grains and pellet form for surface treating of metal, glass, plastic, wood, crystal, quarts, semiconductor, stone objects, sapphire substrate, and/or silicon carbide substrates

[ Blank hard disks for computers; ] high performance liquid chromatography columns; [ instruments, namely, eluent degassing apparatus for high performance liquid chromatography; refractive index detector for detecting compounds having no UV absorption such as sugars, fatty acids and esters and for detecting compounds dissolved in eluent having UV absorption; ion chromatography instruments, namely, conductivity detectors; ] artificial graphite electrodes for electric steel making furnaces; [ heat sinks for use with semiconductor devices; heat sinks for use with transistors; heat sinks for use with integrated circuits; blank electronic storage media; blank digital storage media; ] blank magnetic storage media; [ parts for blank magnetic discs, namely, aluminum alloy plates; drum units for printers for use in copying, printing, scanning, video capture and/or transmitting documents and images, namely, aluminum cylinders for photosensitive drums for printers and aluminum cylinders for organic photosensitive coating drums; parts for video cassette recorders, namely, cylinders for use in video cassette recorders; electroluminescence device, namely, organic electroluminescence diodes; capacitors; ] light emitting diode chips; compound semiconductor wafers, namely, epitaxial wafers for light emitting diodes; silicon carbide epitaxial wafers [ ; materials of fuel cell, namely, separators for fuel cell; anodes; cathodes ]