Chemicals for use in industry, science and photography, adhesives for use in industry; putties and other paste fillers; synthetic silicic acid, more particularly synthetic silicic acid that is produced in a flame hydrolytic process; granulates made of synthetic silicic acid; chemical agents for the production of slip, more particularly chemical agents for the production of slip containing silicon dioxide; chemical agents for the production of black glass, more particularly chemical agents for the production of black glass that is opaque throughout; ceramic compositions for sintering [granules and powders]; ceramic materials in particulate form, especially for use as filtering material; compositions for the manufacture of technical ceramics

Machine tools, 3d-printing machines

Scientific measuring, controlling devices and instruments; reflectors as part of or accessories to lasers [all goods for non-medical purposes]; products made of quartz glass for use in the chemical industry, the electrical industry and the semiconductor industry and for laboratory purposes, namely cuvettes, crucibles, dishes, beakers, bell jars, flanges, combustion boats, catalyst supports; products made of quartz glass for optical devices such as plates, filters, mirror holders; fiber optic cables; semi-finished product for fiber optic cables, especially cores rods for fiber optic cables and cladding cylinders for fiber optic cables; optical fibers [light conducting filaments]; optical lenses; optical glass; mirrors [optics]; optical apparatus and instruments; lenses, mirrors or reflectors, more particularly lenses, mirrors or reflectors made of quartz glass and for use in detectors for determining physical quantities of electromagnetic waves; lenses, mirrors or reflectors, more particularly lenses, mirrors or reflectors made of quartz glass and for use in spectrometers or reflectometers; lenses, mirrors or reflectors, more particularly lenses, mirrors or reflectors made of quartz glass and for use in systems for photolithographic structuring of a photoresist layer, more particularly in systems for photolithographic structuring of a photoresist layer during the production of integrated circuits; lenses, mirrors or reflectors, more particularly lenses, mirrors or reflectors made of quartz glass and for use in vacuum chambers for the modification of surfaces, more particularly for metallizing, hardening, sputtering or plasma etching surfaces, more particularly for LED production; lenses, mirrors or reflectors, more particularly lenses, mirrors or reflectors made of quartz glass and for use in camera systems for optical quality control or for controlling positioning systems, more particularly camera systems for optical quality control or for controlling positioning sy

Surgical, medical, dental and veterinary apparatus and instruments; orthopaedic articles; suture materials; therapeutic and assistive devices adapted for the disabled; therapeutic and prosthetic articles and devices for implantation composed of artificial or synthetic materials, for example, surgical implants composed of artificial materials, artificial breasts, brain pacemakers, biodegradable bone fixation implants; optical fused silica fibers for catheters, for laser light or data transmission into the body via minimal invasive operations

Apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes; lighting devices; lighting systems and illuminants for lighting systems for hardening, cleaning or activating a surface as preparation of further method steps or for modifying a surface structure, all of the aforementioned steps in particularly with ultraviolet (UV) radiation

Unprocessed and semi-processed rubber, guttapercha, gum, mica and substitutes for all these materials; plastics and resins in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes, tubes and hoses, not of metal; insulators for electrical purposes, more particularly insulators for electrical machinery and systems in the semiconductor industry, all of the aforementioned insulators in particular made of ceramic materials or of quartz glass; glass wool, more particularly for thermal insulation

Household or kitchen utensils and containers; cookware and tableware, except forks, knives and spoons; combs and sponges; brushes, except paintbrushes; brush-making materials; articles for cleaning purposes; unworked or semi-worked glass, except building glass; ceramic, glassware, porcelain and earthenware; unworked or semi-worked glass, with the exception of structural glass; glassware, chinaware and earthenware; translucent vitreous glass [semi-finished product, except for construction purposes] as well as semi-finished products made thereof, especially pipes, bars, plates, blocks, rings; synthetic quartz glass [semi-finished product, except for construction purposes] as well as semi-finished products made thereof, especially pipes, bars, plates, blocks, rings; synthetic quartz glass fibers, not for textile purposes; vitreous silica fibers, other than for textile use; synthetic black quartz glass [semi-finished product, except for construction purposes] as well as semi-finished products made thereof, especially pipes, bars, plates, blocks, rings; synthetic opaque quartz glass [semi-finished product, except for construction purposes] as well as semi-finished products made thereof, more especially pipes, bars, plates, blocks, rings; opaque quartz glass fibers, not for textile purposes; black quartz glass bodies that are opaque throughout, preferably for lighting systems or illuminants for lighting systems; ceramic goods, as well as semi-finished products made thereof, especially pipes, bars, plates, blocks, rings (not for building); fused silica as low expansion material for precision positioning

Treatment of quartz glass surfaces; treatment of ceramic surfaces; applying partial opaque reflective coating onto fused silica parts, possibly lamps, windows, tubes, reactor chambers; applying partial coatings onto fused silica parts, especially applying partial coatings onto parts for lamps, windows, tubes or reactor chambers; applying partial reflective coatings onto fused silica parts, especially applying partial reflective coatings onto parts for lamps, windows, tubes or reactor chambers; applying partial opaque reflective coatings onto fused silica parts, especially applying partial opaque reflective coating onto parts for lamps, windows, tubes or reactor chambers; applying a silica coating for protecting metal parts from excessive heat or corrosion; surface treatments for stronger surface adhesion, namely acid structuring of surfaces

Scientific and technological services and research and design relating thereto; industrial analysis and industrial research services; chemical or physical analysis of samples, especially analysis of impurities, analysis of viscosity, analysis of transmission or analysis of reflection properties, analysis of stress induced birefringence, analysis of variation of refractive index of fused silica glasses