CPC Definition - Subclass C03B
This place does not cover:
Preparation of finely divided silica | |
Changing the surface of the glass ribbon by chemical methods | |
Chemical aspects of glass | |
Refining agents | |
Chemical aspects of hollow, porous, sintered or foamed beads | |
Beads composition | |
Surface treatment of glass by coating with glass | |
Surface treatment of fibres or filaments from glass, minerals or wools, sizing of the fibres | |
Coating of the fibre during the drawing process | |
Optical fibres per se with polarisation maintaining properties in light guides | |
Cutting or severing of light guides | |
Fusion-splicing of light guides | |
Treatment of light guides to shape optical elements |
Attention is drawn to the following places, which may be of interest for search:
Syringes | |
Devices for reactant delivery in general | |
Containers or dishes for laboratory use, e.g. laboratory glassware | |
Nozzles | |
Disposal or transformation of solid waste in general | |
Machines or processes for grinding or polishing glass | |
Molding plastics around a core using a cross-head annular extrusion nozzle | |
Extrusion presses in general | |
Windows, windscreens for vehicles | |
Windows, doors for airplanes | |
Glass containers, e.g. bottles, ampoules, jars | |
Conveying systems for fragile sheets, e.g. glass | |
Hand tools for cutting ampoules | |
Crucibles for supporting the melt | |
Bi-component fibres | |
Yarns or threads made from glass | |
Woven fabrics | |
Non-woven fabrics | |
Building elements of glass or other transparent material | |
Doors, windows | |
Thermal insulation arrangements using fillers, e.g. slag wool | |
Globes, bowls, cover glasses | |
Brick shapes in general | |
Optical glass, lens | |
Programme-control system | |
Treatment of radioactive waste | |
Apparatus specially adapted for the manufacture of electric discharge tubes, discharge lamps |
The IPC group C03B8/00 is not used in CPC. Depending on the process used, production of glass may be classified in the following CPC groups:
C03B8/00 is classified in C03B 19/00, C03B 37/00
C03B8/02 is classified in C03B 19/1065, C03B 19/12, C03B 37/011, C03B 37/016
C03B8/04 is classified in C03B 19/106, C03B 19/14, C03B 37/014
In this place, the following terms or expressions are used with the meaning indicated:
Annealing | Process of slowly cooling glass to relieve internal stresses after it was formed |
Cullet | Scraps of broken or waste glass for remelting |
Debiteuse | Clay block floating upon molten glass in a tank furnace and containing a long slot that shapes glass into a sheet as it is drawn through it |
Gob | Lump of molten glass used to make a piece of glassware |
Mineral wool | Inorganic fibrous material made from molten glass |
Slag wool | Mineral wool made from blast-furnace slag |
Tempering | Process of heating glass above its annealing point and then rapidly cooling it. |
In patent documents, the following abbreviations are often used:
Mineral wool, slag wool | Rock wool |
Tempered | Toughened |
This place covers:
Preparation of raw mixtures used in manufacturing glass, mineral or slag wool (batches), e.g. mixing, pelletizing
The chemical composition of the batch is classed in C03C 1/00.
This place does not cover:
Chemical compositions |
This place covers:
Processes and devices concerning the addition of glass-making ingredients into the melting furnaces
This place covers:
- Melting processes of glass-making ingredients in furnaces
- Furnaces used for glass manufacture
Attention is drawn to the following places, which may be of interest for search:
Heating processes to be classified in C03B 2211/00
This place covers:
Waste materials melted in furnaces to form glass, e.g. recycling of glass to produce new glass
This place covers:
- Means for taking off charges of molten glass
- Forehearths, i.e. feeder channels
- Feeder spouts, e.g. gob feeders, pneumatic feeders, spout blocks
- Suction, scoop feeders
This place covers:
Shaping of glass by blowing processes with production of hollow glass articles:
- with blow pipes, in gob feeder machines, in I.S. machines (individual section machines), past mould machines, moulds, blow heads
This place does not cover:
Shaping molten glass by a press-blow process | |
Re-forming shaped glass | |
Re-heating the preformed glass | |
Transporting the preformed or pressed glass during its manufacture |
Material and mould characteristics to be also classed in C03B 2215/00
This place covers:
- Rolling of profiled glass articles, patterned and non-patterned sheets, corrugated sheets
- Construction of glass rollers
- Auxiliary means for rolling glass, e.g gripping devices, sheet supports, roller beds for the rolled plate glass
This place does not cover:
re-forming shaped glass by rolling |
This place covers:
Drawing glass upwardly from the melt processes with production of drawing glass sheets, tubes, cylinders
This place covers:
Forming glass processes by flowing out with formation of glass coated with coloured layers, formation of tubes, glass sheets
This place covers:
Shaping glass processes in contact with the surface of a liquid, i.e. float bath, with formation of sheets
This place does not cover:
Manufacture or treatment of flakes, fibres or filaments from softened glass, minerals or slags | |
Crucibles for supporting the melt in single-crystal growth by pulling form a melt; crucibles for the production of after treatment of single crystals |
Attention is drawn to the following places, which may be of interest for search:
Mold made of carbon ceramic | |
Carbon electrodes |
Glass characteristics to be also classed in C03B 2201/00
Glass deposition burners to be also classed in C03B 2207/00
In this place, the following terms or expressions are used with the meaning indicated:
Liquid phase reaction | Sol-gel process |
This place does not cover:
Shaping glass by progressive fusion of powdered glass | |
Shaping glass by sintering for the production of quartz or fused silica articles | |
Forming solid beads by chemical vapour deposition | |
Shaping glass by liquid-phase reaction | |
Shaping glass by gas or vapour phase reaction processes | |
Manufacture or treatment of flakes, fibres or filaments from softened glass, minerals or slags |
This place covers:
The cutting, the punching out, the burning-off, of glass which is in a plastic state, meaning its temperature is around softening point. There is no material ablation
This place covers:
The re-forming of shaped glass which has already been formed such as by pressing, centrifuging, rolling, bending, blowing, etc.
This place does not cover:
Re-forming fibres or filaments | |
Uniting glass pieces with the addition of material |
C03B 23/20 only concerns uniting glass without any material addition and/or reshaping.
Fabrics, felts or loose covers for preventing direct contact between the hot glass and means used to shape it are classed in C03B 40/005
Details of transporting means are also classified in C03B 2225/00
This place covers:
The annealing of glass products in discontinuous or continuous way
This place covers:
Tempering by using heat of sublimation of solid particles, by heat treatment, by absorbing heat radiated from the glass product, using liquid or gas
This place does not cover:
Tempering by using heat of sublimation of solid particles | |
Tempering by absorbing heat radiated from the glass product | |
Treatment of glass by performing ion exchange between alkali ions (chemical strengthening of glass) |
This place covers:
Glass heating furnaces for reheating glass products in a discontinuous way or continuous way for softening or fusing their surfaces; for fire-polishing
This place does not cover:
Furnaces |
This place does not cover:
Methods of shaping glass | |
Annealing glass products | |
Tempering or quenching glass products | |
Reheating glass products for softening or fusing their surface | |
Manufacture of rippled or crackled glass | |
Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals or slags |
This place covers:
The "traditional" cutting of glass, meaning "without ablation of material"
Making a hole in cold glass sheet with material ablation is classified in B62D
Punching, embossing, making hole while glass is in plastic state ("hot" glass) with no material ablation is classified in C03B 21/00
This place does not cover:
Severing glass fibres | |
Boring of glass | |
Sawing glass (e.g. cutting glass by ablation) |
This place does not cover:
Severing cooled glass by fusing , using a focussed radiation beam, e.g. laser beam | |
Tubes, rod or hollows glass products obtained by fusing cooled glass, using a focussed radiation beam, e.g. laser beam | |
Severing cooled glass by thermal shock using a focussed radiation beam, e.g. laser beam | |
Tubes, rod or hollows glass products obtained by thermal shock of cooled glass, using a focussed radiation beam, e.g. laser |
This place does not cover:
Severing cooled glass by fusing, using a focussed radiation beam, e.g. laser beam | |
Tubes, rod or hollows glass products obtained by fusing cooled glass, using a focussed radiation beam, e.g. laser beam | |
Severing cooled glass by thermal shock using a focussed radiation beam, e.g. laser beam | |
Tubes, rod or hollows glass products obtained by thermal shock of cooled glass, using a focussed radiation beam, e.g. laser |
Groups C03B 33/082, C03B 33/0855, C03B 33/091, C03B 33/093 and C03B 33/0955 take precedence over C03B 33/102.
Lasers beam as such are classified in B23K 26/00.
This place covers:
The transport of glass during its manufacture (C03B processes), meaning that the glass is hot.
This place does not cover:
Conveying systems for transport of cold glass sheets e.g. glass |
Details of transporting means are also classified in C03B 2225/00
This place covers:
- Manufacture of flakes
- Manufacture of glass fibres or filaments by e.g. manufacture of preforms for drawing fibres or filaments, by drawing or extruding, by using centrifugal force, by blasting molten glass
Material characteristics to be also classed in C03B 2201/00
Fibre characteristics to be also classed in C03B 2203/00
Deposition burners to be also classed in C03B 2207/00
Fibre drawing characteristics to be also classed in C03B 2205/00
This group is only used if not already in C03B
Attention is drawn to the following places, which may be of interest for search:
Carbon, e.g. diamond, graphite or amorphous carbon |