B22C FOUNDRY MOULDING (moulding refractory materials in general B28B)
Description
B22C covers the equipment, processes, and techniques used to produce foundry moulds for metal casting. This includes mould making methods (such as sand moulding, shell moulding, and investment casting), mould materials preparation, pattern equipment, and apparatus for assembling and finishing moulds. The classification encompasses both manual and mechanized moulding operations, as well as related processes like mould drying, venting, and core making. Adjacent classes address metal casting itself (B22D) and specific casting techniques, while B22C focuses specifically on the mould fabrication stage that precedes the actual metal pouring.
13 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B22C 1/00 Compositions of refractory mould or core materials; Grain structures thereof (refractory materials in general C04B35/00); Chemical or physical features in the formation or manufacture of moulds
- B22C 11/00 Moulding machines characterised by the relative arrangement of the parts of same
- B22C 13/00 Moulding machines for making moulds or cores of particular shapes
- B22C 15/00 Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C 17/00 Moulding machines characterised by the mechanism for separating the pattern from the mould or for turning over the flask or the pattern plate
- B22C 19/00 Components or accessories for moulding machines
- B22C 21/00 Flasks; Accessories therefor (stripping plates B22C17/06)
- B22C 23/00 Tools; Devices not mentioned before for moulding
- B22C 25/00 Foundry moulding plants (for preparing mould materials B22C5/18; in combination with casting plants B22D47/02)
- B22C 3/00 Selection of compositions for coating the surfaces of moulds, cores, or patterns
- B22C 5/00 Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose (of general applicability, see the relevant places, e.g. for material with water-setting properties B28C)
- B22C 7/00 Patterns; Manufacture thereof so far as not provided for in other classes
- B22C 9/00 Moulds or cores (uniquely adapted to particular casting processes B22D); Moulding processes
Top Applicants
Top 10 applicants by patent filingsfor class B22, 2013–2023, worldwide · Source: EPO PATSTAT
- GE (GENERAL ELECTRIC COMPANY) US 2,157
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 1,633
- SIEMENS DE 1,267
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,124
- CHINESE ACADEMY OF SCIENCES 1,040
- UNITED TECHNOLOGIES CORPORATION (UTC) US 1,015
- JFE STEEL JP 884
- CENTRAL SOUTH UNIVERSITY 810
- HITACHI METALS JP 641
- SINTOKOGIO JP 624