CPC Subgroup
B22C 15/23 Compacting by gas pressure or vacuum
Full Title
Moulding machines characterised by the compacting mechanism; Accessories therefor > Compacting by gas pressure or vacuum
2 direct subcodes
Child Classifications
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- B22C 15/24 involving blowing devices in which the mould material is supplied in the form of loose particles
- B22C 15/26 involving propulsion devices in which the mould material is supplied in the shape of a compacted column or the like
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