CPC Subgroup
B22D 17/02 Hot chamber machines, i.e. with heated press chamber in which metal is melted
Full Title
Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure > Hot chamber machines, i.e. with heated press chamber in which metal is melted
2 direct subcodes
Child Classifications
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- B22D 17/04 Plunger machines
- B22D 17/06 Air injection machines
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