IPC Subgroup
B22D 17/02 Hot chamber machines, i.e. with heated press chamber in which metal is melted
Introduced: September 1968
Last revised: January 2006
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
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- CASTING; POWDER METALLURGY
- Subclass:
- CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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 1,719
- CHINESE ACADEMY OF SCIENCES 1,489
- POSCO (POHANG IRON AND STEEL COMPANY) KR 1,248
- TOYOTA MOTOR CORPORATION 1,043
- SIEMENS DE 1,028
- CENTRAL SOUTH UNIVERSITY 959
- HEWLETT-PACKARD DEVELOPMENT COMPANY US 891
- UNITED TECHNOLOGIES CORPORATION (UTC) US 786
- UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 769
- JFE STEEL JP 761