DIFF Main Group
B22D 18/00 Pressure casting; Vacuum casting (B22D17/00 takes precedence; treating the metal in the mould by using pressure or vacuum B22D27/00)
Introduced: January 1980
Title
Titles differ between systems:
IPC: Pressure casting; Vacuum casting
CPC: Pressure casting; Vacuum casting (B22D17/00 takes precedence; treating the metal in the mould by using pressure or vacuum B22D27/00)
Full Title
Full titles differ between systems:
IPC:
Pressure casting; Vacuum casting
CPC:
Pressure casting; Vacuum casting (B22D17/00 takes precedence; treating the metal in the mould by using pressure or vacuum B22D27/00)
IPC and CPC are identically structured here. All 4 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1980.
Child Classifications
Navigate with arrow keys, Enter to open
- B22D 18/02 Pressure casting making use of mechanical pressure devices, e.g. cast-forging (B22D18/04 takes precedence) since 1980 IPC+CPC Available in IPC and CPC
- B22D 18/04 Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould since 1980 IPC+CPC Available in IPC and CPC
- B22D 18/06 Vacuum casting, i.e. making use of vacuum to fill the mould since 1980 IPC+CPC Available in IPC and CPC
- B22D 18/08 Controlling, supervising, e.g. for safety reasons (controlling or regulating in general G05) since 1980 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
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