Moulds or cores; Moulding processes

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: CASTING; POWDER METALLURGY
Subclass:: FOUNDRY MOULDING

Filing statistics

IPC B22C 9/00 belongs to the parent subclass B22C, which recorded 67,055 patent applications worldwide between 2013 and 2023. Annual filings grew from 3,939 in 2013 to 6,568 in 2023 (+67%), peaking at 8,429 applications in 2020. The most active applicants in class B22 are GE (GENERAL ELECTRIC COMPANY) (1,719 applications), CHINESE ACADEMY OF SCIENCES (1,489 applications) and POSCO (POHANG IRON AND STEEL COMPANY) (1,248 applications).

Source: EPO PATSTAT, worldwide filings

Related Keywords

MOULD(S) for casting metal

8 direct subcodes

Child Classifications

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B22C 9/02 Sand moulds or like moulds for shaped castings
B22C 9/06 Permanent moulds for shaped castings
B22C 9/08 Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
B22C 9/1 Cores; Manufacture or installation of cores
B22C 9/12 Treating moulds or cores, e.g. drying, hardening
B22C 9/18 Finishing
B22C 9/2 Stack moulds, i.e. arrangement of multiple moulds or flasks
B22C 9/22 Moulds for peculiarly-shaped castings

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