Equipment for conveying molten metal into beds or moulds

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: PERFORMING OPERATIONS; TRANSPORTING
Class:: CASTING; POWDER METALLURGY
Subclass:: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES

Filing statistics

IPC B22D 35/00 belongs to the parent subclass B22D, which recorded 144,032 patent applications worldwide between 2013 and 2023. Annual filings grew from 8,344 in 2013 to 16,940 in 2023 (+103%), peaking at 17,691 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

3 direct subcodes

Child Classifications

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B22D 35/02 into beds
B22D 35/04 into moulds, e.g. base plates, runners
B22D 35/06 Heating or cooling equipment

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