Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells

Introduced: July 1974

Last revised: January 2006

Classification Context

Section:: CHEMISTRY; METALLURGY
Class:: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
Subclass:: PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR

Filing statistics

IPC C25C 7/00 belongs to the parent subclass C25C, which recorded 24,695 patent applications worldwide between 2013 and 2023. Annual filings grew from 1,905 in 2013 to 2,711 in 2023 (+42%). The most active applicants in class C25 are CHINESE ACADEMY OF SCIENCES (1,797 applications), EBARA CORPORATION (729 applications) and CENTRAL SOUTH UNIVERSITY (650 applications).

Source: EPO PATSTAT, worldwide filings

3 direct subcodes

Child Classifications

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C25C 7/02 Electrodes; Connections thereof
C25C 7/04 Diaphragms; Spacing elements
C25C 7/06 Operating or servicing

Top Applicants

Top 10 applicants by patent filingsfor class C25, 2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 1,797
EBARA CORPORATION JP 729
CENTRAL SOUTH UNIVERSITY 650
INDUSTRIE DE NORA IT 641
ROBERT BOSCH DE 600
JFE STEEL JP 593
KMUST (KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY) 553
SIEMENS DE 536
CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 525
JX NIPPON MINING & METALS CORPORATION 499