C25B ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)
Introduced: July 1974
Description
C25B covers electrolytic and electrophoretic processes for synthesizing inorganic and organic compounds, as well as non-metallic substances, along with the specialized equipment used in these operations. This includes electrochemical production of chemicals such as halogens, hydrogen, oxygen, acids, bases, salts, and various industrial compounds through direct electrochemical conversion. The classification also encompasses electrophoretic deposition and separation techniques for preparing non-metallic materials. Related electrorefining and electrowinning of metals are excluded and fall under C25C instead.
Title
Titles differ between systems:
IPC: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
CPC: ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)
Full Title
Full titles differ between systems:
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON- METALS; APPARATUS THEREFOR
ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR (anodic or cathodic protection C23F13/00; single-crystal growth C30B)
Additional Content IPC
Treatment of water, waste water or sewage by electrochemical means, e.g. electrolysis electrodes therefor Separation or purification of peptides, e.g. of proteins, by electrophoresis Inhibiting corrosion of metals by anodic or cathodic protection Single crystal growth
IPC and CPC are identically structured here. All 8 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 1974.
Child Classifications
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- C25B 1/00 Electrolytic production of inorganic compounds or non-metals since 1974 IPC+CPC Available in IPC and CPC
- C25B 11/00 Electrodes; Manufacture thereof not otherwise provided for since 1974 IPC+CPC Available in IPC and CPC
- C25B 5/00 Electrogenerative processes, i.e. processes for producing compounds in which electricity is generated simultaneously since 1974 IPC+CPC Available in IPC and CPC
- C25B 7/00 Electrophoretic production of compounds or non-metals (separation or purification of peptides, e.g. of proteins, by electrophoresis C07K1/26) since 1974 IPC+CPC Available in IPC and CPC
- C25B 9/00 Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features since 1974 +1 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
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
Top Applicants (CPC)
Class C25,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 1,393
- JFE STEEL JP 914
- EBARA CORPORATION JP 738
- INDUSTRIE DE NORA IT 674
- JX NIPPON MINING & METALS CORPORATION JP 652
- NIPPON STEEL CORPORATION JP 633
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 630
- ROBERT BOSCH DE 626
- SIEMENS DE 587
- ATOTECH DEUTSCHLAND DE 561