H01M 50/489 Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
Full Title
Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells > Separators; Membranes; Diaphragms; Spacing elements inside cells > Separators, membranes, diaphragms or spacing elements inside the cells, characterised by their physical properties, e.g. swelling degree, hydrophilicity or shut down properties
Filing statistics
CPC H01M 50/489 belongs to the parent subclass H01M, which recorded 641,865 patent applications worldwide between 2013 and 2023. Annual filings grew from 33,251 in 2013 to 96,378 in 2023 (+190%). The most active applicants in class H01 are SAMSUNG ELECTRONICS COMPANY (37,897 applications), TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (36,116 applications) and APPLIED MATERIALS (21,640 applications).
Source: EPO PATSTAT, worldwide filings
3 direct subcodes
Child Classifications
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- H01M 50/491 Porosity
- H01M 50/494 Tensile strength
- H01M 50/497 Ionic conductivity
Top Applicants
Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 37,897
- TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
- APPLIED MATERIALS US 21,640
- LG ENERGY SOLUTION KR 20,770
- LG CHEM KR 19,835
- TOKYO ELECTRON JP 18,519
- ROBERT BOSCH DE 14,595
- INTEL CORPORATION US 13,580
- MURATA MANUFACTURING COMPANY JP 12,151
- SAMSUNG SDI COMPANY KR 12,080