CPC Subgroup Additional Only
B01D 2239/02 Types of fibres, filaments or particles, self-supporting or supported materials
Full Title
Aspects relating to filtering material for liquid or gaseous fluids > Types of fibres, filaments or particles, self-supporting or supported materials
9 direct subcodes
Child Classifications
Navigate with arrow keys, Enter to open
- B01D 2239/0208 Single-component fibres
- B01D 2239/0216 Bicomponent or multicomponent fibres
- B01D 2239/0241 comprising electrically conductive fibres or particles
- B01D 2239/025 comprising nanofibres
- B01D 2239/0258 comprising nanoparticles
- B01D 2239/0266 comprising biodegradable or bio-soluble polymers
- B01D 2239/0275 comprising biologically produced plastics, e.g. bioplastics
- B01D 2239/0283 comprising filter materials made from waste or recycled materials
- B01D 2239/0291 comprising swelling polymers
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
- CHINESE ACADEMY OF SCIENCES 8,352
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
- LG CHEM KR 4,290
- SAUDI ARABIAN OIL COMPANY SA 3,444
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
- DOW GLOBAL TECHNOLOGIES US 3,195
- MANN + HUMMEL DE 2,822
- JOHNSON MATTHEY GB 2,802
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737