CPC Subgroup Additional Only
B01D 2258/02 Other waste gases
Full Title
Sources of waste gases > Other waste gases
10 direct subcodes
Child Classifications
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- B01D 2258/0208 from fuel cells
- B01D 2258/0216 from CVD treatment or semi-conductor manufacturing
- B01D 2258/0225 from chemical or biological warfare
- B01D 2258/0233 from cement factories
- B01D 2258/0241 from glass manufacture plants
- B01D 2258/025 from metallurgy plants
- B01D 2258/0258 from painting equipments or paint drying installations
- B01D 2258/0266 from animal farms
- B01D 2258/0275 from food processing plants or kitchens
- B01D 2258/0283 Flue gases
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