Preparation of ozone by electrical discharge

Filing statistics

CPC C01B 2201/00 belongs to the parent subclass C01B, which recorded 208,069 patent applications worldwide between 2013 and 2023. Annual filings grew from 11,850 in 2013 to 24,181 in 2023 (+104%), peaking at 24,407 applications in 2022. The most active applicants in class C01 are CHINESE ACADEMY OF SCIENCES (4,293 applications), LG CHEM (3,317 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (2,219 applications).

Source: EPO PATSTAT, worldwide filings

9 direct subcodes

Child Classifications

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C01B 2201/10 Dischargers used for production of ozone
C01B 2201/20 Electrodes used for obtaining electrical discharge
C01B 2201/30 Dielectrics used in the electrical dischargers
C01B 2201/40 using several dischargers in series
C01B 2201/50 Part of the product being recycled
C01B 2201/60 Feed streams for electrical dischargers
C01B 2201/70 Cooling of the discharger; Means for making cooling unnecessary
C01B 2201/80 Additional processes occurring alongside the electrical discharges, e.g. catalytic processes
C01B 2201/90 Control of the process

Top Applicants

Top 10 applicants by patent filingsfor class C01, 2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 4,293
LG CHEM KR 3,317
BASF (BADISCHE ANILIN & SODA FABRIK) DE 2,219
SINOPEC (CHINA PETROCHEMICAL CORPORATION) 2,154
OMYA INTERNATIONAL CH 1,524
PANASONIC INTELLECTUAL PROPERTY JP 1,362
SAUDI ARABIAN OIL COMPANY SA 1,298
SUMITOMO METAL MINING COMPANY JP 1,286
CENTRAL SOUTH UNIVERSITY 1,243
L'AIR LIQUIDE SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE FR 1,238