IPC Main Group
B01J 3/00 Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- Subclass:
- CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
Filing statistics
IPC B01J 3/00 belongs to the parent subclass B01J, which recorded 498,869 patent applications worldwide between 2013 and 2023. Annual filings grew from 29,790 in 2013 to 56,315 in 2023 (+89%). The most active applicants in class B01 are SINOPEC (CHINA PETROCHEMICAL CORPORATION) (16,893 applications), CHINESE ACADEMY OF SCIENCES (11,733 applications) and BASF (BADISCHE ANILIN & SODA FABRIK) (3,898 applications).
Source: EPO PATSTAT, worldwide filings
Related Keywords
AUTOCLAVESDIGESTERS for chemical or physical processesPRESSURE vessels for chemical or physical processessub-atmospheric or super-atmospheric PRESSURE vessels for chemical and physical processes
4 direct subcodes
Child Classifications
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- B01J 3/02 Feed or outlet devices therefor
- B01J 3/03 Pressure vessels, or vacuum vessels, having closure members or seals specially adapted therefor
- B01J 3/04 Pressure vessels, e.g. autoclaves
- B01J 3/06 Processes using ultra-high pressure, e.g. for the formation of diamonds; Apparatus therefor, e.g. moulds or dies
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
- CHINESE ACADEMY OF SCIENCES 11,733
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
- LG CHEM KR 3,367
- PETROCHINA COMPANY 3,224
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
- ZHEJIANG UNIVERSITY 2,890
- MANN + HUMMEL DE 2,740
- JOHNSON MATTHEY GB 2,534
- SAUDI ARABIAN OIL COMPANY SA 2,527