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IPC Subgroup
B01L 7/02

Water baths; Sand baths; Air baths

Introduced: September 1968

Last revised: January 2006

Full Title

Heating or cooling apparatus; Heat insulating devices > Water baths; Sand baths; Air baths

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Subclass:
CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE

Filing statistics

IPC B01L 7/02 belongs to the parent subclass B01L, which recorded 131,341 patent applications worldwide between 2013 and 2023. Annual filings grew from 5,347 in 2013 to 14,407 in 2023 (+169%), peaking at 17,377 applications in 2020. 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

air, sand or water BATHS for laboratory useSAND baths for laboratory useWASH baths for laboratory use

Top Applicants

Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 16,893
  2. CHINESE ACADEMY OF SCIENCES 11,733
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 3,898
  4. LG CHEM KR 3,367
  5. PETROCHINA COMPANY 3,224
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,042
  7. ZHEJIANG UNIVERSITY 2,890
  8. MANN + HUMMEL DE 2,740
  9. JOHNSON MATTHEY GB 2,534
  10. SAUDI ARABIAN OIL COMPANY SA 2,527