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IPC Main Group
B01L 5/00

Gas handling apparatus

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 LABORATORY APPARATUS FOR GENERAL USE

Additional Content

Limiting references

Gas jars or cylinders Cold traps or cold baffles

Application references

Separation of gases or vapours

Related Keywords

laboratory apparatus for handling GAS(ES)

2 direct subcodes

Child Classifications

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  • B01L 5/02 Gas collection apparatus, e.g. by bubbling under water
  • B01L 5/04 Gas washing apparatus, e.g. by bubbling

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