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CPC Subclass Not Allocatable
B01B

BOILING; BOILING APPARATUS

Description

B01B covers apparatus and methods for boiling liquids in industrial, laboratory, and chemical processing contexts. This subclass encompasses boiling vessels, kettles, stills, evaporators, and associated heat transfer equipment designed to facilitate phase change from liquid to vapor. The classification includes systems for controlling boiling conditions, such as heating methods, pressure regulation, and vapor separation, but excludes specialized boiling applications integral to distillation (B01D) or specific chemical synthesis processes classified elsewhere.

1 direct subcode

Child Classifications

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Top Applicants

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

  1. SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
  2. CHINESE ACADEMY OF SCIENCES 8,352
  3. BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
  4. LG CHEM KR 4,290
  5. SAUDI ARABIAN OIL COMPANY SA 3,444
  6. IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
  7. DOW GLOBAL TECHNOLOGIES US 3,195
  8. MANN + HUMMEL DE 2,822
  9. JOHNSON MATTHEY GB 2,802
  10. UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737