CPC Subgroup Additional Only
B01L 2400/0677 phase change valves; Meltable, freezing, dissolvable plugs; Destructible barriers
Full Title
Moving or stopping fluids > Valves, specific forms thereof > phase change valves; Meltable, freezing, dissolvable plugs; Destructible barriers
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- B01L 2400/0683 mechanically breaking a wall or membrane within a channel or chamber
Top Applicants
Top 10 applicants by patent filingsfor class B01, 2013–2023, worldwide · Source: EPO PATSTAT
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 10,345
- CHINESE ACADEMY OF SCIENCES 8,352
- BASF (BADISCHE ANILIN & SODA FABRIK) DE 5,134
- LG CHEM KR 4,290
- SAUDI ARABIAN OIL COMPANY SA 3,444
- IFPEN (IFP ENERGIES NOUVELLES) FR 3,417
- DOW GLOBAL TECHNOLOGIES US 3,195
- MANN + HUMMEL DE 2,822
- JOHNSON MATTHEY GB 2,802
- UNIVERSAL OIL PRODUCTS COMPANY (UOP) US 2,737