• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F25J - Liquefaction, solidification, or separation of gases or gaseous mixtures by pressure and cold treatment
• F25J 3/02 - Processes or apparatus for separating the constituents of gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream

Patent holdings for IPC class F25J 3/02

Total number of patents in this class: 1375

10-year publication summary

Principal owners for this class