• All sections
• G - Physics
• G01N - Investigating or analysing materials by determining their chemical or physical properties
• G01N 27/64 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber

Patent holdings for IPC class G01N 27/64

Total number of patents in this class: 438

10-year publication summary

Principal owners for this class