• All sections
• H - Electricity
• H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
• H01M 4/52 - Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron

Patent holdings for IPC class H01M 4/52

Total number of patents in this class: 1157

10-year publication summary

Principal owners for this class