PROCESSES AND PRODUCTS
Subclass of:
204 - Chemistry: electrical and wave energy
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
204450000 | Electrophoresis or electro-osmosis processes and electrolyte compositions therefor when not provided for elsewhere | 1298 |
204192100 | Coating, forming or etching by sputtering | 1097 |
204157150 | Processes of treating materials by wave energy | 490 |
204164000 | Electrostatic field or electrical discharge | 194 |
204554000 | Electrical (including simultaneous electrical and magnetic) separation or purification of liquid or magnetic treatment of liquid (other than separation) | 142 |
204155000 | Electrical, or wave energy in magnetic field | 42 |
204192380 | Vacuum arc discharge coating | 32 |