Electrophotography
Patent class list (only not empty are listed)
Deeper subclasses:
Class / Patent application number | Description | Number of patent applications / Date published |
---|---|---|
399130000 | IMAGE FORMATION | 5673 |
399038000 | CONTROL OF ELECTROPHOTOGRAPHY PROCESS | 3056 |
399107000 | HAVING PARTICULAR STRUCTURE | 1984 |
399009000 | DIAGNOSTICS | 1540 |
399091000 | INTERNAL MACHINE ENVIRONMENT | 1086 |
399361000 | DOCUMENT HANDLING | 916 |
399075000 | MACHINE OPERATION | 725 |
399343000 | CLEANING OF IMAGING SURFACE | 483 |
399127000 | SUPPLEMENTAL ELECTROPHOTOGRAPHIC PROCESS | 51 |
399008000 | REMOTE MONITORING | 42 |
399001000 | COMBINED WITH DIVERSE SUBJECT MATTER | 9 |