CPC Subgroup Additional Only
H03F 2200/381 An active variable resistor, e.g. controlled transistor, being coupled in the output circuit of an amplifier to control the output
Full Title
Indexing scheme relating to amplifiers > An active variable resistor, e.g. controlled transistor, being coupled in the output circuit of an amplifier to control the output
Top Applicants
Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 7,293
- QUALCOMM US 7,085
- MURATA MANUFACTURING COMPANY JP 5,982
- HUAWEI TECHNOLOGIES COMPANY CN 4,641
- INTEL CORPORATION US 3,863
- TEXAS INSTRUMENTS US 3,409
- MURATA MANUFACTURING COMPANY 2,874
- SK HYNIX KR 2,644
- SKYWORKS SOLUTIONS US 2,545
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,437