CPC Main Group Additional Only
H04R 2410/00 Microphones
4 direct subcodes
Child Classifications
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- H04R 2410/01 Noise reduction using microphones having different directional characteristics
- H04R 2410/03 Reduction of intrinsic noise in microphones
- H04R 2410/05 Noise reduction with a separate noise microphone
- H04R 2410/07 Mechanical or electrical reduction of wind noise generated by wind passing a microphone
Top Applicants
Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT
- HUAWEI TECHNOLOGIES COMPANY CN 101,476
- QUALCOMM US 101,139
- SAMSUNG ELECTRONICS COMPANY KR 96,655
- TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 57,744
- LG ELECTRONICS KR 55,253
- HUAWEI TECHNOLOGIES COMPANY 54,181
- SONY CORPORATION JP 35,309
- ZTE CORPORATION CN 32,950
- INTEL CORPORATION US 27,533
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION CN 27,498