CPC Main Group
H03D 1/00 Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence)
6 direct subcodes
Child Classifications
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- H03D 1/02 Details
- H03D 1/08 by means of non-linear two-pole elements (H03D1/22, H03D1/26, H03D1/28 take precedence)
- H03D 1/14 by means of non-linear elements having more than two poles (H03D1/22, H03D1/26, H03D1/28 take precedence)
- H03D 1/22 Homodyne or synchrodyne circuits
- H03D 1/26 by means of transit-time tubes
- H03D 1/28 by deflecting an electron beam in a discharge tube (H03D1/26 takes precedence)
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