CPC Subgroup Additional Only
H03B 2200/003 Circuit elements of oscillators
Full Title
Indexing scheme relating to details of oscillators covered by H03B > Circuit elements of oscillators
13 direct subcodes
Child Classifications
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- H03B 2200/0032 including a device with a Schottky junction
- H03B 2200/0034 including a buffer amplifier
- H03B 2200/0036 including an emitter or source coupled transistor pair or a long tail pair
- H03B 2200/0038 including a current mirror
- H03B 2200/004 including a variable capacitance, e.g. a varicap, a varactor or a variable capacitance of a diode or transistor
- H03B 2200/0044 including optical elements, e.g. optical injection locking
- H03B 2200/0046 including measures to switch the gain of an amplifier
- H03B 2200/0048 including measures to switch the frequency band, e.g. by harmonic selection
- H03B 2200/005 including measures to switch a capacitor
- H03B 2200/0052 including measures to switch the feedback circuit
- H03B 2200/0054 including measures to switch a filter, e.g. for frequency tuning or for harmonic selection
- H03B 2200/0056 including a diode used for switching
- H03B 2200/0058 with particular transconductance characteristics, e.g. an operational transconductance amplifier
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