IPC Subgroup
H03K 19/2 characterised by logic function, e.g. AND, OR, NOR, NOT circuits
Introduced: September 1968
Last revised: January 2006
Full Title
Logic circuits, i.e. having at least two inputs acting on one output; Inverting circuits > characterised by logic function, e.g. AND, OR, NOR, NOT circuits
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRONIC CIRCUITRY
- Subclass:
- PULSE TECHNIQUE
2 direct subcodes
Child Classifications
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- H03K 19/21 EXCLUSIVE-OR circuits, i.e. giving output if input signal exists at only one input; COINCIDENCE circuits, i.e. giving output only if all input signals are identical
- H03K 19/23 Majority or minority circuits, i.e. giving output having the state of the majority or the minority of the inputs
Top Applicants
Top 10 applicants by patent filingsfor class H03, 2013–2023, worldwide · Source: EPO PATSTAT
- QUALCOMM US 5,625
- SAMSUNG ELECTRONICS COMPANY KR 5,496
- MURATA MANUFACTURING COMPANY JP 5,478
- HUAWEI TECHNOLOGIES COMPANY CN 3,383
- INTEL CORPORATION US 3,091
- TEXAS INSTRUMENTS US 3,070
- MURATA MANUFACTURING COMPANY 2,722
- SKYWORKS SOLUTIONS US 2,290
- SEIKO EPSON CORPORATION 2,177
- IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158