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DIFF Main Group
H03H 7/00

Multiple-port networks comprising only passive electrical elements as network components

Introduced: September 1968

Additional Content IPC

Receiver input circuits Networks simulating a length of communication cable

Of 13 combined children, 10 exist in both systems.

3 codes are CPC-only extensions.

Note: 1 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H03H 7/002 CPC only CPC only
  • H03H 7/004 CPC only CPC only
  • H03H 7/52 One-way transmission networks, i.e. unilines IPC+CPC Available in IPC and CPC
  • H03H 7/54 Modifications of networks to reduce influence of variations of temperature since 1980 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

  1. QUALCOMM US 5,625
  2. SAMSUNG ELECTRONICS COMPANY KR 5,496
  3. MURATA MANUFACTURING COMPANY JP 5,478
  4. HUAWEI TECHNOLOGIES COMPANY CN 3,383
  5. INTEL CORPORATION US 3,091
  6. TEXAS INSTRUMENTS US 3,070
  7. MURATA MANUFACTURING COMPANY 2,722
  8. SKYWORKS SOLUTIONS US 2,290
  9. SEIKO EPSON CORPORATION 2,177
  10. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,158

Top Applicants (CPC)

Class H03,2013–2023, worldwide · Source: EPO PATSTAT

  1. SAMSUNG ELECTRONICS COMPANY KR 7,293
  2. QUALCOMM US 7,085
  3. MURATA MANUFACTURING COMPANY JP 5,982
  4. HUAWEI TECHNOLOGIES COMPANY CN 4,641
  5. INTEL CORPORATION US 3,863
  6. TEXAS INSTRUMENTS US 3,409
  7. MURATA MANUFACTURING COMPANY 2,874
  8. SK HYNIX KR 2,644
  9. SKYWORKS SOLUTIONS US 2,545
  10. IBM (INTERNATIONAL BUSINESS MACHINES CORPORATION) US 2,437