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DIFF Subgroup
H03M 1/66

Digital/analogue converters ( H03M1/10 take precedence)

Introduced: January 1985

Title

Titles differ between systems:

IPC: Digital/analogue converters

CPC: Digital/analogue converters ( H03M1/10 take precedence)

Full Title

Full titles differ between systems:

IPC:

Analogue/digital conversion; Digital/analogue conversion > Digital/analogue converters

CPC:

Analogue/digital conversion; Digital/analogue conversion (conversion of analogue values to or from differential modulation H03M3/00) > Digital/analogue converters ( H03M1/10 take precedence)

Of 12 combined children, 6 exist in both systems.

6 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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  • H03M 1/661 CPC only CPC only
  • H03M 1/662 CPC only CPC only
  • H03M 1/664 CPC only CPC only
  • H03M 1/665 CPC only CPC only
  • H03M 1/667 CPC only CPC only
  • H03M 1/668 CPC only CPC only
  • H03M 1/70 Automatic control for modifying converter range since 1985 IPC+CPC Available in IPC and CPC
  • H03M 1/72 Sequential conversion in series-connected stages (H03M1/68 takes precedence) since 1985 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