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IPC Subgroup
H03H 9/12

for networks with interaction of optical and acoustic waves

Introduced: September 1968

Last revised: January 2006

Full Title

Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators > Details > Holders or supports > Mounting in enclosures > for networks with interaction of optical and acoustic waves

Classification Context

Section:
ELECTRICITY
Class:
ELECTRONIC CIRCUITRY
Subclass:
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

Top Applicants

Top 10 applicants by patent filingsfor 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