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IPC Subgroup
H03K 3/53

by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback

Introduced: September 1968

Last revised: January 2006

Full Title

Circuits for generating electric pulses; Monostable, bistable or multistable circuits > Generators characterised by the type of circuit or by the means used for producing pulses > by the use of an energy-accumulating element discharged through the load by a switching device controlled by an external signal and not incorporating positive feedback

Classification Context

Section:
ELECTRICITY
Class:
ELECTRONIC CIRCUITRY
Subclass:
PULSE TECHNIQUE

4 direct subcodes

Child Classifications

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  • H03K 3/537 the switching device being a spark gap
  • H03K 3/543 the switching device being a vacuum tube
  • H03K 3/55 the switching device being a gas-filled tube having a control electrode
  • H03K 3/57 the switching device being a semiconductor device

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