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IPC Subgroup
H01J 49/02

Details

Introduced: January 1980

Last revised: January 2006

Full Title

Particle spectrometers or separator tubes > Details

Classification Context

Section:
ELECTRICITY
Class:
ELECTRIC ELEMENTS
Subclass:
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

7 direct subcodes

Child Classifications

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  • H01J 49/04 Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
  • H01J 49/06 Electron- or ion-optical arrangements
  • H01J 49/08 Electron sources, e.g. for generating photo-electrons, secondary electrons or Auger electrons
  • H01J 49/2 Magnetic deflection
  • H01J 49/22 Electrostatic deflection
  • H01J 49/24 Vacuum systems, e.g. maintaining desired pressures

Top Applicants

Top 10 applicants by patent filingsfor class H01, 2013–2023, worldwide · Source: EPO PATSTAT

  1. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
  2. SAMSUNG ELECTRONICS COMPANY KR 42,206
  3. LG CHEM KR 21,383
  4. APPLIED MATERIALS US 20,441
  5. LG ENERGY SOLUTION KR 20,279
  6. SAMSUNG DISPLAY KR 19,725
  7. CHINESE ACADEMY OF SCIENCES 19,400
  8. TOYOTA MOTOR CORPORATION 18,819
  9. SGCC(STATE GRID CORPORATION OF CHINA) 18,082
  10. TOKYO ELECTRON JP 17,634