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CPC Main Group
H01J 3/00

Details of electron-optical or ion-optical arrangements common to two or more basic types of discharge tubes or lamps

Filing statistics

CPC H01J 3/00 belongs to the parent subclass H01J, which recorded 135,587 patent applications worldwide between 2013 and 2023. Annual filings grew from 10,933 in 2013 to 11,751 in 2023 (+7%), peaking at 14,583 applications in 2021. The most active applicants in class H01 are SAMSUNG ELECTRONICS COMPANY (37,897 applications), TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY (36,116 applications) and APPLIED MATERIALS (21,640 applications).

Source: EPO PATSTAT, worldwide filings

12 direct subcodes

Child Classifications

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  • H01J 3/04 Ion guns
  • H01J 3/06 two or more guns being arranged in a single vacuum space, e.g. for plural-ray tubes (H01J3/07 takes precedence)
  • H01J 3/07 Arrangements for controlling convergence of a plurality of beams
  • H01J 3/08 Arrangements for controlling intensity of ray or beam (H01J3/02, H01J3/04 take precedence)
  • H01J 3/10 Arrangements for centring ray or beam (H01J3/02, H01J3/04 take precedence)
  • H01J 3/12 Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses (H01J3/02, H01J3/04 take precedence)
  • H01J 3/36 Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration
  • H01J 3/38 Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
  • H01J 3/40 Arrangements for removing or diverting unwanted particles, e.g. for negative ions or fringing electrons; Arrangements for velocity or mass selection

Top Applicants

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

  1. SAMSUNG ELECTRONICS COMPANY KR 37,897
  2. TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
  3. APPLIED MATERIALS US 21,640
  4. LG ENERGY SOLUTION KR 20,770
  5. LG CHEM KR 19,835
  6. TOKYO ELECTRON JP 18,519
  7. ROBERT BOSCH DE 14,595
  8. INTEL CORPORATION US 13,580
  9. MURATA MANUFACTURING COMPANY JP 12,151
  10. SAMSUNG SDI COMPANY KR 12,080