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PCE
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CPC Subgroup Additional Only
H01J 2231/121

Means for indicating the position of the beam, e.g. beam indexing

Full Title

Cathode ray tubes or electron beam tubes (H01J2329/00 takes precedence) > CRTs having luminescent screens > Means for indicating the position of the beam, e.g. beam indexing

1 direct subcode

Child Classifications

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  • H01J 2231/123 by direct current detection, e.g. collecting electrodes

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