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PCE
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Search for IPC and CPC classification codes or keywords
DIFF Subgroup
H01J 23/02

Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16)

Introduced: September 1968

Title

Titles differ between systems:

IPC: Electrodes; Magnetic control means; Screens

CPC: Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16)

Full Title

Full titles differ between systems:

IPC:

Details of transit-time tubes of the types covered by group > Electrodes; Magnetic control means; Screens

CPC:

Details of transit-time tubes of the types covered by group H01J25/00 > Electrodes; Magnetic control means; Screens (associated with resonator or delay system H01J23/16)

IPC and CPC are identically structured here. All 7 subcodes exist in both systems.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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  • H01J 23/09 Electric systems for directing or deflecting the discharge along a desired path, e.g. E-type (focusing arrangements H01J23/08) IPC+CPC Available in IPC and CPC
  • H01J 23/10 Magnet systems for directing or deflecting the discharge along a desired path, e.g. a spiral path (magnetic focusing arrangements H01J23/08) IPC+CPC Available in IPC and CPC
  • H01J 23/11 Means for reducing noise (in electron or ion gun H01J23/06) IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

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

Top Applicants (CPC)

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