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PCE
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DIFF Subgroup
G21K 1/08

Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J29/46; )

Introduced: July 1974

Title

Titles differ between systems:

IPC: Deviation, concentration, or focusing of the beam by electric or magnetic means

CPC: Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J29/46; )

Full Title

Full titles differ between systems:

IPC:

Arrangements for handling particles or ionising radiation, e.g. focusing or moderating > Deviation, concentration, or focusing of the beam by electric or magnetic means

CPC:

Arrangements for handling particles or ionising radiation, e.g. focusing or moderating > Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J29/46; )

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 1985.

Child Classifications

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  • G21K 1/087 by electrical means since 1985 IPC+CPC Available in IPC and CPC
  • G21K 1/093 by magnetic means since 1985 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class G21,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA GENERAL NUCLEAR POWER CORPORATION 2,364
  2. CGN POWER COMPANY 1,899
  3. CHINA NUCLEAR POWER ENGINEERING COMPANY 1,870
  4. NUCLEAR POWER INSTITUTE OF CHINA 1,517
  5. KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,367
  6. WESTINGHOUSE ELECTRIC CORPORATION US 1,295
  7. KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,196
  8. CHINESE ACADEMY OF SCIENCES 1,044
  9. CHINA INSTITUTE OF ATOMIC ENERGY 1,011
  10. HITACHI-GE NUCLEAR ENERGY 955

Top Applicants (CPC)

Class G21,2013–2023, worldwide · Source: EPO PATSTAT

  1. CHINA GENERAL NUCLEAR POWER CORPORATION 1,383
  2. WESTINGHOUSE ELECTRIC CORPORATION US 1,347
  3. KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,303
  4. CGN POWER COMPANY 1,156
  5. CHINA NUCLEAR POWER ENGINEERING COMPANY 1,149
  6. KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,146
  7. NUCLEAR POWER INSTITUTE OF CHINA 1,086
  8. CHINESE ACADEMY OF SCIENCES 765
  9. CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 763
  10. CHINA INSTITUTE OF ATOMIC ENERGY 659