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PCE
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DIFF Subgroup
H01J 11/20

Constructional details

Introduced: January 2012

Full Title

Full titles differ between systems:

IPC:

Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel > Constructional details

CPC:

Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP] (circuits or methods for driving PDPs G09G3/28); Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel > Constructional details

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

IPC defines codes here since 2012.

Child Classifications

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  • H01J 11/46 Connecting or feeding means, e.g. leading-in conductors since 2012 IPC+CPC Available in IPC and CPC
  • H01J 11/48 Sealing, e.g. seals specially adapted for leading-in conductors since 2012 IPC+CPC Available in IPC and CPC
  • H01J 11/50 Filling, e.g. selection of gas mixture since 2012 IPC+CPC Available in IPC and CPC
  • H01J 11/52 Means for absorbing or adsorbing the gas mixture, e.g. by gettering since 2012 IPC+CPC Available in IPC and CPC
  • H01J 11/54 Means for exhausting the gas since 2012 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