Electrodes; Screens; Mounting, supporting, spacing or insulating thereof

Introduced: September 1968

Title

Titles differ between systems:

IPC: Electrodes; Screens; Mounting, supporting, spacing, or insulating thereof

CPC: Electrodes; Screens; Mounting, supporting, spacing or insulating thereof

Full Title

Full titles differ between systems:

IPC:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group > Electrodes; Screens; Mounting, supporting, spacing, or insulating thereof

CPC:

Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00 > Electrodes; Screens; Mounting, supporting, spacing or insulating thereof

CPC subdivides this area 2x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01J 29/021 CPC only CPC only
H01J 29/023 CPC only CPC only
H01J 29/025 CPC only CPC only
H01J 29/026 CPC only CPC only
H01J 29/028 CPC only CPC only
H01J 29/04 Cathodes IPC+CPC Available in IPC and CPC
H01J 29/06 Screens for shielding; Masks interposed in the electron stream IPC+CPC Available in IPC and CPC
H01J 29/08 Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or collecting secondary electrons +1 CPC IPC+CPC Available in IPC and CPC
H01J 29/10 Screens on or from which an image or pattern is formed, picked up, converted or stored IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
SAMSUNG ELECTRONICS COMPANY KR 42,206
LG CHEM KR 21,383
APPLIED MATERIALS US 20,441
LG ENERGY SOLUTION KR 20,279
SAMSUNG DISPLAY KR 19,725
CHINESE ACADEMY OF SCIENCES 19,400
TOYOTA MOTOR CORPORATION 18,819
SGCC(STATE GRID CORPORATION OF CHINA) 18,082
TOKYO ELECTRON JP 17,634

Top Applicants (CPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

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