G21F PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02)
Introduced: September 1968
Description
G21F covers shielding systems, protective devices, and structural arrangements designed to attenuate or block ionizing radiation including X-rays, gamma rays, and particle beams. This subclass encompasses radiation shielding materials, barrier designs, protective clothing, and biological shielding solutions for personnel and equipment in nuclear facilities, medical environments, and industrial applications. G21F also includes methods and apparatus for decontamination of radioactively contaminated materials, facilities, and equipment, as well as techniques for treating or neutralizing radioactive contamination. Adjacent classifications such as G21C (nuclear reactor core engineering) and G21H (controlled thermonuclear fusion) are distinguished by their focus on reactor operation rather than radiation protection itself.
Title
Titles differ between systems:
IPC: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
CPC: PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02)
Full Title
Full titles differ between systems:
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR (radiation protection by pharmaceutical means A61K8/00, A61Q17/04; in cosmonautic vehicles B64G1/54; combined with a reactor G21C11/00; combined with X-ray tubes H01J35/16; combined with X-ray apparatus H05G1/02)
Additional Content IPC
Limiting references
Use of cosmetics or similar toilet preparations already classified as such in when brought into direct contact with the skin (i.e. topical preparations) for affording protection against X-rays or other harmful rays Radiation protection in cosmonautical vehicles Shielding structurally associated with a reactor Vessels, containers or shields associated with X-ray tubes X-ray producing apparatus involving X-ray tubes; constructional details thereof; control thereof; circuits therefor , , Apparatus or processes for producing X-rays, not involving X-ray tubes, e.g. involving generation of a plasma
Application references
Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment; application or adaptation of safety means therefor Applying radioactive material to the body; shielding of fluid reservoirs therefor, e.g. syringe shielding
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
Navigate with arrow keys, Enter to open
- G21F 1/00 Shielding characterised by the composition of the materials IPC+CPC Available in IPC and CPC
- G21F 3/00 Shielding characterised by its physical form, e.g. granules, or shape of the material IPC+CPC Available in IPC and CPC
- G21F 9/00 Treating radioactively contaminated material; Decontamination arrangements therefor +3 CPC IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class G21,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 2,364
- CGN POWER COMPANY 1,899
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,870
- NUCLEAR POWER INSTITUTE OF CHINA 1,517
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,367
- WESTINGHOUSE ELECTRIC CORPORATION US 1,295
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,196
- CHINESE ACADEMY OF SCIENCES 1,044
- CHINA INSTITUTE OF ATOMIC ENERGY 1,011
- HITACHI-GE NUCLEAR ENERGY 955
Top Applicants (CPC)
Class G21,2013–2023, worldwide · Source: EPO PATSTAT
- CHINA GENERAL NUCLEAR POWER CORPORATION 1,383
- WESTINGHOUSE ELECTRIC CORPORATION US 1,347
- KOREA ATOMIC ENERGY RESEARCH INSTITUTE KR 1,303
- CGN POWER COMPANY 1,156
- CHINA NUCLEAR POWER ENGINEERING COMPANY 1,149
- KOREA HYDRO & NUCLEAR POWER COMPANY KR 1,146
- NUCLEAR POWER INSTITUTE OF CHINA 1,086
- CHINESE ACADEMY OF SCIENCES 765
- CEA (COMMISSARIAT A L'ENERGIE ATOMIQUE) FR 763
- CHINA INSTITUTE OF ATOMIC ENERGY 659