G21F
Protection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment
Official title: 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)
G21F (Protection against x-radiation, gamma radiation, corpuscular radiation or particle bombardment) appears on 5,312 US grants and 3,707 published applications in this corpus.
Search patents in G21F- Granted patents
- 5,312
- Published applications
- 3,707
- Assignees
- 2,178
- Inventors
- 10,346
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 75 | 0 |
| 1977 | 76 | 0 |
| 1978 | 63 | 0 |
| 1979 | 57 | 0 |
| 1980 | 85 | 0 |
| 1981 | 116 | 0 |
| 1982 | 73 | 0 |
| 1983 | 67 | 0 |
| 1984 | 123 | 0 |
| 1985 | 85 | 0 |
| 1986 | 115 | 0 |
| 1987 | 130 | 0 |
| 1988 | 112 | 0 |
| 1989 | 142 | 0 |
| 1990 | 121 | 0 |
| 1991 | 109 | 0 |
| 1992 | 108 | 0 |
| 1993 | 88 | 0 |
| 1994 | 103 | 0 |
| 1995 | 91 | 0 |
| 1996 | 92 | 0 |
| 1997 | 108 | 0 |
| 1998 | 120 | 0 |
| 1999 | 108 | 0 |
| 2000 | 88 | 0 |
| 2001 | 90 | 20 |
| 2002 | 81 | 74 |
| 2003 | 97 | 83 |
| 2004 | 70 | 90 |
| 2005 | 46 | 90 |
| 2006 | 68 | 98 |
| 2007 | 55 | 78 |
| 2008 | 57 | 120 |
| 2009 | 54 | 121 |
| 2010 | 85 | 129 |
| 2011 | 63 | 121 |
| 2012 | 90 | 113 |
| 2013 | 108 | 171 |
| 2014 | 139 | 209 |
| 2015 | 139 | 192 |
| 2016 | 163 | 196 |
| 2017 | 160 | 177 |
| 2018 | 143 | 211 |
| 2019 | 171 | 183 |
| 2020 | 185 | 200 |
| 2021 | 126 | 199 |
| 2022 | 183 | 178 |
| 2023 | 141 | 173 |
| 2024 | 122 | 179 |
| 2025 | 138 | 162 |
| 2026 | 83 | 140 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
Recent patents
- Power conversion system and flight vehicle6 Oct 2026US 12,752,924 B2Hitachi, Ltd.
- Tight connection device for the transfer of objects including a stub end provided with a release lug6 Oct 2026US 12,753,835 B2Getinge Life Science France
- Highly dense red mud shields for X-ray and γ-ray attenuation29 Sep 2026US 12,747,190 B2Council of Scientific and Industrial Research
- Transfer system for a sealed enclosure having a sealed connection device for connecting to an enclosed volume22 Sep 2026US 12,744,132 B2Getinge Life Science France
- Shielding device of source mounting and demounting for nuclear logging instrument15 Sep 2026US 12,736,707 B2Institute of Geology and Geophysics, Cas
- Method and apparatus for confining the spread of pollutants spilled into a moving fluid8 Oct 2026US 2026/0308859 A1
- Neutron radiation shielding material, shielding material for semiconductor device, package for semiconductor device, shielding material for nuclear reactor, nuclear reactor containment vessel, nuclear reactor building, shielding material for nuclear fusion reactor, nuclear fusion reactor, and nuclear fusion reactor building8 Oct 2026US 2026/0311898 A1Dexerials Corporation
- Dry storage container for spent nuclear fuel with improved heat dissipation efficiency of decay heat8 Oct 2026US 2026/0311903 A1Korea Radioactive Waste Agency
- Methods and devices for radioactive waste solidification8 Oct 2026US 2026/0311904 A1AVANTech, Inc.
- Production of highly purified 212pb8 Oct 2026US 2026/0311905 A1Sciencons AS
Most cited
By later US patents
- Method of handling radioactive alkali metal waste490US 4,234,449 AThe United States of America as represented by the United States Department of Energy · 1980
- Production of metal ion containing carbon fibers useful in electron shielding applications454US 3,997,638 ACelanese Corporation · 1976
- High density composite material358US 6,048,379 AIdeas to Market, L.P. · 2000
- Protective shielding assembly for use in loading a hypodermic syringe with radioactive material233US 3,993,063 AUnion Carbide Corporation · 1976
- Method for disposing of waste materials232US 4,428,700 AE. R. Johnson Associates, Inc. · 1984