G21F 3/00
Shielding characterised by its physical form
Official title: Shielding characterised by its physical form, e.g. granules, or shape of the material
G21F3/00 (Shielding characterised by its physical form) appears on 684 US grants and 743 published applications in this corpus.
Search patents in G21F- Granted patents
- 684
- Published applications
- 743
- Assignees
- 424
- Inventors
- 1,376
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 14 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 4 | 0 |
| 2001 | 10 | 1 |
| 2002 | 6 | 8 |
| 2003 | 8 | 10 |
| 2004 | 5 | 12 |
| 2005 | 9 | 6 |
| 2006 | 4 | 18 |
| 2007 | 4 | 11 |
| 2008 | 9 | 13 |
| 2009 | 8 | 20 |
| 2010 | 10 | 23 |
| 2011 | 9 | 20 |
| 2012 | 12 | 20 |
| 2013 | 23 | 46 |
| 2014 | 32 | 47 |
| 2015 | 32 | 35 |
| 2016 | 36 | 37 |
| 2017 | 28 | 47 |
| 2018 | 34 | 47 |
| 2019 | 43 | 48 |
| 2020 | 47 | 48 |
| 2021 | 38 | 44 |
| 2022 | 40 | 43 |
| 2023 | 30 | 40 |
| 2024 | 35 | 34 |
| 2025 | 25 | 39 |
| 2026 | 18 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power conversion system and flight vehicle6 Oct 2026US 12,752,924 B2Hitachi, Ltd.
- Breast axilla and thyroid radiation shielding device for medical personnel1 Sep 2026US 12,721,579 B2ProtectMed, LLC
- Neutron capture therapy system and neutron generation part recovery method therefor25 Aug 2026US 12,714,882 B2Neuboron Therapy System Ltd.
- Shoulder transfer weight support system and face shield28 Jul 2026US 12,690,662 B2
- Anti-nuclear radiation magnetic fluid sealing device9 Jun 2026US 12,651,675 B2Beijing Jiaotong University
- Radiation shield assembly17 Sep 2026US 2026/0272392 A1Rampart IC, LLC
- Device For Personal Protection Against Ionizing Radiation, Highly Breathable And Quick-Drying27 Aug 2026US 2026/0253756 A1Simad S.R.L.
- Modular nuclear battery and nuclear cell system27 Aug 2026US 2026/0253759 A1Terminus Pesquisa E Desenvolvimento Em Energia LTDA
- Radiation source unit and measurement apparatus20 Aug 2026US 2026/0243562 A1Yokogawa Electric Corporation
- Composite Materials for Radiation Shielding, Articles, and Methods20 Aug 2026US 2026/0245757 A1The Florida State University Research Foundation, Inc.
Most cited
By later US patents
- RFID system and method for ensuring personnel safety182US 6,853,303 B2Kimberly-Clark Worldwide, Inc. · 2005
- Inspection unit147US 6,663,280 B2Heimann Systems GmbH · 2003
- Radiation shield133US 4,938,233 ATechton, Inc. · 1990
- Radiation shield113US 4,581,538 AColonial X-Ray Corporation · 1986
- Radiation shield and shielding material with excellent heat-transferring property94US 5,015,863 ANisshin Steel Co., Ltd. · 1991