G21B
Fusion reactors
Official title: FUSION REACTORS (uncontrolled reactors G21J)
G21B (Fusion reactors) appears on 961 US grants and 1,321 published applications in this corpus.
Search patents in G21B- Granted patents
- 961
- Published applications
- 1,321
- Assignees
- 468
- Inventors
- 2,206
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 14 | 0 |
| 1978 | 12 | 0 |
| 1979 | 18 | 0 |
| 1980 | 23 | 0 |
| 1981 | 36 | 0 |
| 1982 | 22 | 0 |
| 1983 | 26 | 0 |
| 1984 | 19 | 0 |
| 1985 | 12 | 0 |
| 1986 | 18 | 0 |
| 1987 | 25 | 0 |
| 1988 | 19 | 0 |
| 1989 | 16 | 0 |
| 1990 | 13 | 0 |
| 1991 | 14 | 0 |
| 1992 | 13 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 12 | 0 |
| 1997 | 15 | 0 |
| 1998 | 13 | 0 |
| 1999 | 13 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 4 |
| 2002 | 2 | 18 |
| 2003 | 8 | 33 |
| 2004 | 4 | 19 |
| 2005 | 13 | 25 |
| 2006 | 13 | 32 |
| 2007 | 6 | 30 |
| 2008 | 13 | 37 |
| 2009 | 13 | 40 |
| 2010 | 3 | 38 |
| 2011 | 8 | 52 |
| 2012 | 10 | 33 |
| 2013 | 15 | 42 |
| 2014 | 11 | 39 |
| 2015 | 20 | 43 |
| 2016 | 29 | 56 |
| 2017 | 30 | 63 |
| 2018 | 37 | 68 |
| 2019 | 46 | 70 |
| 2020 | 51 | 84 |
| 2021 | 35 | 54 |
| 2022 | 41 | 60 |
| 2023 | 34 | 76 |
| 2024 | 32 | 109 |
| 2025 | 49 | 91 |
| 2026 | 41 | 105 |
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
- Sulfur blanket6 Oct 2026US 12,755,853 B2Beam Alpha, Inc.
- Plasma magneto-inertial fusion arrangement that compensates for timing variations among pulsed power-driven electromagnetic particle accelerators6 Oct 2026US 12,755,854 B1Equilibria Power
- Direct laser fusion system15 Sep 2026US 12,738,384 B2Blue Laser Fusion, Inc.
- Magnetic mirror machine15 Sep 2026US 12,738,385 B2Novatron Fusion Group AB
- Stellarators using arrays of permanent magnets1 Sep 2026US 12,725,725 B2The Trustees of Princeton University
- Divertor gas puffing8 Oct 2026US 2026/0311894 A1Tokamak Energy Ltd
- System and method for forming inertial confinement fusion target capsules with engineered foam interior surfaces8 Oct 2026US 2026/0311895 A1Lawrence Livermore National Security, LLC
- Component for compressing matter8 Oct 2026US 2026/0311896 A1First Light Fusion Limited
- Unitary Housing Having Sections and having a Hollow Toroidal Interior Chamber and an Interior Surface, and the Interior Surface of the Housing having a Rifled Geometric Shape to which Electrical Energy is Pulsed8 Oct 2026US 2026/0311897 A1American Fusion Inc.
- Resource usage prediction method of plasma control system based on lstm1 Oct 2026US 2026/0301982 A1Hefei Institutes of Physical Science, Chinese Academy of Sciences
Most cited
By later US patents
- Photoelectric enhanced plasma glow discharge system and method including radiation means514US 4,664,769 AInternational Business Machines Corporation · 1987
- Plasma facing components of nuclear fusion reactors employing tungsten materials370US 6,261,648 B1Japan Atomic Energy Research Institute · 2001
- Plasma facing components of nuclear fusion reactors employing tungsten materials369US 6,610,375 B2Japan Atomic Energy Research Institute · 2003
- Electromagnetic systems with double-resonant spiral coil components133US 7,973,296 B2Tetraheed LLC · 2011
- Controlled fusion in a field reversed configuration and direct energy conversion107US 6,611,106 B2The Regents of the University of California · 2003