G21B 1/05
Thermonuclear fusion reactors: with magnetic or electric plasma confinement
Official title: with magnetic or electric plasma confinement
G21B1/05 (Thermonuclear fusion reactors: with magnetic or electric plasma confinement) appears on 286 US grants and 476 published applications in this corpus.
Search patents in G21B- Granted patents
- 286
- Published applications
- 476
- Assignees
- 115
- Inventors
- 590
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 3 |
| 2003 | 3 | 10 |
| 2004 | 0 | 5 |
| 2005 | 6 | 5 |
| 2006 | 8 | 10 |
| 2007 | 2 | 6 |
| 2008 | 4 | 7 |
| 2009 | 3 | 3 |
| 2010 | 1 | 9 |
| 2011 | 1 | 9 |
| 2012 | 1 | 4 |
| 2013 | 2 | 7 |
| 2014 | 1 | 11 |
| 2015 | 7 | 13 |
| 2016 | 10 | 15 |
| 2017 | 10 | 23 |
| 2018 | 14 | 32 |
| 2019 | 23 | 27 |
| 2020 | 19 | 36 |
| 2021 | 20 | 23 |
| 2022 | 23 | 33 |
| 2023 | 21 | 35 |
| 2024 | 21 | 52 |
| 2025 | 28 | 36 |
| 2026 | 22 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Plasma magneto-inertial fusion arrangement that compensates for timing variations among pulsed power-driven electromagnetic particle accelerators6 Oct 2026US 12,755,854 B1Equilibria Power
- 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
- System and methods for forming and maintaining high energy and temperature FRC plasma via neutral beam injection25 Aug 2026US 12,720,663 B2Tae Technologies, Inc.
- Methods and systems for particle diversion and enhanced pumping efficiency18 Aug 2026US 12,712,089 B2Type One Energy Group, Inc.
- Divertor gas puffing8 Oct 2026US 2026/0311894 A1Tokamak Energy Ltd
- Resource usage prediction method of plasma control system based on lstm1 Oct 2026US 2026/0301982 A1Hefei Institutes of Physical Science, Chinese Academy of Sciences
- Fusion System that Includes a Toroidal Interior Chamber Formed by a Clamshell, the Toroidal Interior Chamber having an Interior Surface having a Rifled Geometric Shape and a Conductive Ring that is Between an Inner Perimeter of Sections of the Clamshell, Putting the Sections in Electrical Contact with each other24 Sep 2026US 2026/0290627 A1Kepler Fusion Technologies Inc.
- Fusion confinement device that forms a toroidal interior chamber having a rifling and an electronic controller electrically coupled to the fusion confinement device that is operable to control a plurality of pulses of electrical energy to the rifling24 Sep 2026US 2026/0290628 A1Kepler Fusion Technologies Inc.
- Advanced Fuel Oscillating Fusion Reactor24 Sep 2026US 2026/0290629 A1Tibbar Plasma Technologies, Inc.
Most cited
By later US patents
- Controlled fusion in a field reversed configuration and direct energy conversion107US 6,611,106 B2The Regents of the University of California · 2003
- Production of field-reversed mirror plasma with a coaxial plasma gun95US 4,314,879 AThe United States of America as represented by the United States Department of Energy · 1982
- Converging beam fusion system90US 4,202,725 A1980
- Systems for merging of toroidal plasmas86US 4,274,919 AGeneral Atomic Company · 1981
- Formation of a field reversed configuration for magnetic and electrostatic confinement of plasma79US 6,891,911 B2The Regents of the University of California · 2005