H01J 1/50
Magnetic means for controlling the discharge
H01J1/50 (Magnetic means for controlling the discharge) appears on 24 US grants and 13 published applications in this corpus.
Search patents in H01J- Granted patents
- 24
- Published applications
- 13
- Assignees
- 21
- Inventors
- 59
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Device for ionization of a fluid11 Aug 2026US 12,706,268 B2Brairtech Sweden AB
- Field emission cathode device and method for forming a field emission cathode device15 Apr 2025US 12,278,078 B2NCX Corporation
- Dual cathode ion source7 Sep 2021US 11,114,277 B2Varian Semiconductor Equipment Associates, Inc.
- Dual cathode ion source11 Aug 2020US 10,741,361 B2Varian Semiconductor Equipment Associates, Inc.
- Dual cathode ion source15 Oct 2019US 10,446,372 B2Varian Semiconductor Equipment Associates, Inc.
- Limit detection system and limit detection method16 Jul 2026US 2026/0202575 A1Kabushiki Kaisha Toshiba
- A device for ionization of a fluid4 Sep 2025US 2025/0279256 A1Brairtech Sweden AB
- Field emission cathode device and method for forming a field emission cathode device16 Nov 2023US 2023/0369000 A1NCX Corporation
- Dual Cathode Ion Source17 Sep 2020US 2020/0294765 A1Varian Semiconductor Equipment Associates, Inc.
- Dual Cathode Ion Source19 Dec 2019US 2019/0385811 A1Varian Semiconductor Equipment Associates, Inc.
Most cited
By later US patents
- Magnetically stabilized xenon arc lamp17US 3,988,626 AEprad Incorporated · 1976
- Electrostatic shield to reduce wall damage in an electrodeless high intensity discharge lamp14US 5,438,235 AGeneral Electric Company · 1995
- Discharge lamp device13US 4,434,385 AMatsushita Electric Works, Ltd. · 1984
- High voltage d-c vacuum interrupter device with magnetic control of interrupter impedance with movable contact9US 4,130,781 AGould Inc. · 1978
- Low pressure metal vapor discharge lamp with tubular member and magnetic means8US 4,177,401 AHitachi, Ltd. · 1979