H01J 21/18
Having magnetic control means
Official title: having magnetic control means; having both magnetic and electrostatic control means
H01J21/18 (Having magnetic control means) appears on 11 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 11
- Published applications
- 6
- Assignees
- 8
- Inventors
- 26
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Systems and methods for creating an electron coil magnet17 Sep 2024US 12,094,679 B2Vacon Oy
- Vacuum exhaust method3 Jul 2018US 10,014,145 B2Tokyo Electron Limited
- Linkage conduit for vacuum chamber applications1 Nov 2016US 9,484,183 B2Varian Semiconductor Equipment Associates, Inc.
- Particle acceleration devices with improved geometries for vacuum-insulator-anode triple junctions21 Jul 2015US 9,089,039 B2
- Plasma processing apparatus, electrode temperature adjustment device and electrode temperature adjustment method21 Oct 2014US 8,864,932 B2Tokyo Electron Limited
- Systems and methods for creating an electron coil magnet2 Jan 2025US 2025/0006425 A1Vacon Oy
- Systems and methods for creating an electron coil magnet23 Mar 2023US 2023/0093623 A1Vacon Oy
- Vacuum exhaust method30 Nov 2017US 2017/0345609 A1Tokyo Electron Limited
- Linkage conduit for vacuum chamber applications10 Mar 2016US 2016/0071686 A1Varian Semiconductor Equipment Associates, Inc.
- Particle acceleration devices with improved geometries for vacuum-insulator-anode triple junctions3 Jul 2014US 2014/0184055 A1
Most cited
By later US patents
- Vacuum switch apparatus9US 5,038,082 AHitachi, Ltd. · 1991
- Magnetically operated pulser3US 5,048,068 A1991
- Vacuum device for controlling spatial position and path of electron3US 5,468,972 ANEC Corporation · 1995
- Plasma processing apparatus, electrode temperature adjustment device and electrode temperature adjustment method2US 8,864,932 B2Tokyo Electron Limited · 2014
- Magnetically focused electron beam tube1US 3,955,114 AInternational Standard Electric Corporation · 1976