H01J 23/087
Magnetic focusing arrangements
H01J23/087 (Magnetic focusing arrangements) appears on 98 US grants and 32 published applications in this corpus.
Search patents in H01J- Granted patents
- 98
- Published applications
- 32
- Assignees
- 45
- Inventors
- 130
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 11 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 7 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 2 |
| 2005 | 3 | 1 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 2 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 2 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 2 |
| 2025 | 3 | 4 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices4 Nov 2025US 12,463,000 B2Elve Inc.
- Magnet array holder accelerated assembly and improved alignment in vacuum electronic devices16 Sep 2025US 12,417,868 B2Elve Inc.
- Multi-layer vacuum electron device and method of manufacture4 Feb 2025US 12,217,926 B2Elve Inc.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices16 Apr 2024US 11,961,693 B2Elve Inc.
- Multi-layer vacuum electron device and method of manufacture6 Feb 2024US 11,894,208 B2Elve Inc.
- Collector for a traveling wave tube and traveling wave tube with such a collector9 Apr 2026US 2026/0100322 A1Thales Deutschland GmbH
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices5 Feb 2026US 2026/0038760 A1Elve Inc.
- Magnet array holder for accelerated assembly and improved alignment in vacuum electronic devices8 Jan 2026US 2026/0011476 A1Elve Inc.
- Klystron27 Nov 2025US 2025/0364202 A1Canon Electron Tubes & Devices Co., Ltd.
- Multi-layer vacuum electron device and method of manufacture5 Jun 2025US 2025/0182994 A1Elve Inc.
Most cited
By later US patents
- Field adjustable transverse flux sources63US 4,862,128 AThe United States of America as represented by the Secretary of the Army · 1989
- Polycarbonate compositions24US 4,245,058 AGeneral Electric Company · 1981
- Hollow substantially hemispherical permanent magnet high-field flux source19US 4,835,506 AThe United States of America as represented by the Secretary of the Army · 1989
- Magnetic cladding for use in periodic permanent magnet stacks18US 5,107,238 AThe United States of America as represented by the Secretary of the Army · 1992
- Klystron unit14US 4,558,258 ATokyo Shibaura Denki Kabushiki Kaisha · 1985