H01J 23/11
Means for reducing noise
Official title: Means for reducing noise (in electron or ion gun H01J23/06)
H01J23/11 (Means for reducing noise) appears on 8 US grants and 8 published applications in this corpus.
Search patents in H01J- Granted patents
- 8
- Published applications
- 8
- Assignees
- 7
- Inventors
- 20
- Latest grant
- 30 Jul 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 1 | 0 |
| 1995 | 0 | 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 | 1 | 5 |
| 2005 | 3 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Magnetron for microwave oven30 Jul 2019US 10,366,857 B2LG Electronics Inc.
- Vacuum electron device drift tube22 Aug 2017US 9,741,521 B1Varex Imaging Corporation
- Magnetron and high-frequency heating apparatus having the same4 Jul 2017US 9,697,977 B2Samsung Electronics Co., Ltd.
- Low-noise, crossed-field devices such as a microwave magnetron having an azimuthally-varying axial magnetic field and microwave oven utilizing same26 Jul 2005US 6,921,890 B2The Regents of the University of Michigan
- Low-noise, crossed-field devices such as a microwave magnetron, microwave oven utilizing same and method of converting a noisy magnetron to a low-noise magnetron29 Mar 2005US 6,872,929 B2The Regents of the University of Michigan
- Large electron tube, magnetic body, and method for using large electron tube30 Jan 2025US 2025/0037959 A1National Institutes for Quantum Science and Technology
- Magnetron for microwave oven26 Apr 2018US 2018/0114668 A1LG Electronics Inc.
- Magnetron and high-frequency heating apparatus having the same18 Jun 2015US 2015/0170866 A1Samsung Electronics Co., Ltd.
- Low-noise, crossed-field devices such as a microwave magnetron having an azimuthally-varying axial magnetic field and microwave oven utilizing same21 Oct 2004US 2004/0206751 A1The Regents of the University of Michigan
- Low-noise, crossed-field devices such as a microwave magnetron, microwave oven utilizing same and method of converting a noisy magnetron to a low-noise magnetron21 Oct 2004US 2004/0206754 A1The Regents of the University of Michigan
Most cited
By later US patents
- High frequency amplifying apparatus with a collector which has a periodic amplitude variable longitudinal magnetic field therein6US 5,283,534 AEEV Limited · 1994
- Vacuum electron device drift tube6US 9,741,521 B1Varex Imaging Corporation · 2017
- Low-noise, crossed-field devices such as a microwave magnetron, microwave oven utilizing same and method of converting a noisy magnetron to a low-noise magnetron4US 6,872,929 B2The Regents of the University of Michigan · 2005
- Magnetron for microwave ovens1US 6,693,378 B1Samsung Electronics Co., Ltd. · 2004