H01J 23/075
Magnetron injection guns
H01J23/075 (Magnetron injection guns) appears on 13 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 13
- Published applications
- 4
- Assignees
- 12
- Inventors
- 35
- Latest grant
- 5 Mar 2013
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 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
- Coaxial cavity gyrotron with two electron beams5 Mar 2013US 8,390,200 B2
- Crossed-field device22 May 2001US 6,236,161 B1Communications & Power Industries, Inc.
- Field-emission cold-cathode electron gun having emitter tips between the top surface of gate electrode and focusing electrode16 Nov 1999US 5,986,388 ANEC Corporation
- Gyrotron system having adjustable flux density6 Oct 1998US 5,818,170 AMitsubishi Denki Kabushiki Kaisha
- Mechanically tunable magnetron injection gun (MIG)29 Sep 1998US 5,814,939 A
- Large electron tube, magnetic body, and method for using large electron tube30 Jan 2025US 2025/0037959 A1National Institutes for Quantum Science and Technology
- Electron source for linear accelerators13 Sep 2012US 2012/0229024 A1Elekta AB (publ)
- Coaxial cavity gyrotron with two electron beams10 Jun 2010US 2010/0141143 A1
- Coaxial cavity gyrotron with two electron beams13 Dec 2007US 2007/0285018 A1
Most cited
By later US patents
- Electrodes with primary and secondary emitters for use in cross-field tubes17US 5,280,218 ARaytheon Company · 1994
- Microwave oven and magnetron with cold cathode14US 5,676,873 ASharp Kabushiki Kaisha · 1997
- Field-emission cold-cathode electron gun having emitter tips between the top surface of gate electrode and focusing electrode14US 5,986,388 ANEC Corporation · 1999
- Gyrotron system having adjustable flux density10US 5,818,170 AMitsubishi Denki Kabushiki Kaisha · 1998
- Electron beam injection device for an ultra-high frequency radio electric wave generator6US 4,567,402 AThomson-CSF · 1986