H01J 23/0275
Multistage collectors
Official title: {Multistage collectors}
H01J23/0275 (Multistage collectors) appears on 42 US grants and 17 published applications in this corpus.
Search patents in H01J- Granted patents
- 42
- Published applications
- 17
- Assignees
- 32
- Inventors
- 84
- Latest grant
- 26 Nov 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 2 | 2 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Travelling-wave tube26 Nov 2024US 12,154,749 B2Thales
- Partially grounded depressed collector6 Jun 2017US 9,673,015 B2Omega-P, Inc.
- Pulsed depressed collector3 Nov 2015US 9,177,748 B2The Board of Trustees of the Leland Stanford Junior University
- Dynamic depressed collector15 Feb 2011US 7,888,873 B2Communications & Power Industries, Inc.
- Amplifier comprising an electronic tube provided with collectors biased by at least two DC bias sources6 Jan 2009US 7,474,148 B2Thales
- Collector for a traveling wave tube and traveling wave tube with such a collector9 Apr 2026US 2026/0100322 A1Thales Deutschland GmbH
- Air-cooled depressed collectors and methods7 Nov 2024US 2024/0371594 A1Elve Inc.
- Travelling-wave tube4 Aug 2022US 2022/0246381 A1Thales
- Partially grounded depressed collector10 Mar 2016US 2016/0071681 A1Omega-P, Inc.
- Pulsed Depressed Collector7 Aug 2014US 2014/0217885 A1The Board of Trustees of the Leland Stanford Junior University
Most cited
By later US patents
- Multi-stage depressed collector for small orbit gyrotrons39US 5,780,970 ACalabazas Creek Research Center, Inc. · 1998
- Inductive output tube with multistage depressed collector electrodes providing a near-constant efficiency19US 5,650,751 ALitton Systems, Inc. · 1997
- Traveling-wave tube amplifier having collector potential lower than body potential13US 5,568,014 AKabushiki Kaisha Toshiba · 1996
- System and method for recovering power from a traveling wave tube13US 6,111,358 AHughes Electronics Corporation · 2000
- Multistage depressed collector for dual mode operation12US 4,277,721 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1981