H01J 23/28
Interdigital slow-wave structures
Official title: Interdigital slow-wave structures; Adjustment therefor
H01J23/28 (Interdigital slow-wave structures) appears on 6 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 6
- Published applications
- 4
- Assignees
- 5
- Inventors
- 10
- Latest grant
- 14 Jan 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 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 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Slow waveguide for travelling wave tube14 Jan 2020US 10,535,488 B2Thales
- Slow wave circuit and traveling wave tube19 Nov 2019US 10,483,075 B2NEC Network and Sensor Systems, Ltd.
- Electron device and method for manufacturing an electron device28 Aug 2018US 10,062,538 B2Nanyang Technological University
- Method and apparatus for bi-planar backward wave oscillator20 Mar 2007US 7,193,485 B2
- Delay line for traveling wave tubes23 Nov 1976US 3,993,924 ASiemens Aktiengesellschaft
- Slow waveguide for travelling wave tube31 Jan 2019US 2019/0035592 A1Thales
- Slow wave circuit and traveling wave tube22 Nov 2018US 2018/0337016 A1NEC Network and Sensor Systems, Ltd.
- Electron device and method for manufacturing an electron device7 Apr 2016US 2016/0099127 A1Nanyang Technological University
- Method and apparatus for bi-planar backward wave oscillator14 Apr 2005US 2005/0077973 A1
Most cited
By later US patents
- Delay line for traveling wave tubes2US 3,993,924 ASiemens Aktiengesellschaft · 1976
- Method and apparatus for bi-planar backward wave oscillator2US 7,193,485 B22007
- Electron device and method for manufacturing an electron device1US 10,062,538 B2Nanyang Technological University · 2018
- Slow wave circuit and traveling wave tube1US 10,483,075 B2NEC Network and Sensor Systems, Ltd. · 2019