H01J 25/40
The backward travelling wave being utilised
Official title: the backward travelling wave being utilised
H01J25/40 (The backward travelling wave being utilised) appears on 7 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 7
- Published applications
- 4
- Assignees
- 5
- Inventors
- 12
- Latest grant
- 18 Aug 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 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 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Backward-wave oscillator in communication system18 Aug 2015US 9,111,714 B2Electronics and Telecommunications Research Institute
- Electromagnetic wave oscillator having multi-tunnel and electromagnetic wave generating apparatus including the electromagnetic wave oscillator14 Jul 2015US 9,082,579 B2Samsung Electronics Co., Ltd.
- Apparatus and method for producing electromagnetic oscillations16 Mar 2010US 7,679,462 B2Manhattan Technologies Ltd.
- Method and apparatus for bi-planar backward wave oscillator20 Mar 2007US 7,193,485 B2
- Backward wave coupler for sub-millimeter waves in a traveling wave tube17 Jan 2006US 6,987,360 B1Calabazas Creek Research, Inc.
- Backward-wave oscillator in communication system5 Mar 2015US 2015/0061784 A1Electronics and Telecommunications Research Institute
- Electromagnetic wave oscillator having multi-tunnel and electromagnetic wave generating apparatus including the electromagnetic wave oscillator8 Aug 2013US 2013/0200789 A1Samsung Electronics Co., Ltd.
- Apparatus and method for producing electromagnetic oscillations31 Jan 2008US 2008/0024236 A1Manhattan Technologies Ltd.
- Method and apparatus for bi-planar backward wave oscillator14 Apr 2005US 2005/0077973 A1
Most cited
By later US patents
- Backward wave oscillator tube utilizing successive delay line sections for increased power6US 4,263,566 AThomson-CSF · 1981
- Apparatus and method for producing electromagnetic oscillations6US 7,679,462 B2Manhattan Technologies Ltd. · 2010
- Backward wave oscillator tube for the production of microwave5US 4,149,107 AThomson-CSF · 1979
- Backward wave coupler for sub-millimeter waves in a traveling wave tube3US 6,987,360 B1Calabazas Creek Research, Inc. · 2006
- Method and apparatus for bi-planar backward wave oscillator2US 7,193,485 B22007