H01J 61/09
Hollow cathodes
H01J61/09 (Hollow cathodes) appears on 71 US grants and 57 published applications in this corpus.
Search patents in H01J- Granted patents
- 71
- Published applications
- 57
- Assignees
- 61
- Inventors
- 194
- Latest grant
- 4 Apr 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 4 |
| 2003 | 4 | 5 |
| 2004 | 4 | 6 |
| 2005 | 3 | 4 |
| 2006 | 3 | 7 |
| 2007 | 3 | 3 |
| 2008 | 4 | 9 |
| 2009 | 4 | 10 |
| 2010 | 1 | 5 |
| 2011 | 2 | 0 |
| 2012 | 3 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- External electrode fluorescent lamp and home appliance including the same4 Apr 2023US 11,621,157 B2EI Lighting Co., Ltd.
- Flat type lamp for photoionization detector and method for manufacturing the same16 Aug 2022US 11,415,548 B2Senko Co., Ltd.
- Laser-sustained plasma light source20 Dec 2016US 9,526,158 B1KLA-Tencor Corporation
- Laser-sustained plasma light source6 Dec 2016US 9,516,733 B1KLA-Tencor Corporation
- Laser-sustained plasma light source4 Aug 2015US 9,099,292 B1KLA-Tencor Corporation
- External electrode fluorescent lamp and home appliance including the same8 Sep 2022US 2022/0285144 A1EI Lighting Co., Ltd.
- Flat Type Lamp For Photoionization Detector And Method For Manufacturing The Same15 Oct 2020US 2020/0326305 A1Senko Co., Ltd.
- Hollow cathode lamp elapsed time recording system5 Jul 2012US 2012/0169237 A1PerkinElmer Health Sciences, Inc.
- Cold cathode fluorescent lamp4 Nov 2010US 2010/0277058 A1NEC Lighting, Ltd.
- Cold cathode tube lamp, lighting device for display device, display device, and television receiving device16 Sep 2010US 2010/0231813 A1Sharp Kabushiki Kaisha
Most cited
By later US patents
- Discharge device having cathode with micro hollow array70US 5,686,789 AOsram Sylvania Inc. · 1997
- Discharge device having cathode with micro hollow array60US 5,939,829 AOsram Sylvania Inc. · 1999
- Direct current high-pressure glow discharges43US 6,433,480 B1Old Dominion University · 2002
- Fluorescent lamp with opposing inversere cone electrodes29US 4,117,374 AGeneral Electric Company · 1978
- Low-pressure discharge lamp and luminaire provided with such a lamp29US 5,387,837 AU. S. Philips Corporation · 1995