H01J 2229/4872
Circular
Official title: circular
H01J2229/4872 (Circular) appears on 82 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 82
- Published applications
- 6
- Assignees
- 26
- Inventors
- 123
- Latest grant
- 24 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 2 | 0 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 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 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Field emission device24 May 2022US 11,342,153 B2Electronics and Telecommunications Research Institute
- Electron gun for color cathode ray tube30 Nov 2004US 6,825,621 B2Samsung SDI.Co., Ltd.
- Electron gun for cathode-ray tube6 Jan 2004US 6,674,227 B2LG Electronics Inc.
- Cathode ray tube with low dynamic correction voltage14 Oct 2003US 6,633,142 B1Hitachi, Ltd.
- Electrodes of electron gun1 Jul 2003US 6,586,869 B1Samsung SDI.Co., Ltd.
- Field emission device30 Sep 2021US 2021/0305002 A1Electronics and Telecommunications Research Institute
- Electron gun for cathode-ray tube and color cathode-ray tube equipped with the same5 Jan 2006US 2006/0001349 A1Matsushita Toshiba Picture Display Co., Ltd.
- Electron gun for color cathode ray tube1 Aug 2002US 2002/0101161 A1Samsung SDI.Co., Ltd.
- Cathode ray tube apparatus25 Apr 2002US 2002/0047657 A1Kabushiki Kaisha Toshiba
- Electron gun for cathode-ray tube21 Feb 2002US 2002/0021077 A1LG Electronics Inc.
Most cited
By later US patents
- Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes35US 4,814,670 AMatsushita Electronics Corporation · 1989
- Cathode ray tube apparatus with quadrupole electrode structure35US 4,886,999 AMitsubishi Denki Kabushiki Kaishi · 1989
- Electron gun system with dynamic convergence control29US 5,027,043 AZenith Electronics Corporation · 1991
- Color CRT system and process with dynamic quadrupole lens structure24US 5,036,258 AZenith Electronics Corporation · 1991
- Color cathode ray tube apparatus24US 5,113,112 AKabushiki Kaisha Toshiba · 1992