H01J 2229/4848
Aperture shape as viewed along beam axis
H01J2229/4848 (Aperture shape as viewed along beam axis) appears on 135 US grants and 22 published applications in this corpus.
Search patents in H01J- Granted patents
- 135
- Published applications
- 22
- Assignees
- 39
- Inventors
- 187
- 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 | 10 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 8 | 0 |
| 1990 | 9 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 8 |
| 2003 | 6 | 2 |
| 2004 | 7 | 3 |
| 2005 | 1 | 3 |
| 2006 | 4 | 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 | 1 |
| 2017 | 1 | 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.
Subgroups
Granted patents
- H01J 2229/4872CircularIndexing code82
- H01J 2229/4858ParallelogramIndexing code70
- H01J 2229/4875OvalIndexing code39
- H01J 2229/4896Complex and not provided forIndexing code36
- H01J 2229/4879Non-symmetric about field scanning axisIndexing code21
- H01J 2229/4886PolygonalIndexing code20
- H01J 2229/4893Interconnected aperturesIndexing code3
- H01J 2229/4851TrapezoidalIndexing code0
All 9 subgroupsShow fewer
Recent patents
- Field emission device24 May 2022US 11,342,153 B2Electronics and Telecommunications Research Institute
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- Cathode-ray tube apparatus18 Apr 2006US 7,030,548 B2Kabushiki Kaisha Toshiba
- Field emission device30 Sep 2021US 2021/0305002 A1Electronics and Telecommunications Research Institute
- Low Aberration, High Intensity Electron Beam For X-Ray Tubes30 Jun 2016US 2016/0189908 A1General Electric Company
- 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.
- Color cathode ray tube apparatus24 Nov 2005US 2005/0258731 A1Matsushita Toshiba Picture Display Co., Ltd.
- Color braun tube apparatus20 Oct 2005US 2005/0231094 A1Matsushita Toshiba Picture Display Co., Ltd.
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 display tube with electrostatic focusing lens24US 4,626,738 AU. S. Philips Corporation · 1986
- Color CRT system and process with dynamic quadrupole lens structure24US 5,036,258 AZenith Electronics Corporation · 1991