H01J 2229/00
Details of cathode ray tubes or electron beam tubes
Official title: Details of cathode ray tubes or electron beam tubes (H01J2329/00 takes precedence)
H01J2229/00 (Details of cathode ray tubes or electron beam tubes) appears on 2,255 US grants and 780 published applications in this corpus.
Search patents in H01J- Granted patents
- 2,255
- Published applications
- 780
- Assignees
- 406
- Inventors
- 2,985
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 25 | 0 |
| 1977 | 15 | 0 |
| 1978 | 10 | 0 |
| 1979 | 15 | 0 |
| 1980 | 11 | 0 |
| 1981 | 29 | 0 |
| 1982 | 28 | 0 |
| 1983 | 15 | 0 |
| 1984 | 20 | 0 |
| 1985 | 28 | 0 |
| 1986 | 39 | 0 |
| 1987 | 61 | 0 |
| 1988 | 64 | 0 |
| 1989 | 84 | 0 |
| 1990 | 70 | 0 |
| 1991 | 59 | 0 |
| 1992 | 57 | 0 |
| 1993 | 61 | 0 |
| 1994 | 35 | 0 |
| 1995 | 58 | 0 |
| 1996 | 81 | 0 |
| 1997 | 83 | 0 |
| 1998 | 116 | 0 |
| 1999 | 98 | 0 |
| 2000 | 121 | 0 |
| 2001 | 129 | 76 |
| 2002 | 195 | 216 |
| 2003 | 229 | 149 |
| 2004 | 157 | 120 |
| 2005 | 80 | 74 |
| 2006 | 75 | 44 |
| 2007 | 27 | 19 |
| 2008 | 9 | 13 |
| 2009 | 5 | 8 |
| 2010 | 8 | 3 |
| 2011 | 4 | 4 |
| 2012 | 1 | 1 |
| 2013 | 3 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 6 |
| 2016 | 4 | 6 |
| 2017 | 7 | 8 |
| 2018 | 8 | 5 |
| 2019 | 7 | 4 |
| 2020 | 7 | 1 |
| 2021 | 1 | 4 |
| 2022 | 3 | 4 |
| 2023 | 3 | 2 |
| 2024 | 3 | 6 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 2229/07Shadow masksIndexing code685
- H01J 2229/48Electron gunsIndexing code368
- H01J 2229/89Optical components associated with the vesselIndexing code273
- H01J 2229/86Vessels and containersIndexing code229
- H01J 2229/0007Elimination of unwanted or stray electromagnetic effectsIndexing code212
- H01J 2229/56Correction of beam opticsIndexing code161
- H01J 2229/70Electron beam control outside the vesselIndexing code119
- H01J 2229/88CoatingsIndexing code103
All 16 subgroupsShow fewer
- H01J 2229/863Passive shielding means associated with the vesselIndexing code89
- H01J 2229/96Circuit elements other than coils, reactors or the like, associated with theIndexing code51
- H01J 2229/58Electron beam control inside the vesselIndexing code32
- H01J 2229/87Means for avoiding vessel implosionIndexing code32
- H01J 2229/0061Cooling arrangementsIndexing code21
- H01J 2229/92Means providing or assisting electrical connection with or within the tubeIndexing code19
- H01J 2229/18Phosphor screensIndexing code13
- H01J 2229/94Means for obtaining or maintaining the desired pressure within the tubeIndexing code5
Recent patents
- Extraction grid24 Feb 2026US 12,562,331 B2BüHler Alzenau GmbH
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices4 Nov 2025US 12,463,000 B2Elve Inc.
- Extreme-ultraviolet light source device using electron beams21 Oct 2025US 12,451,316 B2Worldbeam Solution Co., Ltd.
- Multi-layer vacuum electron device and method of manufacture4 Feb 2025US 12,217,926 B2Elve Inc.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices16 Apr 2024US 11,961,693 B2Elve Inc.
- Insulator, Charged Particle Gun, and Charged Particle Beam Device6 Aug 2026US 2026/0229440 A1Hitachi High-Tech Corporation
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices5 Feb 2026US 2026/0038760 A1Elve Inc.
- Multi-layer vacuum electron device and method of manufacture5 Jun 2025US 2025/0182994 A1Elve Inc.
- Magneto-electrostatic sensing, focusing, and steering of electron beams in vacuum electron devices1 Aug 2024US 2024/0258061 A1Elve Inc.
- Multi-layer vacuum electron device and method of manufacture18 Jul 2024US 2024/0242916 A1Elve Inc.
Most cited
By later US patents
- Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching238US 6,816,141 B1Fergason Patent Properties, LLC · 2004
- Optical display system and method with optical shifting of pixel position including conversion of pixel layout to form delta to stripe pattern by time base multiplexing229US 6,243,055 B12001
- Anti-reflection high conductivity multi-layer coating for flat CRT products215US 6,441,964 B1Applied Vacuum Coating Technologies Co., Ltd. · 2002
- Integrated touch paint system for displays209US 4,692,809 AHughes Aircraft Company · 1987
- CRT magnifying lens attachment and glare reduction system161US 4,577,928 AData Vu Company · 1986