H01J 2893/00
Discharge tubes and lamps
H01J2893/00 (Discharge tubes and lamps) appears on 76 US grants and 33 published applications in this corpus.
Search patents in H01J- Granted patents
- 76
- Published applications
- 33
- Assignees
- 52
- Inventors
- 177
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 16 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 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 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 3 |
| 2016 | 0 | 4 |
| 2017 | 3 | 3 |
| 2018 | 5 | 2 |
| 2019 | 5 | 3 |
| 2020 | 2 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 1 |
| 2023 | 2 | 2 |
| 2024 | 2 | 4 |
| 2025 | 2 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 2893/0001Electrodes and electrode systems suitable for discharge tubes or lampsIndexing code22
- H01J 2893/0031Tubes with material luminescing under electron bombardmentIndexing code14
- H01J 2893/0059Arc discharge tubesIndexing code14
- H01J 2893/0063Plasma light sourcesIndexing code10
- H01J 2893/0064Tubes with cold main electrodesIndexing code6
- H01J 2893/0033Vacuum connection techniques applicable to discharge tubes and lampsIndexing code4
- H01J 2893/0072Disassembly or repair of discharge tubesIndexing code4
- H01J 2893/0048Tubes with a main cathodeIndexing code2
All 17 subgroupsShow fewer
- H01J 2893/0096Transport of discharge tube components during manufactureIndexing code2
- H01J 2893/006Tubes with electron bombarded gasIndexing code1
- H01J 2893/0061Tubes with discharge used as electron sourceIndexing code1
- H01J 2893/0029Electron beam tubesIndexing code0
- H01J 2893/003Tubes with plural electrode systemsIndexing code0
- H01J 2893/0032Tubes with variable amplification factorIndexing code0
- H01J 2893/0062Tubes with temperature ionized gas as electron sourceIndexing code0
- H01J 2893/0069Tubes for displaying charactersIndexing code0
- H01J 2893/007Sequential discharge tubesIndexing code0
Recent patents
- Cathode-ray tube ultraviolet light source3 Feb 2026US 12,542,268 B2
- Method and system for preparing cathode material1 Apr 2025US 12,263,635 B2Wuhan United Imaging Healthcare Co., Ltd.
- Laser-sustained plasma light source with tapered window14 Jan 2025US 12,198,921 B2KLA Corporation
- Plasma light engine24 Dec 2024US 12,176,201 B2
- Far-UVC light source with an internal dielectric coating filter arranged on the interior side of electrode12 Mar 2024US 11,929,248 B1City University of Hong Kong
- Light-emitting sealed body1 Oct 2026US 2026/0302154 A1Hamamatsu Photonics K.K.
- Spectral range extension for laser-sustained plasma light collection28 May 2026US 2026/0148951 A1KLA Corporation
- Semiconductor electrode structures and methods of forming same23 Oct 2025US 2025/0329510 A1
- Photoionization detector (pid) lamp assembly and a method to manufacture the pid lamp assembly2 Oct 2025US 2025/0308869 A1Life Safety Distribution AG
- Cathode-ray tube ultraviolet light source31 Oct 2024US 2024/0363326 A1
Most cited
By later US patents
- Flat CRT system131US 3,935,500 ATexas Instruments Incorporated · 1976
- Cathode structure for a multibeam cathode ray tube85US 4,020,381 ATexas Instruments Incorporated · 1977
- Display with UV-light emitting phosphor32US 5,821,685 AMotorola, Inc. · 1998
- Parallel multi-electrode spark gap switch24US 4,267,484 AThe United States of America as represented by the Secretary of the Air Force · 1981
- Fluorescent composition and fluorescent luminous device21US 4,791,336 AFutaba Denshi Kogyo K. K. · 1988