H01J
Electric discharge tubes or discharge lamps
Official title: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H)
H01J (Electric discharge tubes or discharge lamps) appears on 78,656 US grants and 69,520 published applications in this corpus.
Search patents in H01J- Granted patents
- 78,656
- Published applications
- 69,520
- Assignees
- 10,445
- Inventors
- 91,764
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 765 | 0 |
| 1977 | 682 | 0 |
| 1978 | 687 | 0 |
| 1979 | 511 | 0 |
| 1980 | 542 | 0 |
| 1981 | 599 | 0 |
| 1982 | 609 | 0 |
| 1983 | 561 | 0 |
| 1984 | 647 | 0 |
| 1985 | 707 | 0 |
| 1986 | 726 | 0 |
| 1987 | 888 | 0 |
| 1988 | 827 | 0 |
| 1989 | 993 | 0 |
| 1990 | 929 | 0 |
| 1991 | 984 | 0 |
| 1992 | 986 | 0 |
| 1993 | 962 | 0 |
| 1994 | 1006 | 0 |
| 1995 | 1068 | 0 |
| 1996 | 1166 | 0 |
| 1997 | 1217 | 0 |
| 1998 | 1649 | 0 |
| 1999 | 1743 | 0 |
| 2000 | 1829 | 0 |
| 2001 | 1969 | 838 |
| 2002 | 2254 | 2558 |
| 2003 | 2533 | 2581 |
| 2004 | 2468 | 3063 |
| 2005 | 1914 | 3237 |
| 2006 | 2078 | 3377 |
| 2007 | 1675 | 3202 |
| 2008 | 1821 | 3006 |
| 2009 | 1767 | 2931 |
| 2010 | 2153 | 2736 |
| 2011 | 2006 | 2463 |
| 2012 | 2047 | 2251 |
| 2013 | 2033 | 2406 |
| 2014 | 2176 | 2686 |
| 2015 | 2198 | 2903 |
| 2016 | 2304 | 2653 |
| 2017 | 2334 | 2526 |
| 2018 | 2124 | 2344 |
| 2019 | 2407 | 2701 |
| 2020 | 2525 | 2848 |
| 2021 | 2198 | 2843 |
| 2022 | 2172 | 2959 |
| 2023 | 2049 | 2969 |
| 2024 | 2217 | 2865 |
| 2025 | 2291 | 2680 |
| 2026 | 1660 | 1894 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Main groups
Granted patents with any code in the group
- H01J 37/00Discharge tubes with provision for introducing objects or material to be exposed35,405
- H01J 2237/00Discharge tubes exposing object to beamIndexing code18,743
- H01J 49/00Particle spectrometers or separator tubes10,248
- H01J 9/00Apparatus or processes specially adapted for the manufacture , installation, removal, maintenance8,029
- H01J 29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered7,624
- H01J 61/00Gas-discharge or vapour-discharge lamps6,309
- H01J 1/00Details of electrodes, of magnetic control means, of screens, or of the3,399
- H01J 35/00X-ray tubes3,057
All 43 main groupsShow fewer
- H01J 31/00Cathode ray tubes2,995
- H01J 2229/00Details of cathode ray tubes or electron beam tubesIndexing code2,255
- H01J 11/00Gas-filled discharge tubes with alternating current induction of the discharge2,215
- H01J 2201/00Electrodes common to discharge tubesIndexing code2,198
- H01J 2235/00X-ray tubesIndexing code1,859
- H01J 2329/00Electron emission display panelsIndexing code1,788
- H01J 2211/00Plasma display panels with alternate current induction of the dischargeIndexing code1,602
- H01J 65/00Lamps without any electrode inside the vessel1,585
- H01J 27/00Ion beam tubes1,581
- H01J 3/00Details of electron-optical or ion-optical arrangements common to two or more basic1,406
- H01J 23/00Details of transit-time tubes of the types covered by group h01j25/001,314
- H01J 5/00Details relating to vessels or to leading-in conductors common to two or1,300
- H01J 43/00Secondary-emission tubes832
- H01J 17/00Gas-filled discharge tubes with solid cathode827
- H01J 25/00Transit-time tubes791
- H01J 47/00Tubes for determining the presence, intensity, density or energy of radiation or548
- H01J 7/00Details not provided for in the preceding groups and common to two447
- H01J 2209/00Apparatus and processes for manufacture of discharge tubesIndexing code437
- H01J 63/00Cathode-ray or electron-stream lamps411
- H01J 2231/00Cathode ray tubes or electron beam tubesIndexing code311
- H01J 2217/00Gas-filled discharge tubesIndexing code308
- H01J 21/00Vacuum tubes301
- H01J 41/00Discharge tubes for measuring pressure of introduced gas or for detecting presence251
- H01J 19/00Details of vacuum tubes of the types covered by group h01j21/00248
- H01J 33/00Discharge tubes with provision for emergence of electrons or ions from the217
- H01J 40/00Photoelectric discharge tubes not involving the ionisation of a gas211
- H01J 45/00Discharge tubes functioning as thermionic generators186
- H01J 2225/00Transit-time tubesIndexing code94
- H01J 2203/00Electron or ion optical arrangements common to discharge tubes or lampsIndexing code83
- H01J 2893/00Discharge tubes and lampsIndexing code76
- H01J 2223/00Details of transit-time tubes of the types covered by group h01j2225/00Indexing code54
- H01J 13/00Discharge tubes with liquid-pool cathodes34
- H01J 2261/00Gas- or vapour-discharge lampsIndexing code16
- H01J 15/00Gas-filled discharge tubes with gaseous cathodes6
- H01J 99/00Subject matter not provided for in other groups of this subclass0
Recent patents
- Volumetric measurement of micro droplets6 Oct 2026US 12,752,294 B2DH Technologies Development Pte. Ltd.
- Coated cutting tool with an alternating layer composition6 Oct 2026US 12,752,344 B2Walter AG
- Identifying and classifying microorganisms6 Oct 2026US 12,753,428 B2Board of Regents, The University of Texas System
- Semiconductor manufacturing apparatus member and semiconductor manufacturing apparatus6 Oct 2026US 12,753,480 B2Toto Ltd.
- Film forming method and film forming apparatus6 Oct 2026US 12,753,485 B2Tokyo Electron Limited
- Semiconductor cleaning apparatus and method8 Oct 2026US 2026/0307113 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Method for producing transparent conductive coatings for emi protection using hipims8 Oct 2026US 2026/0308745 A1Raytheon Company
- Pulse windowing optical sensor8 Oct 2026US 2026/0309547 A1Tokyo Electron Limited
- Sample preparation system for electron microscopy8 Oct 2026US 2026/0309653 A1The Regents of the University of California
- Astroagents: a multi-agent ai for hypothesis generation from mass spectrometry data8 Oct 2026US 2026/0309689 A1Georgia Tech Research Corporation
Most cited
By later US patents
- Particle-optical projection system1,466US 7,388,217 B2IMS Nanofabrication GmbH · 2008
- Luminous lamp having an ultraviolet filtering and explosion proof thin film1,018US 7,394,190 B2Nanoforce Technologies Corporation · 2008
- Light emitting device having a nitride compound semiconductor and a phosphor containing a garnet fluorescent material1,017US 5,998,925 ANichia Kagaku Kogyo K. K. · 1999
- CVD Processing chamber1,003US 5,558,717 AAPPLIED Materials.Inc. · 1996
- Apparatus and method for growth of a thin film940US 6,511,539 B1ASM America, Inc. · 2003