H01J 9/02
Manufacture of electrodes or electrode systems
H01J9/02 (Manufacture of electrodes or electrode systems) appears on 4,066 US grants and 2,710 published applications in this corpus.
Search patents in H01J- Granted patents
- 4,066
- Published applications
- 2,710
- Assignees
- 944
- Inventors
- 5,996
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 44 | 0 |
| 1977 | 33 | 0 |
| 1978 | 42 | 0 |
| 1979 | 25 | 0 |
| 1980 | 28 | 0 |
| 1981 | 33 | 0 |
| 1982 | 31 | 0 |
| 1983 | 30 | 0 |
| 1984 | 34 | 0 |
| 1985 | 23 | 0 |
| 1986 | 30 | 0 |
| 1987 | 37 | 0 |
| 1988 | 29 | 0 |
| 1989 | 50 | 0 |
| 1990 | 52 | 0 |
| 1991 | 58 | 0 |
| 1992 | 75 | 0 |
| 1993 | 62 | 0 |
| 1994 | 62 | 0 |
| 1995 | 75 | 0 |
| 1996 | 108 | 0 |
| 1997 | 135 | 0 |
| 1998 | 160 | 0 |
| 1999 | 173 | 0 |
| 2000 | 199 | 0 |
| 2001 | 177 | 73 |
| 2002 | 175 | 221 |
| 2003 | 181 | 222 |
| 2004 | 222 | 262 |
| 2005 | 160 | 260 |
| 2006 | 183 | 282 |
| 2007 | 119 | 231 |
| 2008 | 125 | 168 |
| 2009 | 119 | 158 |
| 2010 | 132 | 133 |
| 2011 | 135 | 86 |
| 2012 | 95 | 67 |
| 2013 | 70 | 71 |
| 2014 | 60 | 54 |
| 2015 | 66 | 44 |
| 2016 | 42 | 48 |
| 2017 | 52 | 39 |
| 2018 | 49 | 42 |
| 2019 | 38 | 45 |
| 2020 | 58 | 35 |
| 2021 | 39 | 33 |
| 2022 | 29 | 29 |
| 2023 | 27 | 40 |
| 2024 | 35 | 37 |
| 2025 | 41 | 14 |
| 2026 | 9 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Surface mount electrical devices and methods23 Jun 2026US 12,665,155 B2Bourns, Inc.
- Photocathode including nanostructures for extended wavelengths16 Jun 2026US 12,658,397 B2L3Harris Technologies, Inc.
- Systems and methods for fabricating silicon die stacks for electron emitter array chips26 May 2026US 12,640,326 B2
- Agave syrup formulation or suspension for active pharmaceutical agents19 May 2026US 12,629,422 B2Genexa Inc.
- Electron source and method for manufacturing same, and emitter and device provided with same19 May 2026US 12,633,487 B2Denka Company Limited
- X-ray devices with nanotube emitters and methods of forming8 Oct 2026US 2026/0311951 A1Varex Imaging Corporation
- Preparation method of tungsten-rhenium-based diffusion-type thermionic cathode material containing low melting point barium calcium aluminate salt24 Sep 2026US 2026/0290736 A1Beijing University of Technology
- Field emission device having automatic current limiter10 Sep 2026US 2026/0269165 A1LG Electronics Inc.
- Tungsten alloy wire, preparation method therefor and use thereof, and tungsten carbide alloy filament13 Aug 2026US 2026/0234761 A1Xiamen Honglu Tungsten Molybdenum Industry Co., Ltd.
- Ion source cathode with monolithic radiation shields30 Jul 2026US 2026/0221371 A1Axcelis Technologies, Inc.
Most cited
By later US patents
- Method for manufacturing porous structure and method for forming pattern645US 6,565,763 B1Kabushiki Kaisha Toshiba · 2003
- Self-oriented bundles of carbon nanotubes and method of making same326US 6,232,706 B1The Board of Trustees of the Leland Stanford Junior University · 2001
- Vertical microelectronic field emission devices312US 5,475,280 AMcnc · 1995
- Microelectronic and microelectromechanical devices comprising carbon nanotube components, and methods of making same295US 6,445,006 B1Advanced Technology Materials, Inc. · 2002
- Polymeric compositions for manufacture of secondary electron multiplier tubes and method for manufacture thereof291US 4,093,562 AMatsushita Electric Industrial Co., Ltd. · 1978