H01J 2329/0407
Field emission cathodes
H01J2329/0407 (Field emission cathodes) appears on 108 US grants and 156 published applications in this corpus.
Search patents in H01J- Granted patents
- 108
- Published applications
- 156
- Assignees
- 59
- Inventors
- 293
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 4 |
| 2005 | 1 | 3 |
| 2006 | 2 | 8 |
| 2007 | 2 | 6 |
| 2008 | 3 | 11 |
| 2009 | 1 | 26 |
| 2010 | 7 | 27 |
| 2011 | 11 | 22 |
| 2012 | 21 | 16 |
| 2013 | 22 | 11 |
| 2014 | 4 | 6 |
| 2015 | 11 | 7 |
| 2016 | 9 | 2 |
| 2017 | 4 | 0 |
| 2018 | 2 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Carbon nanotube based cold cathodes for x-ray generation15 Jul 2025US 12,362,125 B2
- Patterned focal plane arrays of carbon nanotube thin film bolometers with high temperature coefficient of resistance and improved detectivity for infrared imaging2 Feb 2021US 10,908,025 B2Carbon Solutions, Inc.
- Infrared optical sensor and manufacturing method thereof1 Dec 2020US 10,854,445 B2Electronics and Telecommunications Research Institute
- Optically addressed, thermionic electron beam device11 Aug 2020US 10,741,352 B2The Board of Trustees of the Leland Stanford Junior University
- Devices for carbon nanotube length control18 Sep 2018US 10,077,191 B2Korea University Research and Business Foundation
- Carbon nanotube based cold cathodes for x-ray generation26 Feb 2026US 2026/0058086 A1Carestream Dental LLC
- Carbon nanotube based cold cathodes for x-ray generation22 Feb 2024US 2024/0062984 A1
- Electron source based on field emission and production process for same5 Jan 2023US 2023/0005695 A1Centre National De La Recherche Scientifique
- Infrared optical sensor and manufacturing method thereof12 Dec 2019US 2019/0378716 A1Electronics and Telecommunications Research Institute
- Optically addressed, thermionic electron beam device7 Nov 2019US 2019/0341217 A1The Board of Trustees of the Leland Stanford Junior University
Most cited
By later US patents
- Enhanced field emission from carbon nanotubes mixed with particles34US 6,798,127 B2Nano-Proprietary, Inc. · 2004
- Method for controlled density growth of carbon nanotubes26US 7,687,981 B2Brother International Corporation · 2010
- Enhanced field emission from carbon nanotubes mixed with particles22US 7,040,948 B2Nano-Proprietary, Inc. · 2006
- Article comprising metal oxide nanostructures and method for fabricating such nanostructures18US 7,276,389 B2Samsung Electronics Co., Ltd. · 2007
- Field emission devices including nanotubes or other nanoscale articles15US 8,456,073 B2Massachusetts Institute of Technology · 2013