H01J 29/023
Secondary-electron emitting electrode arrangements
Official title: {secondary-electron emitting electrode arrangements (secondary-emission tubes H01J43/00)}
H01J29/023 (Secondary-electron emitting electrode arrangements) appears on 32 US grants and 17 published applications in this corpus.
Search patents in H01J- Granted patents
- 32
- Published applications
- 17
- Assignees
- 20
- Inventors
- 66
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 2 | 3 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Image intensifier bloom mitigation16 Jun 2020US 10,685,806 B2L-3 Communications Corporation-Insight Technology Division
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- Electron tube6 Aug 2026US 2026/0229442 A1Nisshinbo Micro Devices Inc.
- Programmable Performance Configurations for Night Vision Device25 Jun 2020US 2020/0203112 A1Eagle Technology, LLC
- Image intensifier bloom mitigation19 Apr 2018US 2018/0108509 A1L-3 Communications Corporation-Insight Technology Division
- Image intensifier sensor as well as an imaging device comprising such an image intensifier sensor31 Aug 2017US 2017/0250049 A1Photonis Netherlands B.V.
- Vacuum Encapsulated, High Temperature Diamond Amplified Cathode Capsule and Method for Making Same5 Dec 2013US 2013/0320295 A1Brookhaven Science Associates, LLC
Most cited
By later US patents
- Field emission display devices21US 5,982,082 ASt. Clair Intellectual Property Consultants, Inc. · 1999
- Segmented cold cathode display panel10US 5,751,109 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1998
- Field emission display devices10US 5,955,833 ASt. Clair Intellectual Property Consultants, Inc. · 1999
- Nanopillar arrays for electron emission10US 7,884,324 B2Wisconsin Alumni Research Foundation · 2011
- Microchannel plates formed with deposition using non-reactive gas9US 4,945,286 AU. S. Philips Corporation · 1990