H01J 1/3042
Microengineered
Official title: {microengineered, e.g. Spindt-type}
H01J1/3042 (Microengineered) appears on 657 US grants and 375 published applications in this corpus.
Search patents in H01J- Granted patents
- 657
- Published applications
- 375
- Assignees
- 230
- Inventors
- 980
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 10 | 0 |
| 1992 | 15 | 0 |
| 1993 | 16 | 0 |
| 1994 | 16 | 0 |
| 1995 | 26 | 0 |
| 1996 | 44 | 0 |
| 1997 | 36 | 0 |
| 1998 | 60 | 0 |
| 1999 | 23 | 0 |
| 2000 | 24 | 0 |
| 2001 | 18 | 13 |
| 2002 | 26 | 26 |
| 2003 | 28 | 22 |
| 2004 | 34 | 43 |
| 2005 | 29 | 34 |
| 2006 | 27 | 24 |
| 2007 | 14 | 13 |
| 2008 | 12 | 13 |
| 2009 | 12 | 11 |
| 2010 | 13 | 24 |
| 2011 | 13 | 17 |
| 2012 | 15 | 8 |
| 2013 | 9 | 17 |
| 2014 | 10 | 11 |
| 2015 | 12 | 11 |
| 2016 | 10 | 10 |
| 2017 | 16 | 13 |
| 2018 | 13 | 8 |
| 2019 | 10 | 12 |
| 2020 | 14 | 8 |
| 2021 | 7 | 7 |
| 2022 | 4 | 12 |
| 2023 | 9 | 5 |
| 2024 | 6 | 4 |
| 2025 | 6 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electron emission methods to generate electron beams with a narrow energy distribution25 Aug 2026US 12,719,005 B2The Regents of the University of California
- Systems and methods for fabricating silicon die stacks for electron emitter array chips26 May 2026US 12,640,326 B2
- Field emission electron source, electron optical device, and manufacturing method26 Aug 2025US 12,400,820 B2Hitachi, Ltd.
- Electron source, electron gun, and charged particle beam device19 Aug 2025US 12,394,585 B2Hitachi High-Tech Corporation
- Electrode and filament coupled by adapter12 Aug 2025US 12,387,902 B1FEI Company
- Field emission device having automatic current limiter10 Sep 2026US 2026/0269165 A1LG Electronics Inc.
- Silicon carbide based triode electron emitter and producing an electron beam with same23 Jul 2026US 2026/0213110 A1
- Backend field emission devices19 Mar 2026US 2026/0081089 A1
- Cathodes having carbon nanotube (cnt) fibers wound onto graphite substrates or frameworks11 Dec 2025US 2025/0379018 A1Government of the United States as Represented by the Secretary of the Air Force
- Emitter, electron gun and electronic apparatus, and emitter manufacturing method4 Dec 2025US 2025/0372334 A1
Most cited
By later US patents
- Very high speed integrated microelectronic tubes410US 4,721,885 ASRI International · 1988
- Electron source with micropoint emissive cathodes and display means by cathodoluminescence excited by field emission using said source400US 4,940,916 ACommissariat A L' Energie Atomique · 1990
- Vertical microelectronic field emission devices312US 5,475,280 AMcnc · 1995
- Micro-structure field emission electron source223US 3,970,887 AMicro-Bit Corporation · 1976
- Electron emission device215US 4,904,895 ACanon Kabushiki Kaisha · 1990