H01J 1/90
Insulation between electrodes or supports within the vacuum space
H01J1/90 (Insulation between electrodes or supports within the vacuum space) appears on 15 US grants and 12 published applications in this corpus.
Search patents in H01J- Granted patents
- 15
- Published applications
- 12
- Assignees
- 17
- Inventors
- 39
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 2 |
| 2014 | 2 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ozone-generating apparatus21 Jul 2026US 12,688,990 B2Metawater Co., Ltd.
- Emitter and device comprising same24 Mar 2026US 12,586,747 B2Denka Company Limited
- X-ray cathode focusing element20 May 2025US 12,308,199 B2GE Precision Healthcare LLC
- Electron emitting element and method for manufacturing same30 Jan 2024US 11,887,802 B2National Institute of Advanced Industrial Science and Technology
- Electrochemical solid-state field-emission ion source22 Jun 2021US 11,043,349 B1HRL Laboratories, LLC
- Electron tube1 Jan 2026US 2026/0005005 A1Hamamatsu Photonics K.K.
- Emitter and device comprising same3 Jul 2025US 2025/0218717 A1Denka Company Limited
- Ozone-generating apparatus7 Nov 2024US 2024/0371592 A1Metawater Co., Ltd.
- X-ray cathode focusing element14 Sep 2023US 2023/0290603 A1GE Precision Healthcare LLC
- Electron emitting element and method for manufacturing same4 May 2023US 2023/0134647 A1National Institute of Advanced Industrial Science and Technology
Most cited
By later US patents
- Deuterium gas discharge tube18US 5,552,669 AHamamatsu Photonics K.K. · 1996
- Sheet-shaped heat and light source11US 8,450,930 B2Hon Hai Precision Industry Co., Ltd. · 2013
- Method for making sheet-shaped heat and light source10US 8,808,049 B2Hon Hai Precision Industry Co., Ltd. · 2014
- Electrochemical solid-state field-emission ion source5US 11,043,349 B1HRL Laboratories, LLC · 2021
- Dielectric for multiple gaseous discharge display/memory panel having improved voltage characteristics3US 4,121,133 AOwens-Illinois, Inc. · 1978