H01J 13/00
Discharge tubes with liquid-pool cathodes
Official title: Discharge tubes with liquid-pool cathodes, e.g. metal-vapour rectifying tubes
H01J13/00 (Discharge tubes with liquid-pool cathodes) appears on 34 US grants and 13 published applications in this corpus.
Search patents in H01J- Granted patents
- 34
- Published applications
- 13
- Assignees
- 19
- Inventors
- 43
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 2 | 3 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 3 | 4 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Processing systems, chambers, and related methods including turbines for energy harnessing27 Jan 2026US 12,534,821 B2APPLIED Materials.Inc.
- User terminal and radio communication method3 Jan 2023US 11,546,076 B2Ntt Docomo, Inc.
- Bidirectional gas discharge tube25 Oct 2022US 11,482,394 B2General Electric Technology GmbH
- Liquid electrode tip19 Oct 2021US 11,150,192 B22S Water Incorporated
- Solution electrode glow discharge apparatus28 Sep 2021US 11,133,146 B22S Water Incorporated
- Processing systems, chambers, and related methods including turbines for energy harnessing19 Sep 2024US 2024/0309548 A1APPLIED Materials.Inc.
- Liquid electrode tip22 Jul 2021US 2021/0223182 A12S Water Incorporated
- Bidirectional gas discharge tube15 Jul 2021US 2021/0217573 A1General Electric Company
- Solution electrode glow discharge apparatus3 Jun 2021US 2021/0166907 A12S Water Incorporated
- Atmospheric-Pressure Ionization and Fragmentation of Molecules for Structural Elucidation1 Apr 2021US 2021/0098245 A1Indiana University Research and Technology Corporation
Most cited
By later US patents
- Electrical power line and substation monitoring apparatus and systems325US 4,758,962 A1988
- Electrical power line monitoring systems, including harmonic value measurements and relaying communications152US 4,829,298 A1989
- Electrical power line and substation monitoring apparatus127US 4,855,671 A1989
- System and apparatus for monitoring and control of a bulk electric power delivery system120US 4,689,752 ANiagara Mohawk Power Corporation · 1987
- Electrical power line parameter measurement apparatus and systems, including compact, line-mounted modules100US 4,799,005 A1989