H03K 3/55
The switching device being a gas-filled tube having a control electrode
Official title: the switching device being a gas-filled tube having a control electrode
H03K3/55 (The switching device being a gas-filled tube having a control electrode) appears on 54 US grants and 11 published applications in this corpus.
Search patents in H03K- Granted patents
- 54
- Published applications
- 11
- Assignees
- 39
- Inventors
- 95
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Duty cycle control to achieve uniformity6 Jul 2023US 2023/0215694 A1Lam Research Corporation
- Extracorporeal shockwave lithotripsy (eswl) system and method using in-situ sensing of system and device data and therapeutic/system/device level control14 Oct 2021US 2021/0315601 A1Translational Technologies, LLC
- Ozone generation device and power supply for ozone generation device20 May 2021US 2021/0147233 A1Kabushiki Kaisha Toshiba
- Deterministic gas-plasma-regulated auto polarity high-voltage electric-field transducing transformer14 May 2020US 2020/0153356 A1
Most cited
By later US patents
- Electrical excitation circuit for gas lasers44US 4,549,091 AStandard Oil Company (Indiana) · 1985
- Optically triggered back-lighted thyratron network41US 4,890,040 A1989
- High-voltage pulse generating circuit and electrostatic recipitator containing it40US 5,623,171 AHitachi Metals, Ltd. · 1997
- High-voltage pulse generating circuit, and discharge-excited laser and accelerator containing such circuit36US 5,072,191 AHitachi Metals, Ltd. · 1991
- Pulse power supply for generating extremely short pulse high voltages30US 4,541,848 A1985