G01R 31/245
Testing of gas discharge tubes
Official title: {Testing of gas discharge tubes}
G01R31/245 (Testing of gas discharge tubes) appears on 38 US grants and 21 published applications in this corpus.
Search patents in G01R- Granted patents
- 38
- Published applications
- 21
- Assignees
- 30
- Inventors
- 68
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 3 |
| 2016 | 2 | 1 |
| 2017 | 4 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Assessment of matching networks8 Apr 2025US 12,272,533 B2Advanced Energy Industries, Inc.
- Light source device including discharge lamp, irradiation device and distinguishing method for discharge lamp27 Feb 2024US 11,913,985 B2Phoenix Electric Co., Ltd.
- Partial discharge synthesizer23 Nov 2021US 11,181,570 B2Rosemount Inc.
- Detection of damage in matching networks9 Mar 2021US 10,943,770 B2Advanced Energy Industries, Inc.
- Method and apparatus for nondestructive testing of a gas discharge tube3 Sep 2019US 10,401,418 B2The United States of America as represented by the Secretary of the Navy
- Assessment of matching networks15 Apr 2021US 2021/0111009 A1Advanced Energy Industries, Inc.
- Light source device including discharge lamp, irradiation device and distinguishing method for discharge lamp7 Jan 2021US 2021/0003627 A1Phoenix Electric Co., Ltd.
- Detection of damage in matching networks10 Sep 2020US 2020/0286720 A1Advanced Energy Industries, Inc.
- Partial discharge synthesizer19 Dec 2019US 2019/0383872 A1Rosemount Inc.
- Method and Apparatus for Nondestructive Testing of a Gas Discharge Tube2 Aug 2018US 2018/0217199 A1Spawar Systems Center Pacific
Most cited
By later US patents
- Ground fault detector and associated logic for an electronic ballast34US 5,334,912 AUSI Lighting, Inc. · 1994
- Fluorescent emergency ballast self test circuit29US 5,666,029 AThe Bodine Company, Inc. · 1997
- Test device for testing compact fluorescent lights and ballasts16US 5,323,116 A1994
- Method of an device for non-destructive pressure measurement of fluorescent lamps13US 4,021,727 ANorth American Philips Corporation · 1977
- Method and apparatus for non-destructively measuring internal film resistance in a fluorescent lamp11US 3,967,191 AGTE Sylvania Incorporated · 1976