G01R 31/24
Testing of discharge tubes
Official title: Testing of discharge tubes (during manufacture H01J9/42)
G01R31/24 (Testing of discharge tubes) appears on 106 US grants and 49 published applications in this corpus.
Search patents in G01R- Granted patents
- 106
- Published applications
- 49
- Assignees
- 86
- Inventors
- 235
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 3 | 1 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 2 | 1 |
| 2010 | 1 | 2 |
| 2011 | 3 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 4 |
| 2014 | 1 | 3 |
| 2015 | 5 | 7 |
| 2016 | 2 | 4 |
| 2017 | 7 | 3 |
| 2018 | 5 | 2 |
| 2019 | 7 | 2 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 2 | 0 |
| 2025 | 2 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Measurement of a photocathode current29 Sep 2026US 12,748,143 B2Applied Materials Israel Ltd.
- Assessment of matching networks8 Apr 2025US 12,272,533 B2Advanced Energy Industries, Inc.
- Evaluating performance of X-ray tube18 Feb 2025US 12,228,602 B2Siemens Healthineers AG
- Wide-bandgap semiconductor layer characterization3 Sep 2024US 12,078,607 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Light source device including discharge lamp, irradiation device and distinguishing method for discharge lamp27 Feb 2024US 11,913,985 B2Phoenix Electric Co., Ltd.
- Measurement of a photocathode current30 Apr 2026US 2026/0118403 A1Applied Materials Israel Ltd.
- Testing station, testing modules and testing method for testing operation of a plurality of image intensifier tubes5 Feb 2026US 2026/0036615 A1General Starlight Co., Inc.
- Evaluating Performance of X-Ray Tube16 Mar 2023US 2023/0079022 A1Siemens Healthcare GmbH
- Wide-bandgap semiconductor layer characterization16 Feb 2023US 2023/0050640 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Assessment of matching networks15 Apr 2021US 2021/0111009 A1Advanced Energy Industries, Inc.
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
- Method and apparatus for testing line screen CRT registration20US 4,439,735 AZenith Radio Corporation · 1984
- Street light testing kit19US 5,557,207 AArea Lighting Research, Inc. · 1996
- Method of convergence measurement for a color picture tube and an apparatus therefor17US 4,593,309 ATokyo Shibaura Denki Kabushiki Kaisha · 1986