G01N 27/68
Using electric discharge to ionise a gas
Official title: using electric discharge to ionise a gas
G01N27/68 (Using electric discharge to ionise a gas) appears on 207 US grants and 180 published applications in this corpus.
Search patents in G01N- Granted patents
- 207
- Published applications
- 180
- Assignees
- 154
- Inventors
- 490
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 6 |
| 2004 | 3 | 5 |
| 2005 | 3 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 3 | 3 |
| 2009 | 2 | 4 |
| 2010 | 4 | 6 |
| 2011 | 1 | 8 |
| 2012 | 2 | 5 |
| 2013 | 4 | 4 |
| 2014 | 9 | 15 |
| 2015 | 6 | 16 |
| 2016 | 5 | 3 |
| 2017 | 14 | 9 |
| 2018 | 8 | 15 |
| 2019 | 15 | 13 |
| 2020 | 17 | 19 |
| 2021 | 9 | 11 |
| 2022 | 8 | 10 |
| 2023 | 5 | 5 |
| 2024 | 8 | 6 |
| 2025 | 3 | 7 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ion detector and analyzer19 May 2026US 12,633,508 B2Hamamatsu Photonics K.K.
- Fluid analysis system6 Jan 2026US 12,517,100 B2Regents of the University of Minnesota
- Ionization device, mass spectrometry system, and ionization method18 Nov 2025US 12,476,100 B2Biochromato, Inc.
- Photoionization detector and method for gas sample analysis22 Jul 2025US 12,366,552 B2Mecanique Analytique Inc.
- Tesla photoionization detector1 Jul 2025US 12,345,649 B1
- Gas analysis device and substrate processing system comprising same3 Sep 2026US 2026/0259173 A1
- Measuring method and measuring device for greenhouse gases2 Jul 2026US 2026/0185970 A1Shimadzu Corporation
- Method for quantitative analysis of elements25 Dec 2025US 2025/0391648 A1IAS Inc.
- In-situ analysis of metal species for processing chambers17 Jul 2025US 2025/0231143 A1APPLIED Materials.Inc.
- Solution electrode glow discharge apparatus and method of use10 Jul 2025US 2025/0224373 A12S Water Incorporated
Most cited
By later US patents
- Apparatus for analyzing trace components69US 4,023,398 A1977
- Volatile organic compound sensor system69US 7,487,662 B2The University of Wyoming Research Corporation · 2009
- Refrigerant gas leak detector64US 5,351,037 AJ and N Associates, Inc. · 1994
- Alternating current discharge ionization detector53US 6,333,632 B1RAE Systems, Inc. · 2001
- Atmospheric sampling glow discharge ionization source43US 4,849,628 AMartin Marietta Energy Systems, Inc. · 1989