H01J 49/168
Field ionisation
Official title: {field ionisation, e.g. corona discharge (atmospheric pressure corona discharge per se H01T19/00)}
H01J49/168 (Field ionisation) appears on 195 US grants and 203 published applications in this corpus.
Search patents in H01J- Granted patents
- 195
- Published applications
- 203
- Assignees
- 121
- Inventors
- 410
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
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| 1984 | 0 | 0 |
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| 1986 | 0 | 0 |
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| 1990 | 1 | 0 |
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| 1997 | 3 | 0 |
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| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 1 |
| 2003 | 8 | 10 |
| 2004 | 6 | 9 |
| 2005 | 4 | 4 |
| 2006 | 3 | 6 |
| 2007 | 6 | 6 |
| 2008 | 2 | 4 |
| 2009 | 4 | 8 |
| 2010 | 4 | 2 |
| 2011 | 6 | 6 |
| 2012 | 5 | 7 |
| 2013 | 5 | 10 |
| 2014 | 15 | 17 |
| 2015 | 6 | 15 |
| 2016 | 13 | 10 |
| 2017 | 14 | 6 |
| 2018 | 7 | 8 |
| 2019 | 6 | 11 |
| 2020 | 8 | 12 |
| 2021 | 13 | 13 |
| 2022 | 12 | 9 |
| 2023 | 11 | 15 |
| 2024 | 6 | 3 |
| 2025 | 7 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for electrospray emission20 Jan 2026US 12,531,226 B2Accion Systems, Inc.
- Atmospheric pressure ionisation source2 Dec 2025US 12,488,976 B2Micromass UK Limited
- Electrospray ion source assembly25 Nov 2025US 12,482,643 B2DH Technologies Development Pte. Ltd.
- Ionization device, mass spectrometry system, and ionization method18 Nov 2025US 12,476,100 B2Biochromato, Inc.
- Apparatus and methods for detection and quantification of elements in molecules3 Jun 2025US 12,322,584 B2Georgetown University
- Simultaneous detection of a plurality of compounds using dual ionization source13 Aug 2026US 2026/0235570 A1Shimadzu Corporation
- Interface and method for the preparation of material for transfer into a mass spectrometer13 Aug 2026US 2026/0237624 A1Centre Hospitalier Universitaire De Lille
- Sample Digestion for Mass Spectrometry30 Jul 2026US 2026/0219146 A1The Rosalind Franklin Institute
- Micro-ionizer for mass spectrometry6 Nov 2025US 2025/0343037 A1Carnegie Mellon University
- Apparatus and methods for detection and quantification of elements in molecules23 Oct 2025US 2025/0329523 A1Georgetown University
Most cited
By later US patents
- Corona discharge ion source for analytical instruments97US 6,225,623 B1Graseby Dynamics Limited · 2001
- Apparatus for producing sample ions93US 4,546,253 A1985
- Ion generation using wetted porous material78US 8,859,956 B2Purdue Research Foundation · 2014
- Corona discharge ionization source73US 5,684,300 A1997
- Ionizing analysis apparatus73US 5,945,678 AHamamatsu Photonics K.K. · 1999