H01J 49/42
Stability-of-path spectrometers
Official title: Stability-of-path spectrometers, e.g. monopole, quadrupole, multipole, farvitrons
H01J49/42 (Stability-of-path spectrometers) appears on 1,901 US grants and 1,900 published applications in this corpus.
Search patents in H01J- Granted patents
- 1,901
- Published applications
- 1,900
- Assignees
- 430
- Inventors
- 1,939
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 7 | 0 |
| 1988 | 10 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 13 | 0 |
| 1993 | 15 | 0 |
| 1994 | 16 | 0 |
| 1995 | 28 | 0 |
| 1996 | 15 | 0 |
| 1997 | 21 | 0 |
| 1998 | 24 | 0 |
| 1999 | 13 | 0 |
| 2000 | 27 | 0 |
| 2001 | 13 | 7 |
| 2002 | 16 | 28 |
| 2003 | 33 | 39 |
| 2004 | 41 | 52 |
| 2005 | 41 | 60 |
| 2006 | 53 | 46 |
| 2007 | 47 | 57 |
| 2008 | 52 | 66 |
| 2009 | 43 | 71 |
| 2010 | 45 | 51 |
| 2011 | 45 | 60 |
| 2012 | 45 | 40 |
| 2013 | 69 | 70 |
| 2014 | 76 | 89 |
| 2015 | 92 | 83 |
| 2016 | 85 | 108 |
| 2017 | 83 | 109 |
| 2018 | 98 | 76 |
| 2019 | 95 | 93 |
| 2020 | 95 | 123 |
| 2021 | 95 | 114 |
| 2022 | 107 | 121 |
| 2023 | 70 | 90 |
| 2024 | 97 | 112 |
| 2025 | 81 | 80 |
| 2026 | 49 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mass spectral encoding6 Oct 2026US 12,755,953 B2Micromass UK Limited
- Systems and methods for recovering organic contaminants from semiconducting wafers29 Sep 2026US 12,749,667 B2Elemental Scientific, Inc.
- Charge detection mass spectrometry using multiple accumulation events22 Sep 2026US 12,742,754 B2Thermo Finnigan LLC
- Method of operating a multipole device22 Sep 2026US 12,744,197 B2Thermo Fisher Scientific (Bremen) GmbH
- Data independent acquisition of production spectra and reference spectra library matching15 Sep 2026US 12,738,469 B2DH Technologies Development Pte. Ltd.
- Beam Homogenization for Trapped Ion Processing with Discrete Ion Packets8 Oct 2026US 2026/0311987 A1DH Technologies Development Pte. Ltd.
- Method of scheduling ions for analysis8 Oct 2026US 2026/0311990 A1Thermo Finnigan LLC
- Mass spectrometer having parallel precursor ion isolation1 Oct 2026US 2026/0298873 A1Micromass UK Limited
- Improved spectrometer or imaging assembly1 Oct 2026US 2026/0299058 A1Npl Management Limited
- Mass spectrometer and method1 Oct 2026US 2026/0302150 A1Truemass Ltd
Most cited
By later US patents
- Methods and apparatus for tandem mass spectrometry255US 6,107,623 AMicromass Limited · 2000
- Ion trap mass spectrometer system and method218US 5,420,425 AFinnigan Corporation · 1995
- Spectrometer with axial field183US 5,847,386 AMDS Inc. · 1998
- Method of mass analyzing a sample by use of a quadrupole ion trap179US 4,540,884 AFinnigan Corporation · 1985
- Axial ejection in a multipole mass spectrometer152US 6,177,668 B1MDS Inc. · 2001