H01J 49/36
Radio frequency spectrometers
Official title: Radio frequency spectrometers, e.g. Bennett-type spectrometers, Redhead-type spectrometers
H01J49/36 (Radio frequency spectrometers) appears on 263 US grants and 213 published applications in this corpus.
Search patents in H01J- Granted patents
- 263
- Published applications
- 213
- Assignees
- 111
- Inventors
- 378
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 3 |
| 2003 | 5 | 4 |
| 2004 | 3 | 5 |
| 2005 | 4 | 9 |
| 2006 | 7 | 6 |
| 2007 | 2 | 6 |
| 2008 | 4 | 8 |
| 2009 | 7 | 16 |
| 2010 | 9 | 6 |
| 2011 | 10 | 9 |
| 2012 | 7 | 3 |
| 2013 | 14 | 17 |
| 2014 | 21 | 24 |
| 2015 | 17 | 19 |
| 2016 | 17 | 7 |
| 2017 | 11 | 10 |
| 2018 | 6 | 12 |
| 2019 | 13 | 7 |
| 2020 | 11 | 8 |
| 2021 | 5 | 6 |
| 2022 | 6 | 9 |
| 2023 | 6 | 8 |
| 2024 | 7 | 6 |
| 2025 | 6 | 4 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Mass spectrometer calibration25 Aug 2026US 12,719,036 B2DH Technologies Development Pte. Ltd.
- Reducing AC effects on ions entering ion guide with pulsing auxiliary AC11 Aug 2026US 12,706,293 B2DH Technologies Development Pte. Ltd.
- Ion cyclotron resonance separator apparatus and method of use thereof20 Jan 2026US 12,531,228 B2
- Noninvasive detection of cancer originating in tissue outside the lung using exhaled breath6 Jan 2026US 12,517,110 B2University of Louisville Research Foundation, Inc.
- Nanoparticle baseline and particle detection threshold determination through iterative outlier removal25 Nov 2025US 12,482,642 B2Elemental Scientific, Inc.
- Systems and methods for lossless ion mobility spectromenter with axial diffusion constriction11 Jun 2026US 2026/0162952 A1Purdue Research Foundation
- Method for determining abundance of ions4 Dec 2025US 2025/0372362 A1Thermo Fisher Scientific (Bremen) GmbH
- Calibration of an Image Current-based Mass Analyzer Included in a Mass Spectrometer25 Sep 2025US 2025/0299939 A1Thermo Finnigan LLC
- Fourier transform ion cyclotron resonance mass spectrometry detection method for active dissolved organic matter26 Jun 2025US 2025/0210334 A1
- Apparatus and methods for spatially and temporarily sorting ions using rf travelling waves27 Feb 2025US 2025/0069879 A1Thermo Finnigan LLC
Most cited
By later US patents
- Tailored excitation for trapped ion mass spectrometry136US 4,761,545 AThe Ohio State University Research Foundation · 1988
- Apparatus and methods for continuous beam fourier transform mass spectrometry90US 6,452,168 B1UT-Battelle, LLC · 2002
- Fourier transform ion cyclothon resonance mass spectrometer with spatially separated sources and detector74US 4,686,365 AAmerican Cyanamid Company · 1987
- Mass spectrometer with reduced static electric field65US 4,931,640 A1990
- Fourier transform ion cyclotron resonance spectroscopy method and apparatus57US 3,937,955 ANicolet Technology Corporation · 1976