H01J 49/4275
Applying a non-resonant auxiliary oscillating voltage
Official title: {Applying a non-resonant auxiliary oscillating voltage, e.g. parametric excitation}
H01J49/4275 (Applying a non-resonant auxiliary oscillating voltage) appears on 26 US grants and 20 published applications in this corpus.
Search patents in H01J- Granted patents
- 26
- Published applications
- 20
- Assignees
- 17
- Inventors
- 48
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 4 | 2 |
| 2020 | 3 | 2 |
| 2021 | 1 | 2 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Ion shutting system with compensation electrodes for ion trap19 Aug 2025US 12,394,616 B2Infineon Technologies Austria AG
- Quadrupole devices27 Aug 2024US 12,074,019 B2Micromass UK Limited
- Quadrupole devices16 Jul 2024US 12,040,173 B2Micromass UK Limited
- Ion shuttling system with compensation electrodes for ion trap7 May 2024US 11,978,619 B2Infineon Technologies Austria AG
- Quadrupole devices14 Jun 2022US 11,361,958 B2Micromass UK Limited
- Ion shuttling system with compensation electrodes for ion trap23 Oct 2025US 2025/0329525 A1Infineon Technologies Austria AG
- Ion shutting system with compensation electrodes for ion trap27 Jun 2024US 2024/0213015 A1Infineon Technologies Austria AG
- Ion Shuttling System with Compensation Electrodes for Ion Trap25 Jan 2024US 2024/0030019 A1Infineon Technologies Austria AG
- Quadrupole devices19 May 2022US 2022/0157594 A1Micromass UK Limited
- Quadrupole devices12 May 2022US 2022/0148874 A1Micromass UK Limited
Most cited
By later US patents
- Ion trap mass spectrometer method and apparatus for improved sensitivity58US 5,291,017 AVarian Associates, Inc. · 1994
- Method of high mass resolution scanning of an ion trap mass spectrometer35US 5,397,894 AVarian Associates, Inc. · 1995
- Method and apparatus for selective axial ejection18US 7,084,398 B2Sciex Division of MDS Inc. · 2006
- Mass spectometry method with applied signal having off-resonance frequency15US 5,451,782 ATeledyne ET · 1995
- Ion-trap mass analyzing apparatus and ion trap mass analyzing method9US 6,140,641 AHitachi, Ltd. · 2000