H01J 49/408
With multiple changes of direction
Official title: {with multiple changes of direction, e.g. by using electric or magnetic sectors, closed-loop time-of-flight}
H01J49/408 (With multiple changes of direction) appears on 92 US grants and 88 published applications in this corpus.
Search patents in H01J- Granted patents
- 92
- Published applications
- 88
- Assignees
- 26
- Inventors
- 81
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 4 | 10 |
| 2006 | 4 | 3 |
| 2007 | 4 | 3 |
| 2008 | 4 | 4 |
| 2009 | 3 | 3 |
| 2010 | 2 | 6 |
| 2011 | 5 | 11 |
| 2012 | 6 | 2 |
| 2013 | 6 | 1 |
| 2014 | 2 | 4 |
| 2015 | 4 | 3 |
| 2016 | 1 | 1 |
| 2017 | 6 | 4 |
| 2018 | 6 | 4 |
| 2019 | 3 | 4 |
| 2020 | 2 | 5 |
| 2021 | 5 | 7 |
| 2022 | 7 | 6 |
| 2023 | 4 | 2 |
| 2024 | 6 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for multistage mass spectrometry utilizing an electrostatic ion trap23 Jun 2026US 12,665,178 B2DH Technologies Development Pte. Ltd.
- Method of selecting ions by ion mobility separation and isolation of ions26 Aug 2025US 12,399,151 B2Micromass UK Limited
- Multi-turn time-of-flight mass spectrometer26 Nov 2024US 12,154,778 B2Shimadzu Corporation
- Time of flight mass analyser with spatial focussing29 Oct 2024US 12,131,895 B2Micromass UK Limited
- Ion entry/exit device30 Jul 2024US 12,051,583 B2Micromass UK Limited
- Ion entry/exit device24 Oct 2024US 2024/0355606 A1Micromass UK Limited
- Compact laser ion source apparatus and method7 Mar 2024US 2024/0079226 A1
- Systems and methods for multistage mass spectrometry utilizing an electrostatic ion trap14 Dec 2023US 2023/0402272 A1DH Technologies Development Pte. Ltd.
- Ion Entry/Exit Device1 Jun 2023US 2023/0170203 A1Micromass UK Limited
- Mass spectrometer22 Dec 2022US 2022/0406588 A1Shimadzu Corporation
Most cited
By later US patents
- Particle analyzer apparatus and method55US 5,128,543 ACharles Evans & Associates · 1992
- Multi-reflecting time-of-flight mass spectrometer with isochronous curved ion interface51US 7,326,925 B2Leco Corporation · 2008
- Time-of-flight mass spectrometer38US 6,300,625 B1JEOL Ltd. · 2001
- Method of multi-turn time-of-flight mass analysis31US 6,949,736 B2JEOL Ltd. · 2005
- Method and apparatus for time-of-flight mass spectrometry28US 7,504,620 B2JEOL Ltd. · 2009