H01J 3/40
Arrangements for removing or diverting unwanted particles
Official title: Arrangements for removing or diverting unwanted particles, e.g. for negative ions or fringing electrons; Arrangements for velocity or mass selection
H01J3/40 (Arrangements for removing or diverting unwanted particles) appears on 30 US grants and 26 published applications in this corpus.
Search patents in H01J- Granted patents
- 30
- Published applications
- 26
- Assignees
- 37
- Inventors
- 92
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 3 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 2 |
| 2011 | 0 | 2 |
| 2012 | 3 | 0 |
| 2013 | 0 | 3 |
| 2014 | 2 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 3 |
| 2025 | 4 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mounted planar filament31 Mar 2026US 12,592,355 B2Moxtek, Inc.
- Ion guide electrode configurations for polarity-independent ion containment21 Oct 2025US 12,451,315 B2Thermo Finnigan LLC
- Particle transfer blocking device and lithography device using electron layer in vacuum system26 Aug 2025US 12,400,822 B2Derkwoo Semitech Co., Ltd.
- System and method for identifying, selecting and purifying particles19 Aug 2025US 12,390,765 B2The Trustees of Indiana University
- Device for controlling trapped ions having an electrode circuitry configured for device testing24 Jun 2025US 12,339,329 B2Infineon Technologies Austria AG
- Apparatus for generating ions10 Sep 2026US 2026/0269205 A1Thermo Fisher Scientific (Bremen) GmbH
- System and method for identifying, selecting and purifying particles6 Nov 2025US 2025/0339819 A1The Trustees of Indiana University
- Electrostatic energy filter module11 Sep 2025US 2025/0285825 A1Applied Materials Israel Ltd.
- Method of testing electrode circuitry of a device for controlling trapped ions28 Aug 2025US 2025/0271512 A1Infineon Technologies Austria AG
- Dry electron source environment17 Apr 2025US 2025/0125114 A1FEI Company
Most cited
By later US patents
- Ion trapping74US 6,744,042 B2Yeda Research and Development Co. Ltd. · 2004
- Charged particle beam irradiation apparatus21US 6,172,364 B2Kabushiki Kaisha Toshiba · 2001
- Electron beam control assembly for a scanning electron beam computed tomography scanner16US 4,625,150 AImatron, Inc. · 1986
- Electrostatic trap for particles entrained in an ion beam14US 6,534,775 B1Axcelis Technologies, Inc. · 2003
- Ballistic charge transport device with integral active contaminant absorption means13US 5,502,348 AMotorola, Inc. · 1996