H01J 27/028
Negative ion sources
Official title: {Negative ion sources}
H01J27/028 (Negative ion sources) appears on 75 US grants and 43 published applications in this corpus.
Search patents in H01J- Granted patents
- 75
- Published applications
- 43
- Assignees
- 45
- Inventors
- 132
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 3 |
| 2011 | 4 | 3 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 3 | 6 |
| 2015 | 4 | 1 |
| 2016 | 5 | 3 |
| 2017 | 4 | 6 |
| 2018 | 4 | 5 |
| 2019 | 4 | 1 |
| 2020 | 0 | 1 |
| 2021 | 2 | 0 |
| 2022 | 1 | 2 |
| 2023 | 0 | 3 |
| 2024 | 3 | 0 |
| 2025 | 0 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Negative ion source and negative ion generation method24 Feb 2026US 12,558,663 B2Japan Atomic Energy Agency
- Systems, devices, and methods for ion beam modulation26 Nov 2024US 12,154,750 B2Tae Technologies, Inc.
- Cyclotron having continuously variable energy output1 Oct 2024US 12,106,925 B2APPLIED Materials.Inc.
- Facial beautifying and care apparatus23 Apr 2024US 11,964,149 B2Biboting International Co., Ltd.
- Systems and methods for continuously supplying negative ions using multi-pulsed plasma sources17 May 2022US 11,337,296 B2Korea Atomic Energy Research Institute
- A method and arrangement for negative ion production18 Dec 2025US 2025/0385063 A1JyväSkyläN Yliopisto
- Systems, devices, and methods for ion beam modulation15 May 2025US 2025/0157776 A1Tae Technologies, Inc.
- Axial ion source with magnetic field adjustment30 Jan 2025US 2025/0037985 A1
- Negative ion source and negative ion generation method17 Aug 2023US 2023/0256408 A1Japan Atomic Energy Agency
- Facial beautifying and care apparatus20 Jul 2023US 2023/0225928 A1Biboting International Co., Ltd.
Most cited
By later US patents
- Apparatus for acceleration and application of negative ions and electrons155US 5,073,913 AAcctek Associates · 1991
- Negative ion source method and apparatus used in conjunction with a charged particle cancer therapy system108US 7,943,913 B22011
- Apparatus for acceleration and application of negative ions and electrons101US 4,992,746 AAcctek Associates · 1991
- Apparatus and methods for ion implantation67US 4,847,504 AAPPLIED Materials.Inc. · 1989
- Ultra-sensitive molecular identifier55US 5,438,194 AHigh Voltage Engineering Europa B.V. · 1995