H01J 3/18
Electrostatic lenses
H01J3/18 (Electrostatic lenses) appears on 37 US grants and 32 published applications in this corpus.
Search patents in H01J- Granted patents
- 37
- Published applications
- 32
- Assignees
- 33
- Inventors
- 79
- Latest grant
- 7 Dec 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 2 |
| 2011 | 3 | 1 |
| 2012 | 2 | 1 |
| 2013 | 2 | 7 |
| 2014 | 4 | 9 |
| 2015 | 7 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron gun, electron beam applicator, method for releasing electrons using electron gun, and method for adjusting focal position of electron beam7 Dec 2021US 11,195,685 B2Photo electron Soul Inc.
- Electron gun, X-ray generation apparatus, and X-ray imaging apparatus6 Apr 2021US 10,971,322 B2Canon Anelva Corporation
- Electron gun and radiation generating apparatus11 Sep 2018US 10,074,503 B2Siemens Aktiengesellschaft
- Robust electrode with septum rod for biased X-ray tube cathode24 Jul 2018US 10,032,595 B2General Electric Company
- X-ray tube16 May 2017US 9,653,248 B2Toshiba Electron Tubes & Devices Co., Ltd.
- Electron gun, electron beam application device, method for emitting electron using electron gun, and electron beam focal position adjustment method6 May 2021US 2021/0134551 A1Photo electron Soul Inc.
- Electron gun, x-ray generation apparatus, and x-ray imaging apparatus13 Aug 2020US 2020/0258710 A1Canon Anelva Corporation
- Robust Electrode With Septum Rod For Biased X-Ray Tube Cathode31 Aug 2017US 2017/0250051 A1General Electric Company
- Inverse Photoelectron Spectroscopy Device13 Jul 2017US 2017/0199131 A1
- Electron gun and radiation generating apparatus6 Oct 2016US 2016/0293375 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Illumination system for electron beam lithography tool63US 6,333,508 B1Elith LLC · 2001
- Electrostatic lens array44US 8,748,842 B2Canon Kabushiki Kaisha · 2014
- Unipotential lens assembly for charged particle beam tubes and method for applying correction potentials thereto41US 4,338,548 AControl Data Corporation · 1982
- Electrode of electrostatic lens and method of manufacturing the same32US 8,963,099 B2Canon Kabushiki Kaisha · 2015
- Method and apparatus for producing electrostatic fields by surface currents on resistive materials with applications to charged particle optics and energy analysis29US 4,126,781 AExtranuclear Laboratories, Inc. · 1978