H01J 29/56
Arrangements for controlling cross-section of ray or beam
Official title: Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses {(H01J29/467 takes precedence)}
H01J29/56 (Arrangements for controlling cross-section of ray or beam) appears on 118 US grants and 18 published applications in this corpus.
Search patents in H01J- Granted patents
- 118
- Published applications
- 18
- Assignees
- 47
- Inventors
- 194
- Latest grant
- 4 Oct 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 5 | 1 |
| 2004 | 1 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 3 |
| 2018 | 1 | 0 |
| 2019 | 2 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electron beam column for three-dimensional printing device, three-dimensional printing device, and three-dimensional printing method4 Oct 2022US 11,458,561 B2Advantest Corporation
- Time-of-flight mass spectrometer and method for improving mass and spatial resolution of an image1 Mar 2022US 11,264,229 B1
- Beam position monitors for medical radiation machines29 Dec 2020US 10,879,028 B2Varian Medical Systems, Inc.
- Methods and devices for producing an electron beam28 Jul 2020US 10,727,022 B2Ariel Scientific Innovations Ltd.
- Superconducting magnetic field stabilizer3 Dec 2019US 10,497,503 B2Forschungszentrum Juelich GmbH
- Particle beam system23 May 2024US 2024/0170248 A1
- Time-of-flight mass spectrometer and method for improving mass and spatial resolution of an image17 Feb 2022US 2022/0051886 A1
- Electron beam column for three-dimensional printing device, three-dimensional printing device, and three-dimensional printing method7 Nov 2019US 2019/0337085 A1Advantest Corporation
- Methods and devices for producing an electron beam5 Sep 2019US 2019/0272968 A1Ariel Scientific Innovations Ltd.
- Compact modular cathode21 Dec 2017US 2017/0365438 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Electron gun with chain-link main lens for static correction of electron beam astigmatism28US 5,488,265 AChunghwa Picture Tubes, Ltd. · 1996
- Cathode ray tube24US 4,772,827 AHitachi, Ltd. · 1988
- Astigmatic focus correction circuit23US 3,961,223 AUnited Technologies Corporation · 1976
- Cathode-ray tube device20US 4,473,775 AMatsushita Electronics Corporation · 1984
- Feedback CRT for use in a closed-loop correction system18US 4,456,853 ATektronix, Inc. · 1984