H01J 2229/56
Correction of beam optics
H01J2229/56 (Correction of beam optics) appears on 161 US grants and 59 published applications in this corpus.
Search patents in H01J- Granted patents
- 161
- Published applications
- 59
- Assignees
- 52
- Inventors
- 268
- Latest grant
- 11 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 11 | 0 |
| 2001 | 13 | 4 |
| 2002 | 21 | 15 |
| 2003 | 13 | 7 |
| 2004 | 8 | 10 |
| 2005 | 9 | 14 |
| 2006 | 7 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Charged particle beam device with transient signal correction during beam blanking11 Feb 2020US 10,559,447 B2Hitachi High-Technologies Corporation
- Compact modular cathode11 Jun 2019US 10,319,554 B2Massachusetts Institute of Technology
- Method for correcting electronic proximity effects using off-center scattering functions29 Dec 2015US 9,224,577 B2Aselta Nanographics
- Electron microscope24 Sep 2013US 8,541,755 B1JEOL Ltd.
- Cathode ray tube20 Jul 2010US 7,759,852 B2LG Electronics Inc.
- Charged particle beam device19 Apr 2018US 2018/0106610 A1Hitachi High-Technologies Corporation
- Compact modular cathode21 Dec 2017US 2017/0365438 A1Massachusetts Institute of Technology
- Method for correcting electronic proximity effects using off-center scattering functions21 Feb 2013US 2013/0043389 A1Aselta Nanographics
- Magnetic Field Compensation Apparatus for Cathode Ray Tube30 Apr 2009US 2009/0108729 A1
- Color cathode-ray tube apparatus27 Sep 2007US 2007/0222359 A1Matsushita Toshiba Picture Display Co., Ltd.
Most cited
By later US patents
- Astigmatic focus correction circuit23US 3,961,223 AUnited Technologies Corporation · 1976
- Cathode ray tube with low dynamic correction voltage20US 5,610,481 AHitachi, Ltd. · 1997
- In-line color picture tube apparatus with dynamic convergence correction device18US 4,642,527 AHitachi, Ltd. · 1987
- Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns18US 4,725,763 AHitachi, Ltd. · 1988
- Deflection yoke apparatus15US 4,547,707 ADenki Onkyo Co., Ltd. · 1985