H01J 29/51
Arrangements for controlling convergence of a plurality of beams by means of
Official title: Arrangements for controlling convergence of a plurality of beams {by means of electric field only}
H01J29/51 (Arrangements for controlling convergence of a plurality of beams by means of) appears on 59 US grants and 12 published applications in this corpus.
Search patents in H01J- Granted patents
- 59
- Published applications
- 12
- Assignees
- 30
- Inventors
- 109
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 2 | 3 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Wireless communication apparatus and method for generating midamble and controlling transmission power11 Feb 2025US 12,224,892 B2Sony Group Corporation
- Low-blur electrostatic transfer lens for multi-beam electron gun24 Jan 2023US 11,562,879 B2NuFlare Technology America, Inc.
- Cathode mechanism of electron gun, electron gun, and electron beam writing apparatus30 Aug 2022US 11,430,628 B1NuFlare Technology, Inc.
- Wireless communication apparatus and method for generating midamble and controlling transmission power28 Jun 2022US 11,375,400 B2Sony Corporation
- Field emission X-ray tube and method of focusing electron beam using the same11 Aug 2015US 9,105,437 B2Electronics and Telecommunications Research Institute
- Wireless communication apparatus and method for generating midamble and controlling transmission power29 Sep 2022US 2022/0312265 A1Sony Group Corporation
- Cathode mechanism of electron gun, electron gun, and electron beam writing apparatus25 Aug 2022US 2022/0270842 A1NuFlare Technology, Inc.
- Low-blur electrostatic transfer lens for multi-beam electron gun17 Mar 2022US 2022/0084778 A1NuFlare Technology America, Inc.
- Wireless communication apparatus and method4 Jun 2020US 2020/0178120 A1Sony Corporation
- Field emission x-ray tube and method of focusing electron beam using the same19 Dec 2013US 2013/0336459 A1Electronics and Telecommunications Research Institute
Most cited
By later US patents
- Electron gun with astigmatic flare-reducing beam forming region32US 4,234,814 ARCA Corporation · 1980
- Electron gun system with dynamic convergence control29US 5,027,043 AZenith Electronics Corporation · 1991
- Electron emission device with picture element array25US 6,437,503 B1NEC Corporation · 2002
- Color CRT system and process with dynamic quadrupole lens structure24US 5,036,258 AZenith Electronics Corporation · 1991
- Color image display systems21US 4,620,133 ARCA Corporation · 1986