H01J 35/045
Electrodes for controlling the current of the cathode ray
Official title: {Electrodes for controlling the current of the cathode ray, e.g. control grids}
H01J35/045 (Electrodes for controlling the current of the cathode ray) appears on 123 US grants and 127 published applications in this corpus.
Search patents in H01J- Granted patents
- 123
- Published applications
- 127
- Assignees
- 63
- Inventors
- 258
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 2 | 9 |
| 2012 | 4 | 7 |
| 2013 | 7 | 6 |
| 2014 | 3 | 8 |
| 2015 | 7 | 13 |
| 2016 | 9 | 7 |
| 2017 | 7 | 6 |
| 2018 | 9 | 8 |
| 2019 | 9 | 10 |
| 2020 | 10 | 8 |
| 2021 | 10 | 8 |
| 2022 | 11 | 8 |
| 2023 | 5 | 5 |
| 2024 | 3 | 2 |
| 2025 | 6 | 8 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- X-ray tube22 Sep 2026US 12,744,177 B2Hamamatsu Photonics K.K.
- Cathode emission device and X-ray tube using same16 Jun 2026US 12,658,398 B2Wuhan United Imaging Healthcare Co., Ltd.
- X-ray apparatus, electron emission device and manufacturing method26 May 2026US 12,640,329 B2KETEK GmbH Halbleiter- und Reinraumtechnik
- Field emission X-ray source device21 Apr 2026US 12,609,262 B2VATECH Co., Ltd.
- Systems, devices, and methods for multisource volumetric spectral computed tomography2 Dec 2025US 12,487,193 B2The University of North Carolina at Chapel Hill
- Electron beam emission structure and field emission device3 Sep 2026US 2026/0260836 A1Meidensha Corporation
- X-ray tube6 Nov 2025US 2025/0343020 A1Hamamatsu Photonics K.K.
- X-ray tube control system and x-ray computed tomography imaging apparatus25 Sep 2025US 2025/0299900 A1Canon Medical Systems Corporation
- Reducing an electron emission of an electron emitter31 Jul 2025US 2025/0246393 A1Siemens Healthineers AG
- Systems and methods for computed tomography26 Jun 2025US 2025/0204879 A1GE Precision Healthcare LLC
Most cited
By later US patents
- X-ray tomographic inspection system for the identification of specific target items79US 8,451,974 B2Rapiscan Systems, Inc. · 2013
- Control means for heat load in X-ray scanning apparatus55US 7,564,939 B2Rapiscan Systems, Inc. · 2009
- X-ray tomographic inspection system for the identification of specific target items47US 8,885,794 B2Rapiscan Systems, Inc. · 2014
- X-ray tomographic inspection system for the identification of specific target items43US 9,158,030 B2Rapiscan Systems, Inc. · 2015
- Ring tube x-ray source42US 5,268,955 APicker International, Inc. · 1993