H01J 35/04
Electrodes
Official title: Electrodes {; Mutual position thereof; Constructional adaptations therefor}
H01J35/04 (Electrodes) appears on 2,182 US grants and 1,821 published applications in this corpus.
Search patents in H01J- Granted patents
- 2,182
- Published applications
- 1,821
- Assignees
- 555
- Inventors
- 2,918
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 16 | 0 |
| 1978 | 26 | 0 |
| 1979 | 13 | 0 |
| 1980 | 18 | 0 |
| 1981 | 19 | 0 |
| 1982 | 24 | 0 |
| 1983 | 14 | 0 |
| 1984 | 14 | 0 |
| 1985 | 14 | 0 |
| 1986 | 24 | 0 |
| 1987 | 31 | 0 |
| 1988 | 20 | 0 |
| 1989 | 25 | 0 |
| 1990 | 31 | 0 |
| 1991 | 30 | 0 |
| 1992 | 25 | 0 |
| 1993 | 31 | 0 |
| 1994 | 15 | 0 |
| 1995 | 21 | 0 |
| 1996 | 32 | 0 |
| 1997 | 29 | 0 |
| 1998 | 19 | 0 |
| 1999 | 23 | 0 |
| 2000 | 30 | 0 |
| 2001 | 38 | 13 |
| 2002 | 57 | 35 |
| 2003 | 37 | 28 |
| 2004 | 28 | 46 |
| 2005 | 28 | 49 |
| 2006 | 49 | 47 |
| 2007 | 49 | 61 |
| 2008 | 50 | 56 |
| 2009 | 45 | 70 |
| 2010 | 56 | 96 |
| 2011 | 53 | 84 |
| 2012 | 57 | 77 |
| 2013 | 58 | 65 |
| 2014 | 49 | 106 |
| 2015 | 83 | 111 |
| 2016 | 91 | 92 |
| 2017 | 92 | 92 |
| 2018 | 78 | 83 |
| 2019 | 94 | 96 |
| 2020 | 127 | 97 |
| 2021 | 87 | 89 |
| 2022 | 70 | 76 |
| 2023 | 67 | 67 |
| 2024 | 65 | 69 |
| 2025 | 70 | 77 |
| 2026 | 41 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Patterned X-ray emitting target29 Sep 2026US 12,749,642 B2Nova Measuring Instruments Ltd.
- Method and arrangement for an X-ray source29 Sep 2026US 12,750,938 B2Excillum AB
- X-ray tube22 Sep 2026US 12,744,177 B2Hamamatsu Photonics K.K.
- X-ray tube with stable electron beam15 Sep 2026US 12,738,440 B2Moxtek, Inc.
- Smart power system and method to protect an X-ray tube during a power outage15 Sep 2026US 12,739,960 B2GE Precision Healthcare LLC
- X-ray devices with nanotube emitters and methods of forming8 Oct 2026US 2026/0311951 A1Varex Imaging Corporation
- Improvements in and relating to x-ray sources8 Oct 2026US 2026/0311952 A1Kratos Analytical Limited
- Planar filament with focused, central electron emission24 Sep 2026US 2026/0290737 A1Moxtek, Inc.
- X-ray tubes, enclosures for x-ray tubes, and methods of manufacture24 Sep 2026US 2026/0290739 A1Varex Imaging Corporation
- Air tolerant photocathode electron gun17 Sep 2026US 2026/0276961 A1Nova Measuring Instruments Ltd.
Most cited
By later US patents
- X-ray source with shaped radiation pattern254US 5,422,926 APhotoelectron Corporation · 1995
- X-ray generating mechanism using electron field emission cathode190US 6,553,096 B1University of North Carolina - Chapel Hill · 2003
- Liquid cooled anode x-ray tubes179US 4,622,687 A1986
- Miniature x-ray source178US 5,729,583 AThe United States of America as represented by the Secretary of Commerce · 1998
- X-ray generator174US 6,188,747 B1Heimann Systems GmbH · 2001