H01J 1/52
Screens for shielding
Official title: Screens for shielding; Guides for influencing the discharge; Masks interposed in the electron stream
H01J1/52 (Screens for shielding) appears on 30 US grants and 21 published applications in this corpus.
Search patents in H01J- Granted patents
- 30
- Published applications
- 21
- Assignees
- 29
- Inventors
- 65
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 4 | 2 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 2 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- X-ray cathode shield7 Oct 2025US 12,437,957 B2GE Precision Healthcare LLC
- X-ray cathode shield30 Sep 2025US 12,431,318 B2GE Precision Healthcare LLC
- Electron gun, electron beam applicator, emission axis verification method for electron beam emitted from photocathode, and emission axis alignment method for electron beam emitted from photocathode3 Sep 2024US 12,080,507 B2Photo electron Soul Inc.
- Ion source repeller6 Dec 2022US 11,521,821 B2Axcelis Technologies, Inc.
- Stepped indirectly heated cathode with improved shielding8 Feb 2022US 11,244,800 B2Axcelis Technologies, Inc.
- X-ray cathode shield8 Jan 2026US 2026/0011523 A1GE Precision Healthcare LLC
- X-ray cathode shield1 Jan 2026US 2026/0004989 A1GE Precision Healthcare LLC
- X-ray cathode shield10 Oct 2024US 2024/0339284 A1GE Precision Healthcare LLC
- X-ray cathode shield10 Oct 2024US 2024/0339285 A1GE Precision Healthcare LLC
- Electron gun, electron beam application device, method for verifying emission axis of electron beam emitted from photocathode, and method for aligning emission axis of electron beam emitted from photocathode10 Nov 2022US 2022/0359146 A1Photo electron Soul Inc.
Most cited
By later US patents
- Display device105US 6,359,390 B1Mitsubishi Denki Kabushiki Kaisha · 2002
- Display device24US 6,160,349 AMitsubishi Denki Kabushiki Kaisha · 2000
- Fast start dimmable induction RF fluorescent light bulb23US 8,941,304 B2Lucidity Lights, Inc. · 2015
- Electromagnetic shielding envelopes from wound glassy metal filaments20US 4,189,618 AAllied Chemical Corporation · 1980
- Ion detection electrode arrangement15US 4,013,913 AHNU Systems, Inc. · 1977