H01J 31/12
With luminescent screen
Official title: with luminescent screen
H01J31/12 (With luminescent screen) appears on 2,059 US grants and 1,476 published applications in this corpus.
Search patents in H01J- Granted patents
- 2,059
- Published applications
- 1,476
- Assignees
- 341
- Inventors
- 2,424
- Latest grant
- 17 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 23 | 0 |
| 1978 | 32 | 0 |
| 1979 | 28 | 0 |
| 1980 | 24 | 0 |
| 1981 | 22 | 0 |
| 1982 | 19 | 0 |
| 1983 | 15 | 0 |
| 1984 | 17 | 0 |
| 1985 | 18 | 0 |
| 1986 | 23 | 0 |
| 1987 | 17 | 0 |
| 1988 | 28 | 0 |
| 1989 | 21 | 0 |
| 1990 | 31 | 0 |
| 1991 | 16 | 0 |
| 1992 | 28 | 0 |
| 1993 | 36 | 0 |
| 1994 | 22 | 0 |
| 1995 | 38 | 0 |
| 1996 | 61 | 0 |
| 1997 | 69 | 0 |
| 1998 | 100 | 0 |
| 1999 | 93 | 0 |
| 2000 | 87 | 0 |
| 2001 | 80 | 27 |
| 2002 | 86 | 92 |
| 2003 | 88 | 87 |
| 2004 | 84 | 104 |
| 2005 | 71 | 158 |
| 2006 | 86 | 210 |
| 2007 | 101 | 246 |
| 2008 | 98 | 157 |
| 2009 | 79 | 115 |
| 2010 | 118 | 99 |
| 2011 | 98 | 73 |
| 2012 | 84 | 47 |
| 2013 | 44 | 20 |
| 2014 | 19 | 15 |
| 2015 | 17 | 11 |
| 2016 | 9 | 0 |
| 2017 | 5 | 8 |
| 2018 | 5 | 3 |
| 2019 | 3 | 1 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 31/123Flat display tubes1,812
- H01J 31/15With ray or beam selectively directed to luminescent anode segments174
- H01J 31/128Provided with control means permitting the electron beam to reach selected parts18
- H01J 31/122Direct viewing storage tubes without storage grid17
- H01J 31/18With image written by a ray or beam on a grid-like charge-accumulating6
- H01J 31/121Tubes for oscillography5
- H01J 31/16With mask carrying a number of selectively displayable signs3
- H01J 31/14Magic-eye or analogous tuning indicators0
Recent patents
- Process for fabricating high current field emission cathode containing nanomaterials17 Jun 2025US 12,334,296 B1A&M Consulting, LLC
- Semi-transparent detector array for UV/near-UV detection22 Oct 2024US 12,125,658 B2L3Harris Technologies, Inc.
- Devices having an electron emitting structure24 Aug 2021US 11,101,095 B2Nano-X Imaging Ltd.
- Smart TV with cloud service9 Jun 2020US 10,681,430 B2
- Wiring structure for display device30 Jul 2019US 10,365,520 B2Kobe Steel, Ltd.
- Electron emission source18 Jun 2026US 2026/0171342 A1Infovion Inc.
- Semi-transparent detector array for uv/near-uv detection28 Nov 2024US 2024/0395489 A1L3Harris Technologies, Inc.
- Semi-transparent detector array for uv/near-uv detection4 May 2023US 2023/0139708 A1L3Harris Technologies, Inc.
- Devices having an electron emitting structure20 Jun 2019US 2019/0189383 A1Nano-X Imaging Ltd.
- Smart TV with Cloud Service22 Nov 2018US 2018/0338114 A1
Most cited
By later US patents
- Light-emitting device having light-reflective layer formed with, or/and adjacent to, material that enhances device performance211US 6,630,786 B2Candescent Intellectual Property Services, Inc. · 2003
- Matrix-addressed flat panel display199US 4,857,799 ASRI International · 1989
- Field emission cathode based flat panel display having polyimide spacers186US 5,063,327 AColoray Display Corporation · 1991
- Spacers for field emission display fabricated via self-aligned high energy ablation175US 5,232,549 AMicron Technology, Inc. · 1993
- Field emission cold-cathode device169US 6,097,138 AKabushiki Kaisha Toshiba · 2000