H01J 31/08
Cathode ray tubes: having a screen on or from which an image
Official title: having a screen on or from which an image or pattern is formed, picked up, converted, or stored
H01J31/08 (Cathode ray tubes: having a screen on or from which an image) appears on 2,957 US grants and 1,753 published applications in this corpus.
Search patents in H01J- Granted patents
- 2,957
- Published applications
- 1,753
- Assignees
- 569
- Inventors
- 3,703
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 74 | 0 |
| 1977 | 72 | 0 |
| 1978 | 78 | 0 |
| 1979 | 52 | 0 |
| 1980 | 48 | 0 |
| 1981 | 47 | 0 |
| 1982 | 39 | 0 |
| 1983 | 32 | 0 |
| 1984 | 37 | 0 |
| 1985 | 30 | 0 |
| 1986 | 37 | 0 |
| 1987 | 54 | 0 |
| 1988 | 49 | 0 |
| 1989 | 41 | 0 |
| 1990 | 58 | 0 |
| 1991 | 39 | 0 |
| 1992 | 48 | 0 |
| 1993 | 57 | 0 |
| 1994 | 53 | 0 |
| 1995 | 53 | 0 |
| 1996 | 83 | 0 |
| 1997 | 83 | 0 |
| 1998 | 119 | 0 |
| 1999 | 110 | 0 |
| 2000 | 102 | 0 |
| 2001 | 103 | 31 |
| 2002 | 104 | 113 |
| 2003 | 105 | 101 |
| 2004 | 92 | 123 |
| 2005 | 85 | 178 |
| 2006 | 105 | 216 |
| 2007 | 110 | 256 |
| 2008 | 108 | 165 |
| 2009 | 87 | 125 |
| 2010 | 125 | 117 |
| 2011 | 110 | 83 |
| 2012 | 97 | 65 |
| 2013 | 52 | 31 |
| 2014 | 28 | 31 |
| 2015 | 31 | 16 |
| 2016 | 19 | 5 |
| 2017 | 14 | 16 |
| 2018 | 12 | 9 |
| 2019 | 13 | 11 |
| 2020 | 13 | 9 |
| 2021 | 9 | 6 |
| 2022 | 3 | 10 |
| 2023 | 8 | 13 |
| 2024 | 13 | 12 |
| 2025 | 10 | 8 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H01J 31/10Image or pattern display tubes, i.e. having electrical input and optical output2,197
- H01J 31/50Image-conversion or image-amplification tubes, i.e. having optical, x-ray, or analogous input, and507
- H01J 31/26Image pick-up tubes having an input of visible light and electric output177
- H01J 31/49Pick-up adapted for an input of electromagnetic radiation other than visible light74
- H01J 31/58Tubes for storage of image or information pattern or for conversion of41
- H01J 31/495Pick-up tubes adapted for an input of sonic, ultrasonic or mechanical vibrations5
Recent patents
- Nightvision tube module simplification23 Jun 2026US 12,665,156 B2L3Harris Technologies, Inc.
- Multi-zone display with transparency compensation16 Jun 2026US 12,658,124 B2L3Harris Technologies, Inc.
- Photocathode including nanostructures for extended wavelengths16 Jun 2026US 12,658,397 B2L3Harris Technologies, Inc.
- Photoelectric conversion device, electromagnetic wave detection device, photoelectric conversion method and electromagnetic wave detection method3 Mar 2026US 12,567,553 B2Danmarks Tekniske Universitet
- Electro-optical semi-transparent photonic up-converter3 Mar 2026US 12,567,554 B2L3Harris Technologies, Inc.
- Streak tube23 Jul 2026US 2026/0213112 A1Hamamatsu Photonics K.K.
- Electron emission source18 Jun 2026US 2026/0171342 A1Infovion Inc.
- Microchannel Plate, Preparation Method and Application Thereof1 Jan 2026US 2026/0005006 A1China Building Materials Academy Co., Ltd.
- Substrate stack epitaxies for photocathodes for extended wavelengths18 Dec 2025US 2025/0385062 A1L3Harris Technologies, Inc.
- Nightvision tube module simplification27 Nov 2025US 2025/0364203 A1L3Harris Technologies, Inc.
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