H01J 31/20
For displaying images or patterns in two or more colours
Official title: for displaying images or patterns in two or more colours {(circuits for colour television H04N9/16 - H04N9/28)}
H01J31/20 (For displaying images or patterns in two or more colours) appears on 126 US grants and 28 published applications in this corpus.
Search patents in H01J- Granted patents
- 126
- Published applications
- 28
- Assignees
- 43
- Inventors
- 182
- Latest grant
- 11 Sep 2007
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 3 |
| 2002 | 11 | 16 |
| 2003 | 8 | 3 |
| 2004 | 2 | 4 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Subpixel rendering for cathode ray tube devices11 Sep 2007US 7,268,748 B2Clairvoyante, Inc
- Tracking picture tube10 May 2005US 6,891,340 B2Koninklijke Philips Electronics N. V.
- Color pixel element cathode ray tube8 Mar 2005US 6,864,625 B2Trepton Research Group, Inc.
- Cathode ray tube and method of displaying picture23 Nov 2004US 6,822,699 B2Sony Corporation
- Asymmetric space-saving cathode ray tube with magnetically deflected electron beam6 Jan 2004US 6,674,230 B1Sarnoff Corporation
- Display assembly for an electronic device that includes a blue light protective transparency19 Jan 2023US 2023/0020025 A1PPG Industries Ohio, Inc.
- Color cathode ray tube apparatus24 Nov 2005US 2005/0258731 A1Matsushita Toshiba Picture Display Co., Ltd.
- Subpixel rendering for cathode ray tube devices25 Nov 2004US 2004/0232844 A1Clairvoyante, Inc
- Color pixel element cathode ray tube11 Nov 2004US 2004/0222730 A1Trepton Research Group, Inc.
- Side projection type cathode ray tube9 Sep 2004US 2004/0174111 A1
Most cited
By later US patents
- Color display tube50US 5,198,730 A1993
- Large screen video display comprising a matrix array of cathode-ray tubes operated at increased vertical and horizontal scan rates32US 4,635,105 AThomson-CSF · 1987
- Face panel assembly for a color cathode ray tube26US 4,100,451 AZenith Radio Corporation · 1978
- Guided beam flat display device24US 4,028,582 ARCA Corporation · 1977
- Shadow mask support in a color cathode ray tube23US 4,308,485 AVideocolor, S. A. · 1981