H04N 9/20
With more than one beam in a tube
Official title: with more than one beam in a tube
H04N9/20 (With more than one beam in a tube) appears on 23 US grants and 9 published applications in this corpus.
Search patents in H04N- Granted patents
- 23
- Published applications
- 9
- Assignees
- 20
- Inventors
- 33
- Latest grant
- 11 Dec 2007
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 4 |
| 2003 | 2 | 0 |
| 2004 | 1 | 4 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Color display pixel arrangements and addressing means11 Dec 2007US 7,307,646 B2Clairvoyante, Inc
- Subpixel rendering for cathode ray tube devices11 Sep 2007US 7,268,748 B2Clairvoyante, Inc
- Method and system for controlling electron beams from field emission cathodes14 Jun 2005US 6,906,470 B2Trepton Research Group, Inc.
- Multi-element field emission cathode7 Jun 2005US 6,903,519 B2Trepton Research Group, Inc.
- Method for forming an image on a screen of a cathode ray tube21 Dec 2004US 6,833,679 B2Trepton Research Group, Inc.
- Color display pixel arrangements and addressing means19 May 2005US 2005/0104908 A1ClairVoyante Laboratories, Inc.
- Subpixel rendering for cathode ray tube devices25 Nov 2004US 2004/0232844 A1Clairvoyante, Inc
- Method for forming an image on a screen of a cathode ray tube20 May 2004US 2004/0095082 A1Extreme Devices, Inc.
- Multi-element field emission cathode29 Jan 2004US 2004/0017143 A1Extreme Devices, Inc.
- Method and system for controlling electron beams from field emission cathodes29 Jan 2004US 2004/0017166 A1Extreme Devices, Inc.
Most cited
By later US patents
- Field sequential liquid crystal display with enhanced brightness75US 4,611,889 ATektronix, Inc. · 1986
- Stereoscopic color television system33US 4,541,007 A1985
- Automatic kinescope bias control system with digital signal processing17US 4,387,405 ARCA Corporation · 1983
- Multi-beam group electron gun for color CRT15US 5,350,978 AChunghwa Picture Tubes, Ltd. · 1994
- Color television CRT beam current correction circuit10US 4,200,882 AU. S. Philips Corporation · 1980