H04N 3/122
Using cathode rays
Official title: {using cathode rays, e.g. multivision}
H04N3/122 (Using cathode rays) appears on 24 US grants and 1 published applications in this corpus.
Search patents in H04N- Granted patents
- 24
- Published applications
- 1
- Assignees
- 7
- Inventors
- 37
- Latest grant
- 29 Apr 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron beam apparatus and image-forming apparatus29 Apr 2003US 6,555,957 B1Canon Kabushiki Kaisha
- Electron beam apparatus and image-forming apparatus1 Oct 2002US 6,459,207 B1Canon Kabushiki Kaisha
- Electron beam apparatus and image-forming apparatus19 Feb 2002US 6,348,761 B1Canon Kabushiki Kaisha
- Ferroelectric liquid crystal apparatus having a threshold voltage greater than the polarization value divided by the insulating layer capacitance26 Dec 1995US 5,479,283 ACanon Kabushiki Kaisha
- Liquid crystal apparatus with gradation information signals and DC bias7 Mar 1995US 5,396,352 ACanon Kabushiki Kaisha
Most cited
By later US patents
- Video display system98US 4,649,432 ASony Corporation · 1987
- Ferroelectric liquid crystal apparatus having a threshold voltage greater than the polarization value divided by the insulating layer capacitance39US 5,479,283 ACanon Kabushiki Kaisha · 1995
- Flatscreen29US 4,531,122 A1985
- Display device for displaying both video and graphic or character images24US 4,498,081 AMitsubishi Denki Kabushiki Kaisha · 1985
- Electron beam apparatus and image-forming apparatus20US 6,348,761 B1Canon Kabushiki Kaisha · 2002