H01J 2229/502
Three beam guns
Official title: Three beam guns, e.g. for colour CRTs
H01J2229/502 (Three beam guns) appears on 5 US grants and 2 published applications in this corpus.
Search patents in H01J- Granted patents
- 5
- Published applications
- 2
- Assignees
- 4
- Inventors
- 10
- Latest grant
- 21 Dec 2004
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Structure of electron gun for color cathode ray tube21 Dec 2004US 6,833,680 B2LG. Philips Displays Korea Co., Ltd.
- Color cathode ray tube having an improved first grid electrode16 Feb 1999US 5,872,423 AHitachi Electronic Devices Co., Ltd.
- Electric power source assembly for focusing electrode of color cathode ray tube apparatus23 Jun 1998US 5,770,929 AMitsubishi Denki Kabushiki Kaisha
- Electron gun and method of assembling it14 Oct 1997US 5,677,590 AHitachi Electronic Devices Co., Ltd.
- Electron gun and method of assembling it12 Nov 1996US 5,574,330 AHitachi, Ltd.
Most cited
By later US patents