H01J 2229/4879
Non-symmetric about field scanning axis
Official title: non-symmetric about field scanning axis
H01J2229/4879 (Non-symmetric about field scanning axis) appears on 21 US grants and 4 published applications in this corpus.
Search patents in H01J- Granted patents
- 21
- Published applications
- 4
- Assignees
- 13
- Inventors
- 54
- Latest grant
- 4 Nov 2003
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 2 |
| 2003 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electron gun for color cathode ray tubes with side electron-beam-passing apertures of plurality of circular arcs having different radii of curvature4 Nov 2003US 6,642,646 B1Orion Electric Co., Ltd.
- Electron gun in CRT21 Oct 2003US 6,635,982 B2LG Electronics Inc.
- In-line type electron gun in cathode ray tube24 Jun 2003US 6,583,548 B2LG Electronics Inc.
- Color cathode-ray tube having electrostatic quadrupole lens exhibiting different intensities for electron beams4 Jun 2002US 6,400,105 B2Hitachi, Ltd.
- Color cathode-ray tube28 May 2002US 6,396,221 B1Hitachi, Ltd.
- Electrode of electron gun for cathode ray tube12 Dec 2002US 2002/0185954 A1
- Electron gun in CRT27 Jun 2002US 2002/0079818 A1LG Electronics Inc.
- In -line type electron gun in cathode ray tube13 Dec 2001US 2001/0050525 A1LG Electronics Inc.
- Color cathode-ray tube having electrostatic quadrupole lens exhibiting different intensities for electron beams16 Aug 2001US 2001/0013760 A1Hitachi, Ltd.
Most cited
By later US patents
- Cathode ray tube apparatus with quadrupole electrode structure35US 4,886,999 AMitsubishi Denki Kabushiki Kaishi · 1989
- Electron gun system with dynamic convergence control29US 5,027,043 AZenith Electronics Corporation · 1991
- Color CRT system and process with dynamic quadrupole lens structure24US 5,036,258 AZenith Electronics Corporation · 1991
- In-line electron gun structure for color cathode ray tube having oblong apertures17US 4,766,344 ANorth American Philips Consumer Electronics Corp. · 1988
- Self-convergent electron gun system16US 5,055,749 AZenith Electronics Corporation · 1991