H01J 2229/4875
Oval
Official title: oval
H01J2229/4875 (Oval) appears on 39 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 39
- Published applications
- 6
- Assignees
- 16
- Inventors
- 74
- Latest grant
- 14 Nov 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 2 |
| 2004 | 4 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Color Braun tube apparatus with non-circular electron beam passage aperture14 Nov 2006US 7,135,813 B2Matsushita Toshiba Picture Display Co., Ltd.
- In-line type electron gun and color picture tube apparatus using the same5 Oct 2004US 6,800,992 B2Matsushita Electric Industrial Co., Ltd.
- Inline electron gun and color cathode ray tube3 Aug 2004US 6,771,016 B2Matsushita Electric Industrial Co., Ltd.
- Color cathode ray tube having an improved electron gun4 May 2004US 6,731,056 B2Hitachi Device Engineering Co., Ltd.
- Electron gun in color CRT23 Mar 2004US 6,710,532 B2LG Electronics Inc.
- Color cathode ray tube apparatus24 Nov 2005US 2005/0258731 A1Matsushita Toshiba Picture Display Co., Ltd.
- Color braun tube apparatus20 Oct 2005US 2005/0231094 A1Matsushita Toshiba Picture Display Co., Ltd.
- In-line type electron gun and color picture tube apparatus using the same13 Nov 2003US 2003/0210001 A1Matsushita Electric Industrial Co., Ltd.
- Inline electron gun and color cathode ray tube6 Feb 2003US 2003/0025436 A1Matsushita Electric Industrial Co., Ltd.
- Electron gun in color CRT27 Jun 2002US 2002/0079819 A1LG Electronics Inc.
Most cited
By later US patents
- Cathode ray tube apparatus having focusing grids with horizontally and vertically oblong through holes35US 4,814,670 AMatsushita Electronics Corporation · 1989
- Cathode ray tube apparatus with quadrupole electrode structure35US 4,886,999 AMitsubishi Denki Kabushiki Kaishi · 1989
- Cathode ray tube with low dynamic correction voltage20US 5,610,481 AHitachi, Ltd. · 1997
- Electron gun for color picture tube19US 4,599,534 AHitachi, Ltd. · 1986
- Electron gun for color picture tube with electrostatic focussing lens13US 4,622,491 AHitachi, Ltd. · 1986