H01J 2229/4858
Parallelogram
Official title: parallelogram
H01J2229/4858 (Parallelogram) appears on 70 US grants and 6 published applications in this corpus.
Search patents in H01J- Granted patents
- 70
- Published applications
- 6
- Assignees
- 28
- Inventors
- 113
- Latest grant
- 16 May 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- High definition electron gun for cathode ray tube16 May 2006US 7,045,976 B2Thomson Licensing
- Structure of electron gun for color cathode ray tube7 Mar 2006US 7,009,333 B2LG. Philips Display Korea Co., Ltd.
- Color cathode ray tube19 Jul 2005US 6,919,675 B2Hitachi, Ltd.
- Electron gun for color cathode ray tube30 Nov 2004US 6,825,621 B2Samsung SDI.Co., Ltd.
- Cathode ray tube with low dynamic correction voltage14 Oct 2003US 6,633,142 B1Hitachi, Ltd.
- Electron gun for cathode-ray tube and color cathode-ray tube equipped with the same5 Jan 2006US 2006/0001349 A1Matsushita Toshiba Picture Display Co., Ltd.
- High definition electron gun for cathode ray tube25 Nov 2004US 2004/0232858 A1Thomson Licensing
- Structure of electron gun for color cathode ray tube29 Jul 2004US 2004/0145295 A1LG. Philips Display Korea Co., Ltd.
- Color cathode ray tube4 Mar 2004US 2004/0041511 A1Hitachi, Ltd.
- Electron gun for color cathode ray tube1 Aug 2002US 2002/0101161 A1Samsung SDI.Co., Ltd.
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
- 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
- Color cathode ray tube apparatus24US 5,113,112 AKabushiki Kaisha Toshiba · 1992