H01J 2229/0038
Active means
H01J2229/0038 (Active means) appears on 22 US grants and 2 published applications in this corpus.
Search patents in H01J- Granted patents
- 22
- Published applications
- 2
- Assignees
- 14
- Inventors
- 43
- Latest grant
- 8 Nov 2005
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cathode-ray tube, cathode-ray tube apparatus, image display apparatus, and coil unit8 Nov 2005US 6,963,181 B2Matsushita Electric Industrial Co., Ltd.
- Apparatus for automatically correcting for earth magnetic field effects on a monitor31 Dec 2002US 6,501,222 B1LG Electronics Inc.
- Purity adjustment device for video display appliance12 Jun 2001US 6,246,448 B1LG Electronics Inc.
- Automatic magnetic field compensator for a CRT27 Feb 2001US 6,194,848 B1Samsung Electronics Co., Ltd.
- Geomagnetic direction sensor9 Nov 1999US 5,982,176 ASony Corporation
Most cited
By later US patents
- Method and apparatus for dynamic magnetic field neutralization21US 4,963,789 AConrac SCD, Inc. · 1990
- External magnetic field compensator for a CRT18US 4,380,716 AHazeltine Corporation · 1983
- Closed loop bucking field system12US 4,996,461 AHughes Aircraft Company · 1991
- Geomagnetic direction sensor11US 5,982,176 ASony Corporation · 1999
- Magnetic cancelling apparatus for color cathode-ray tube10US 5,017,832 AMitsubishi Denki Kaisha Kaisha · 1991