H01J 2229/003
Preventing or cancelling fields entering the enclosure
H01J2229/003 (Preventing or cancelling fields entering the enclosure) appears on 73 US grants and 21 published applications in this corpus.
Search patents in H01J- Granted patents
- 73
- Published applications
- 21
- Assignees
- 41
- Inventors
- 162
- Latest grant
- 17 Jan 2006
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 8 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 5 |
| 2003 | 1 | 4 |
| 2004 | 7 | 5 |
| 2005 | 4 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Inner shield and cathode ray tube including the same17 Jan 2006US 6,987,350 B2Samsung SDI.Co., Ltd.
- Cathode ray tube having magnetic shield with a bent portion27 Dec 2005US 6,979,943 B2Matsushita Electric Industrial Co., Ltd.
- Color cathode ray tube having DC magnetic field during degaussing process8 Nov 2005US 6,963,163 B2Matsushita Electric Industrial Co., Ltd.
- Cathode-ray tube, cathode-ray tube apparatus, image display apparatus, and coil unit8 Nov 2005US 6,963,181 B2Matsushita Electric Industrial Co., Ltd.
- Electron gun for cathode ray tube4 Oct 2005US 6,952,077 B2Samsung SDI.Co., Ltd.
- High Deflection Angle CRT Display22 Oct 2009US 2009/0262237 A1
- Device for Fixing an Internal Magnetic Screen to a Frame11 Oct 2007US 2007/0236128 A1Thomson Licensing
- Inner shield for slim cathode ray tubes17 Aug 2006US 2006/0181191 A1LG. Philips Displays Korea Co., Ltd.
- Internal magnetic shield for crt3 Nov 2005US 2005/0242699 A1
- Projection display apparatus and magnetic shield device3 Nov 2005US 2005/0242754 A1Kabushiki Kaisha Toshiba
Most cited
By later US patents
- Light-weight night vision device64US 5,365,057 ALitton Systems, Inc. · 1994
- Cathode-ray tube and method of producing the same25US 5,770,258 AMitsubishi Denki Kabushiki Kaisha · 1998
- Magnetic field cancellation circuit22US 5,066,891 ARaytheon Company · 1991
- 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